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73 Amateur Radio Today – Table of Contents – All Issues<\/span><\/p>\n\n\n\n

Return to 73 Amateur Radio Today Archive<\/a><\/d3><\/center>

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73 Ham Radio Today Issue October 1960<\/a>
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Audio Booster<\/h3> – A three transistor amplifier that hooks across the mike to give you more talk power for SSB or AM without distortion …… K5JKX\/6

Something New in FM<\/h3> – Using the new varicap as a FM modulator …… W7CSD 10

Bantam Converters<\/h3> – Two-tube VHF converters for 50-108-144-152-220 MHz bands …… W9DUT 12

Risky Hobby<\/h3> – How to fall off your tower for fun and profit …… K9AMD 16

Tubeless Electronic Key<\/h3> – Just uses some relays. Also tells how to convert your bug …… W1TUW 18

Digest of Surplus<\/h3> – Short lecture tour through your local surplus emporium …… W1MEG 20

Direct Reading Capacity Meter<\/h3> – Two transistors. You’ve got a lot of resistance if you can keep from building this gadget …… W6EAW 22

Gotta Patch?<\/h3> – Instructions for phone patching and avoiding trouble …… W6KNE 24

Three-way Power Supply<\/h3> – 6 12 120 volt supply using kit-available parts …… W3UZN 26

Shock<\/h3> – New facts on electric shock or what to do until rigor mortis sets in …… Bates 28

Propagation Charts<\/h3> – What bands what time to where probably …… K2IGY 30

Three Tubes Five Watts Six Meters<\/h3> – How to get on Six in a hurry …… K8NIC\/5 32

How To Be An Amateur<\/h3> – For adults only. Children under 16 not admitted …… W2ZGU 34

Testing the Heath GC-1A<\/h3> – Well well! A transisorized communications receiver! …… 73 Staff 38

Modulation Fundamentals<\/h3> – This is our big technical article for the month …… W0TKU 42
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73 Ham Radio Today Issue November 1960<\/a>
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Transistorized 10 Meter Converter<\/h3> – Not only that but it uses a printed circuit you can make …… W3BUL 9

Four Band Crystal Converter<\/h3> – 20-15-10-6 meters using the new International Crystal converters …… 3UZN 12

FM VFO Exciter<\/h3> – Butchered BC-459 for 6 and 2 meter FM or NFM operation …… W1TUW 14

Mobile Power<\/h3> – How to put some beef into that mobile signal …… K5JKX\/6 16

Cardboard Chassis<\/h3> – Building on the kitchen table… How easy can we make it? …… K5JKX\/6 18

Stop That Noise<\/h3> – This is our technical article of the month: Noise Clipping etc …… 73 Staff 20

Measure Your Modulation<\/h3> – Overlay for your ‘scope to get modulation percentage …… K5JKX\/6 25

Some Hard Facts About Echo<\/h3> – The Moon makes a better reflector …… W6MMU 26

Improving Performance of the Communicator III<\/h3> – A new front-end tube that improves the S\/n considerably …… W1MCA 28

VHF Tri-mode Receiver<\/h3> – AM-cW-sSB tuner to go with last month’s Bantam Converters …… W9DUT 30

Toroid Coils<\/h3> – Quickie think article plus an idea on mounting ’em …… Paffenberg 37

$5 Frequency Counter<\/h3> – Two transistors and it reads 0-300 Hz 1 kHz 3 kHz 10 kHz 30 kHz …… K5JKX\/6& 38

Wabbit Ears<\/h3> – 20 meter dipole compacted slightly …… W6EHY 41

Propagation Forecast<\/h3> – What bands what time to where …Probably …… K2IGY 42

Equipment Manuals<\/h3> – Special article for manufacturers …… K2DHA 44

Finding True North<\/h3> – How to zero in your beam on the North Star …… W5LFM 49\n
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73 Ham Radio Today Issue December 1960<\/a>
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Transistorized 220 MHz Converter<\/h3> – Crystal controlled too …… W3HIX 8

RF Sniffer<\/h3> – Snooper sensitive RF detector which you will build …… K5JKX\/6 11

SSB Dynamic Demonstrator<\/h3> – Teaching SSB calls for some tricky stratagems …… W2UQB 12

Capacity Meter<\/h3> – Two ranges : 0-40 pF (resolves 1 pF) and 0-900 pF …… K8ERV 14

Station Control System<\/h3> – Even if you don’t build this one it will give you ideas …… W1TUW 16

The Multivibrator in VOX Circuitry<\/h3> – Technical article ending up with a corker of a VOX circuit …… Paffenberg 18

The Fine Art of Transistorizing<\/h3> – Changing your tube circuits to transistors …… K5JKX\/6 22

Simplify Your Log Keeping<\/h3> – Just an idea which you probably won’t like anyway …… Staff 25

Perfect Squelch<\/h3> – Our big technical article for the month… all about squelching …… Staff 26

Low-Noise Two Meter Converter<\/h3> – The newest the latest the hottest 417A converter yet …… ZL1AAX 32

Surplus Frequency Standard<\/h3> – Simple conversion or the VO-4 oscillator. You’ll like it …… Paffenberg 40

Simple Phone Patch Herb Brier<\/h3> – This one is pretty simple and effective. Next month a simpler one …… W9EGQ 42

New Tube Base Coil Forms<\/h3> – OC3W 5R4WGA. etc bases make splendid coil forms …… Paffenberg 44

Propagation Forecast<\/h3> – What bands what time to where… probably …… K2IGY 50
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73 Ham Radio Today Issue January 1961<\/a>
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Nuvistor Converters for Six and Two<\/h3> – 417A performance without 417A cost …… K8ERV 8

Down With Drift<\/h3> – Step-by-step stabilization of your receiver …… K5JKX\/6 12

6N2 Completed<\/h3> – Eico Heath and Johnson kits add up to 100 watts on Six and Two …… W3UZN 14

1296 MHz<\/h3> – Secret confessions of an UHF addict …… K2TKN 16

Goblin Patrol<\/h3> – Hams team up with cops to louse up Halloween for the kids …… W8UCY 18

Lost in a Tunnel<\/h3> – Pioneering frustrations of a diode speilunker …… K5JKX\/6 20

8 MHz Crystal Modification Kit<\/h3> – For thee who art long on 8 MHz rocks …… W3UZN 24

Transistorized Frequency Standard<\/h3> – Think of all the advantages …… W7OE 26

Suction or Whoosh<\/h3> – One is better but you’ll never know which unless you read the article …… W6JAT 28

Transistorized Communications Receiver<\/h3> – Just to show you what you can do if you really want to …… OZ7BQ 30

Vertical Radiator<\/h3> – To warm the ether not your shack …… W7OE 36

AM Detectors<\/h3> – Our big technical article for the month. Guaranteed both interesting and informative …… Staff 40

Switch from the T-17<\/h3> – The fine art of surplus scavenging …… Paffenberg 51

Propagation Forecast<\/h3> – What bands what time to where probably …… K2IGY 52

Spot Frequency Operation of VHF Nets<\/h3> – How to herd everybody on to the same channel …… W0HKF 54

See-saw Bleeder<\/h3> – Save power and get better regulation this away …… KV4CI 56
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73 Ham Radio Today Issue February 1961<\/a>
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Rolling Your Own<\/h3> – We’re determined that you’re going to build something …… K5JKX\/6 11

Amplifier for Varicap Modulator<\/h3> – More for gain for the modulator in our October issue …… W7CSD 16

World’s Simplest Phone Patch<\/h3> – Average construction time: five minutes …… K5JKX\/6 17

Two Meter Pip-squeak<\/h3> – Complete phone rig using only three 6CX8’s …… K6BP 18

Squawk<\/h3> – Guaranteed Houser. We should needle Ken into writing more like this …… W7IDF 20

Six Meter Converter<\/h3> – For the car… Operates with only 12 volts on the plates …… K5JKX\/6 22

Heath Phone Patch<\/h3> – Heath does it again. Works fine for SSB also. Hey Heath where’s the ads? …… K2DHA 24

Life Insurance for Transistors<\/h3> – These little rascals are delicate so watch your step …… K6EAW 26

Beat Generation<\/h3> – Big technical article on SSB and CW detectors …… Staff 28

Updating the Absorption Wavemeter<\/h3> – Real handy piece of test gear and easy to knock together …… W3FQJ 34

Interference Chaser<\/h3> – Easy way of getting audio break-thru out of TV sets and things …… K5JKX\/6 35

Getting the Most Out of Your Mobile Whip<\/h3> – How to make the best of a miserable situation: a short vertical antenna …… W4API 36

How Modern is the VFO?<\/h3> – Not very …… W7OE 38

EICO Grid Dip Oscillator<\/h3> – Our Associate Editor is still building up kits and liking ’em …… W3UZN 42

Power for the Pro<\/h3> – Super-pro owners take note …… K5JKX\/6 44

Differential Switching<\/h3> – Using polar relays for sensitive switching- at different current levels …… Pafenberg 46

Propagation Charts<\/h3> – What time to where on what bands… Probably …… K2IGY 56
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73 Ham Radio Today Issue March 1961<\/a>
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Translating Technical Journals<\/h3> – You’ll read this one to anyone who will listen …… K5JKX\/6 9

Transistorized Grid Dip Oscillator<\/h3> – Severing the AC umbilical cord with a transistor …… W3KET 10

Curing Ignition Interference<\/h3> – Step-by-step assassination of the noisy car gremlins …… W8UCG 13

Superregenrative Receivers<\/h3> – Ten rules for getting good results from a super-regen illustrated …… W5WGF 14

Decreasing Debugging Time<\/h3> – How to get things back east when they go west.. In a hurry …… K5JKX\/6 16

Top Loaded Whip<\/h3> – Why not make your own mobile whip? …… W2IHW 18

CW Transmission with Teletype Equipment<\/h3> – Simple conversion of RTTY or that hated CW identification by TT tape …… Pafenberg 20

All Band Antenna<\/h3> – You’ve been waiting for someone to adapt that Log Periodic Antenna …… K5JKX\/6 22

Double Your Power Supply Voltage<\/h3> – Not difficult with a couple silicon rectifiers …… W4API 24

Impedances of Surplus Equipment<\/h3> – Input and output impedances for most popular surplus gear ….. Pafenberg 25

Patch Patch<\/h3> – Quick method of hooking your phone patch in and out of the telephone line …… K2DHA 26

432 MHz Transistorized Converter<\/h3> – Good night! How high will they go with transistors? Crystal controlled too …… W3HIX 27

Two Meter Transmitter<\/h3> – Slight modification of the 6M rig from October issue of 73 …… K8NIC\/5 29

Squawk Box<\/h3> – Transistorized loudspeaker amplifier …… K5JKX\/6 30

Up Front<\/h3> – Rather thorough look at receiver front ends our big technical article …… Staff 32

Don’t Bug Me Dad<\/h3> – Our cover artist also writes. Instructions for new bug owners …… W6NKE 38

Varicap Tuning Device<\/h3> – Helps the blind ham to tune up his rig… Or anyone else for that matter …… W7CSD 42

Noise Clipper Semiconductor Style<\/h3> – Tiny clipper for insertion in car radios including transistor sets …… W2IHW 43

Working 80 Meter Phone DX<\/h3> – WAC in one night when you know where to listen …… W1FRR 44

DC Transistorized Meter Amplifier<\/h3> – Get amazing sensitivity out of normal meters with this amplifier …… K6EAW 46

Motorola Test Set<\/h3> – Ham-banding the old Motorola mobile transceivers is popular this helps …… W9HKA 48

Propagation Charts for March<\/h3> – What time to where when…probably …… K2IGY 54

Names Sines and Handles<\/h3> – Why “YB” calls himself “YB” …… W7OE 56

Save Learn Have Fun<\/h3> – It really is cheaper to build than buy …… W8VVD 62

How To File Your QSO’s<\/h3> – More ideas on card files for contacts …… OH2YV 68
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73 Ham Radio Today Issue April 1961<\/a>
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Six Meter Nuvistor Converter<\/h3> – Two 6CW4’s in cascade give a fearfully low noise figure …… K8BYN 9

Power Meter<\/h3> – Another valuable piece of test gear for the ham shack …… K8ERV 12

Surge Protection in Reverse<\/h3> – Protect your silicon diode power supply from destruction by shorting …… Pafenberg 13

Let’s Modulate Not Crepitate<\/h3> – Getting good modulation out of a Heising Modulator …… K4ZGM 14

A New Noise Limiter<\/h3> – Get out the soldering iron this one’ll go in your receiver …… K5JKX\/6 16

Calibration<\/h3> – Why we haven’t got it how much we need it. And how to get it …… W4WQT 18

Big Cannon<\/h3> – OK here’s a 20M kW amplifier now stop bothering us for that …… W6VVZ 20

Tennessee Indians<\/h3> – The public relations side of taming those Indians …… K2SJN 25

Half Wave Feedlines<\/h3> – One resonant feedline for several bands? Yup …… W9HOV 27

Automation<\/h3> – You didn’t think we’d pass up April without one feature did you? …… K5JKX\/6 28

Audio Boosting the Command Receivers<\/h3> – Turns out to be ridiculously simple once you know how …… K8HDR 30

Pick Up the Droop<\/h3> – Your beam been saggy lately? …… W7OE 31

40 Watt Transistor Modulator<\/h3> – Great for mobile rigs …… KL7DLC 32

Testing the Heath Two’er<\/h3> – You will no doubt be flabbergasted to find that Don likes the Two’er …… W3UZN 34

RF Noise Suppression<\/h3> – Technical treatise on how to exorcise the noise demons from your car …… K2TKN 38

432 MHz Transistorized Converter<\/h3> – Part 2 (ahem) the schematic diagram …… W3HIX 40

Take Your Pick<\/h3> – Big technical article: IF selectivity and the devious means used to gain it …… Staff 42

Propagation Charts for April<\/h3> – What time when to where on what bands… Probably …… K2IGY 54

Writing for 73<\/h3> – How to get rich beyond your wildest dreams …… Staff 56
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73 Ham Radio Today Issue May 1961<\/a>
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G4 Zed Smith<\/h3> – A tri-bander without loading coils or traps can be tuned from the shack! …… W8VVD 9

Feedline Economy<\/h3> – Open-wire line just may become popular again after you read this one …… W9HOV 18

Propagation Special Feature<\/h3> – Taking a look at sunspot numbers with an eye to predictions …… K2IGY 20

Testing the KT-200 Receiver<\/h3> – Next month we have some of Bill Orr’s ideas for modifying this receiver …… K2DHA 22

Ham Calendar<\/h3> – Just what we’ve been needing. Should go nicely with a 35 hour clock …… K4YNO 25

Build a Vary-volt<\/h3> – A piece of test equipment that is worth its weight in something or other …… W2WYM 26

Moonstruck<\/h3> – Eyewitness account …… W8GUE\/6 28

Moon Chart<\/h3> – How to get radio signals back from the moon reduced to a chart …… K2TKN 31

Sideband Exciter<\/h3> – What with Turret construction and a simple circuit you may try this one …… W2NQS 32

Testing the Knight GDO<\/h3> – Porsche-pushing ham tests Knight GDO likes it tells all …… W2OKU 35

Propagation Charts<\/h3> – What time to where when on what bands… Probably …… K2IGY 36

Custom Resistors<\/h3> – How to move precision resistors to the value you need …… Pafenberg 38

AC Calibration of Your VOM<\/h3> – We’ll be giving you more and more on precision and calibration …… Bentley 40

Ohms by the Yard<\/h3> – This ties in with the precision resistors on page 38 …… K5JKX\/6 41

Blowers<\/h3> – What size blower you need to keep a cool rig …… W3KET 42

How Low The Fi<\/h3> – Our technical article: examining the audio stages of your receiver …… Staff 44
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73 Ham Radio Today Issue June 1961<\/a>
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Abe Lincoln<\/h3> – Two meter antenna for mobile or fixed. Looks awful works great! …… K2TKN 8

75M Transistorized Converter<\/h3> – Nice little one evening construction project …… WA6DZL 12

Precision Capacity Measuring<\/h3> – Right down to a fraction of a pF …… K6BJ 14

Propagation Part 2<\/h3> – When the sunspot null will really come and what it will be like …… K2IGY 16

73 Tests the M-100 Modulator<\/h3> – Just how good is that gate modulator put out by Electrotone? …… W4API 20

AM Modulation Monitor<\/h3> – A bit complicated but great for perfectionists …… W5SUC 24

Modifying the KT-200 Receiver<\/h3> – Bill claims this is a real good deal with these few changes …… W6SAI 30

Pandapting Adaptor Part 1<\/h3> – Moderately simple device connects your receiver to your ‘scope …… W6AOI 33

Automatic Drive Control<\/h3> – Transistor device keeps you from over modulation. Clever …… W5IUR 38

Dear Sir<\/h3> – On writing to manufacturers about your miseries …… K2DHA 39

FCC Notice<\/h3> – Thought you’d get a kick out of this bit of antiquity …… W8ONL 41

Do-it-Yourself IBM<\/h3> – Punch a few holes and get some real mileage out of a card file …… K5JKX\/6 44

Power House Pros<\/h3> – Part 1 all about power supplies …… Staff 51

Propagation Chart<\/h3> – DX men please note that this is the most accurate forecast in print …… K2IGY 54

The DX Hunter<\/h3> – Do’s and don’ts for DX hunting …… W6NKE 56
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73 Ham Radio Today Issue July 1961<\/a>
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A Tinker-toy for Two<\/h3> – Two meter antennas made out of aluminum tubing and a Tinker-toy set …… K8LFI 8

Ready-made Emergency Antenna<\/h3> – New improved type mobile antenna. Really works out! …… W7CSD 12

Two Meter Line Amplifier<\/h3> – Nuvistor pre-amplifier -for hottening up your two meter converter …… Bullock 14

Amplitude Modulation Systems<\/h3> – Review of AM systems with special reference to an oldie you’ll like …… W7CSD 18

Globular Calculations<\/h3> – How to find out how far it is from anywhere to a anywhere great circle route …… K5RPB 26

An S-meter for Your Sixer<\/h3> – Or your Tenner… Or your Tower. What? You don’t have one? Heath advertises …… K5VMC 28

VLF – Very Low Frequencies<\/h3> – A converter for the 10-100 kHz band …… W3QA 29

Little NIC Six Meter Converter<\/h3> – Quite wee transistorized converter. You’ll like. Real quick project for you …… K8NIC\/5 31

Panadapting Adaptor Part 1!<\/h3> – Construction and alignment details …… W6AOI 33

Plate Modulate Your DX-40<\/h3> – How to hook in an external modulator or more output from the DX-40 …… K6UGT 39

Socket for the 4-1000A<\/h3> – The tubes are available surplus but the sockets ouch! Here’s an answer …… W4API 41

Frequency Measurement<\/h3> – Measuring frequency with simple equipment …… Henry 42

From My Side of the Counter<\/h3> – Confession from the heart of Radio Row in New York City …… W2BNW 44

Transistor Biasing Simplified<\/h3> – The problem… The solution …… K6EAW 45

Powerhouse Pros Part 2<\/h3> – Designing a power supply instead of throwing it together …… Staff 48

Propagation Chart<\/h3> – What bands when to where …… K2IGY 56

Band Edge Marker<\/h3> – 3.5 MHz oscillator gives band edge marker for all ham hands …… K1NFE 58

Transformer Action Demonstrator<\/h3> – Very handy for schools and theory classes ……W8KTJ 64
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73 Ham Radio Today Issue August 1961<\/a>
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Frequency Deviation Meter<\/h3> – Another little garget to build from the brain of one of the top hams of all time …… K6BJ 6

Noise Limiter<\/h3> – For the car. Transistorized printed circuited and the board is available …… W3BUL 8

SSB vs. AM<\/h3> – Year-by-year count of band occupancy by SSB and AM. (SSB is winning) …… K0AXY 12

Square Antenna<\/h3> – The Bi-square is easy to build and works out beautifully …… W8GUE\/6 14

The Drake Receiver<\/h3> – 73 rushes you info out the new Drake 2B. Amazing receiver as you will see …… Merritt 18

RTTY Converter<\/h3> – Transistorized printed circuit. Board available. Best yet …… W5SFT 24

Two Meter Nuvistor – Cascode Converter<\/h3> – If one Nuvistor is good why obviously two are better. Obviously …… WA2INM 28

Versatile Control Techniques<\/h3> – Using those concentric TV controls in your ham rigs and receivers …… W4WKM 32

Impedance Bridge<\/h3> – A whopper construction article. Details on building “professional” equipment …… K6CRT 33

Propagation Part 3<\/h3> – Antenna height and angle of radiation importance during the coming minimum …… K2IGY 42

Simple as A-b-c<\/h3> – Clarification (?) of the classes of amplifiers …… K5JKX\/6 44

The Romance of Dixie Dan<\/h3> – One of the better ham poems from our Renaissance man …… W6NKE 46

Propagation Charts for August<\/h3> – What time to where when on what bands… Even inside the US… maybe …… K2IGY 48

Four Kinds of Ham<\/h3> – A general discussion of stuff you’ve read before. The Golden Rule again …… K5JKX\/6 50

Mobile Power Converters<\/h3> – Transistor supply using filament transformers. Very clever… And cheap …… W2BXE 54

73 Tests the Finney 6 & 2 Meter Beam<\/h3> – Interesting invention. You’ll want one if you read. Beware …… W3UZN 56

New Look At Old Ideas About Antennas<\/h3> – The old timers really knew what they were doing… We can learn a lot …… K5JKX\/6

Hiss Sputter or Crash<\/h3> – Different types of noise and what to do about each of them …… K5JKX\/6 66

Portable kW Transistor XMTR<\/h3> – Newly released (early April) transistor makes shoe box kW simple …… K2PMM 72
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73 Ham Radio Today Issue September 1961<\/a>
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Silicon Rectifiers<\/h3> – How not to pop ’em a lesson for hams and engineers alike …… W1OOP 6

Tuning Bypass Condensers<\/h3> – How to make a bypass bypass at the VHF’s …… K5JKX\/6 8

Simplescope<\/h3> – Perchance the title may give this one away. You need one. Build it …… W0OPA 10

VFO Chirp vs. 6AU6<\/h3> – Several VFO’s use a 6AU6. Lousy choice try a 6AH6 instead and see …… K3KMO 20

Console<\/h3> – If you’re going to be obstinate enough not to buy an Alden Hambench then build this …… W9HKA 22

Class B Modulators<\/h3> – We’ll print anything …… WA2INM 28

Eye for Resonance<\/h3> – How confounded simple can a GDO get? This is how simple that’s how …… K6EAW 30

Break-in A la<\/i> Transwitch<\/h3> – Complete station control unit transistorized …… W7AXJ 33

Environmental Testing<\/h3> – Be nice to surplus gear it has been through a lot …… W2WYM 36

Band Edge Marker<\/h3> – A 3.5 MHz crystal calibrates your receiver on all ham bands …… WA2HZR 37

Tell The World<\/h3> – Ham radio needs publicity here’s how to go about it …… K5JKX\/6 39

Zero Shift Keying<\/h3> – A new idea presented first in 73. You’ll be hearing more about this …… K5JKX\/6 42

Cross-polarized Beam<\/h3> – A new approach to diversity transmission and reception …… K6CT 48

Crystal Oscillators<\/h3> – This is the Big Technical article. You’ll find interesting …… Staff 50

Propagation Charts<\/h3> …… K2IGY 64

Why a 73 Page Magazine Is Impossible<\/h3> – or: further developments of the kW Transistor Transmitter …… K2PMM 72
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73 Ham Radio Today Issue October 1961<\/a>
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Six Meter Linear Amplifier<\/h3> – 90 watts AM 360 watts PEP SSB 2-1\/2 watts drive to pair 7378s …… W2LPC 6

Simple High Stability VFO<\/h3> – 5763 osc. 5763 buffer. Colpitts circuit …… W2RWJ 14

73 Tests the Central 200V<\/h3> – It works …… Staff 18

CQ de 73<\/h3> – Converting the ARA-26 surplus keyer for ham work. Inexpensive and lots of fun …… W2WKM 22

Like New Mixer Circuit<\/h3> – New way to improve sensitivity and stability of your receiver …… Staff 32

Two Meters the Easy Way<\/h3> – The MRT-90 packset available surplus makes a terrific two meter transceiver …… W2WKM 36

Useful Accessory for the Shack<\/h3> – You can’t get along without this wavemeter\/field strength meter\/monitor …… W2WXH\/6 38

Inexpensive Vertical<\/h3> – Easy to put up tunes 80-40-15 meters and works out fine …… W6NKE 40

Dual Diversity Beam<\/h3> – This we predict will be a very popular DX’ing antenna …… K6CT 42

VFO Circuits<\/h3> – Good and bad features of all known circuits. Our big technical article …… Staff 46

Obtaining That DX License<\/h3> – Gus divulges his secret tactics which will soon give him a reverse DXCC …… W4BPD 58

Sequential Electronic Switch<\/h3> – Key VFO and final screens in sequence for clickless spark-free keying …… KV4CI 62

Propagation Charts<\/h3> – What time to where on what band probably. For world and U.S. short path …… K2IGY 64

Send-receive Ground Switch<\/h3> – Antenna switch for simple ham stations. Also keeps lightning out …… Pyle 66

Maximum Utilization from Variacs<\/h3> – Very useful devices. They’re available surplus if you hunt around. Even new they’re worth it …… W4CAG 72

Construction Do’s and Don’ts<\/h3> – Rules of the game. Read please …… K5JKX\/6 76

Emcar 6<\/h3> – Why you should get a Porsche to go with your mobile rig …… W3JXT 82

Little Thief<\/h3> – Li’l one tube CW rig powered from your receiver …… W3FQJ 84
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73 Ham Radio Today Issue November 1961<\/a>
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Linear for Sunspot Lows<\/h3> – Do-it-yourself F2 layer. A kilowatt six meter linear for SSB …… K6QQN & W6QMN 6

Transistor Mike Pre-amplifier<\/h3> – Outboard pre-amp to make up for audio deficiencies of your rig …… K6PZT 10

Transistorized RTTY Audio Oscillator<\/h3> – Printed circuit generates mark and space tones for RTTY …… W5SFT 12

Have You Met These Characters<\/h3> – TVI brings out some remarkable characters …… K3HNP 15

TV Tuner Receiver<\/h3> – The standard coil tuner makes a wonderful basis for a fine inexpensive homemade receiver …… W0RQF 16

Solid Power<\/h3> – What diodes to use for what voltage power supply …… K5JKX\/6 20

Phasing For Audio Selectivity<\/h3> – Simple gadget makes the 80M Novice band sound almost vacant …… K5JKX\/6 24

Quick and Simple Mobile Rig<\/h3> – CB is good for something! Convert those CB rigs to 6-10-15-20M featured here …… K5JKX\/6 30

Single-sideband Transceiver<\/h3> – All band 200 watt PEP. VOX etc. Everything you could want in a transceiver …… W6BUV 33

A Quad for Six<\/h3> – The quad works excellently on six meters too and is awfully easy to build …… W3TBF\/0 48

Evolution of Antennas<\/h3> – Short history of the early ideas in antenna design and how they grew …… W7OE 50

Propagation Charts for November<\/h3> – What time to where when on what bands… Maybe. Including short-haul inter-u.S. …… K2IGY 58

Two Uses for a Birdie<\/h3> – 1) Super accurate alignment of IFs. 2) Substitute for xtal standard for bandsetting …… K5JKX\/6 62

Horn Antennas<\/h3> – 1296 MHz requires an entirely different approach to antennas and feedlines …… T12NA 64

Audio Hither & Thither<\/h3> – Connecting the tape recorder and phone patch into your rig and receiver …… W3KBM 66

Rewinding Relays and Transformers<\/h3> – Rewinding for different voltages or in case of failure under the smoke test …… K0RRM 70

Surplus Utilization<\/h3> – General discussion: where to buy what to buy and how to best use it after you have it …… W4WKM 72

Testing the Gonset Communicator TV<\/h3> – Thorough rundown of this popular piece of gear …… W4API 80
\n
\n

73 Ham Radio Today Issue December 1961<\/a>
<\/h2>\n

Write Your Congressman<\/h3> – Making a pest out of yourself in a big way …… K7HDB 6

Ten Meter Midget Rig<\/h3> …… K5JKX\/6 8

Versatilizing Meters<\/h3> …… W2WYM 12

Regenative Detectors<\/h3> …… W5WGF 16

Another Two Meter Conversion<\/h3> – Conversion of the R-77\/aRC-3 Receiver provides continuous coverage from 100 to 156 mc without undue sacrifice of 2 meter bandspread …… W4WKM 22

Economical Custom Construction<\/h3> – Sturdy professional appearing custom equipment housing made from readily available materials using woodworking tools and techniques …… W4WKM 33

Avoid Precise Inaccuracy<\/h3> …… K5JKX\/6 37

Wayout Measurements<\/h3> – with close at hand equipment or you to can be standard …… Henry 41

On Soldering<\/h3> …… K3HNP 43

Two Meter Transceiver<\/h3> …… WA2INM 45

Capacitor Substitution Box<\/h3> …… W6AOI 50

Antenna<\/h3> – Simple inexpensive small quick …… K5JKX\/6 52

73 Tests the Knight R-55 Receiver<\/h3> …… W3UZN 58

RTTY in the United Kingdom<\/h3> …… G2UK 62

Propagation Charts<\/h3> …… K2IGY 64

73 Reviews the QX-535 Receiver<\/h3> …… K3KMO 66
\n
\n

73 Ham Radio Today Issue January 1962<\/a>
<\/h2>\n

Kilowatt Sideband Transceiver<\/h3> – Single band rig but amazingly compact …… W6JAT 8

Rotate That Tower<\/h3> – Instead of just the antenna …… K2LZF 14

73 Tests the Alco GDO<\/h3> – It works fine …… W4WKM 18

Rotors<\/h3> – Why TV rotors usually fail as beam twirlers …… K2TKN 20

Speakers for Command Sets<\/h3> – Making use of midget speakers for built-in sound on the ARC-5 receivers …… W4WKM 24

Chase That Dampness<\/h3> – Cure the number one blight to good radio equipment …… K4ZGM 28

Transistor Analyzer<\/h3> – Sure cure for unmarked transistors. Also checks out marked ones …… W6EUM 32

Simplified Break-in<\/h3> – As applied to the Heath Apache …… W4HBO\/2 36
\n
\n

73 Ham Radio Today Issue February 1962<\/a>
<\/h2>\n

V-loop Beam<\/h3> – Angie claims this thing works out. Looks easy to build give it a try …… W2NQS 8

Final Tanks<\/h3> – It’s about time someone did a through job on this subject. Technical article …… W6JAT 12

Converting 6 Volt Radios to 12 Volts<\/h3> – Basic conversion for car radios Motorola and link transceivers etc …… W4OHM 20

RX for the RTTY Bug<\/h3> – Nice TT converter complete with scope …… W0RQF 26

A Page from a Designer’s Notebook<\/h3> – Heising modulator design …… W5SUC 28

Sideband the Easy Way<\/h3> – Using the Wes Schum 10A exciter to drive almost anything you have on hand …… W9EGQ 30

The BC221 as an Accurate Audio Generator<\/h3> – How to generate precise audio frequencies with the 221 …… W0OKH 35

Which Way is Up?<\/h3> – Proof positive: we’ll print anything …… K6EAW 36

Silicon Rectifiers Continued<\/h3> – By the time we through you will be au expert on silicon diodes …… WA6QFD 38

73 Tests the LW-51<\/h3> – And makes L-w Labs very very happy …… W3UZN 42

Surplus Frequency Synthesizer<\/h3> – Incredible surplus buy for people who want to get their feet wet up to here in hamming …… W4WKM 44

Convert the URC-4<\/h3> – Cute little surplus Handi-talkie which hits 2M and 220 MHz …… K7ILP 50

Continuity and Power Transformer Checker<\/h3> – This little test set is really invaluable around the shack …… W5EHC 52

Modifications of the HE-35<\/h3> – No matter how good a rig is there is always some joker who wants to change it …… WA2INM 54

Dress it Up<\/h3> – It doesn’t take much extra effort to make it look nice. Here’s some ideas …… W4WKM 59

PNP-NPN CPO<\/h3> – We have to print a code practice oscillator now and then don’t we? …… K6EAW 62

32 on 2<\/h3> – Sneaky way to work two directions at once …… K8ERV 68

Propagation Charts<\/h3> – When the bands will open to where probably …… K2IGY 72

Economical Antenna Tower<\/h3> – 30 foot tilt-over which home-brews for about 0.012 kilobucks …… 74
\n
\n

73 Ham Radio Today Issue March 1962<\/a>
<\/h2>\n

Printed Circuit VFO<\/h3> – Extreme stability and simplicity of construction in this 50 MHz VFO may bug you to build …… W5UB 6

Regulated Bias Supply<\/h3> – Great for linears develops -20 to -120V @ 0-70 mA and presents only 6 ohms to grid …… W5IUR 12

Check Transistors with an Ohmmeter<\/h3> – Here is the simplest test for transistors yet and it’s safe and works …… W9QKC 14

Radar Detector<\/h3> – All you 2 500 MHz SWL’s (UNFL’s?) will appreciate this mobile receiver …… W6JAT 18

Ham TV Survey<\/h3> – Ham TV is sprouting up all over. This will bring you up to date on its spread ….. W0KYQ 22

Blind Fasteners Aid Construction<\/h3> – Using explosive rivets to hold things together …… W4WKM 24

Half-wave Transmission Line<\/h3> – This gets around a lot of your antenna problems …… W2KPE 26

50 MHz No Crossmodulation<\/h3> – Six meter converter designed for high signal density areas …… K6RNQ 28

Page from a Designer’s Notebook<\/h3> – Transistorized carbon mike pre-amps …… W5SUC 30

Brew or Buy?<\/h3> – Brew …… W4KOC 32

500 Watt Linear Amplifier<\/h3> – Not 811A’s again? Well er… They’re cheap! …… W0RQF 33

The Strings the Thing<\/h3> – We’ll print anything. What a kookie magazine! …… W7CSD 35

Nostalgic V-beam<\/h3> – Think piece …… W2RWJ 37

The Tiny Terminator<\/h3> – 50 ohm 20 watt dummy load built in Canada Dry Cola can. Too bad if this is not your brand …… K5JKX\/6 38

Old Vikings Never Die<\/h3> – Little hints to improve the Viking rigs. Might work on the DX-100 too …… W4AWM 40

73 Tests the Knight T-60 Transmitter<\/h3> – Here’s another rig we can recommend. 80-6 meters 60 watts CW-aM …… W4WKM 42

Antenna Protection and Switching Unit<\/h3> – Built outdoors where it should be. Keeps lightening out …… W5EHC 46

Is Marconi Like Spaghetti Daddy?<\/h3> – Saga of the visiting amateurs as reported from England …… Margolis 50

Faithful Long-lasting Signal Booster<\/h3> – It also works well and is simple to build …… W9ZDN 52

Evolution of the Bug<\/h3> – Historical aspects of this oft used little mustered device …… W3WRE 54

Cure that Angry Band<\/h3> – Audio’s selectivity with the FL-8 surplus audio filter …… W4THU 57

BCI in Your QSO?<\/h3>– Keeping BC stations out of your receiver …… K2DHA 58

73 Tests the Viking Ranger II<\/h3> – Johnsen has nicely updated their most popular rig …… W4API 61

High-level Mixer<\/h3> – You can mix the full output of your exciter to any band you desire …… W5EHC 66

Zero-beatnick<\/h3> – More fun with transistors …… K6BIJ 64

Modulation<\/h3> – Our big technical article… This will make you an expert …… Staff 70

Propagation Charts<\/h3> …… K2IGY 74
\n
\n

73 Ham Radio Today Issue April 1962<\/a>
<\/h2>\n

Six Meter SSB Exciter\/transmitter<\/h3> – Since sideband is going to be the big thing on 6 you’d better start soldering …… W5JSN\/k8NIC 6

Field Strength Meter for Ten and Six<\/h3> – Using a midget loaded whip to improve the sensitivity of your F.S.M …… W3YZC 9

Forty Meter ZL Special<\/h3> – As the sunspots go so go the higher bands. Try this 40M amplifier …… W4AXE 10

73 Tests the Poly-comm 62B<\/h3> – Pollytronics has really done it: Six and two in one li’l package …… W4WKM 12

Ham Radio in Finland<\/h3> – On the spot reporting …… OH2YV 18

Dot Maker<\/h3> – Great for people who are short on dots …… W6VAT 20

An Accurate S-meter<\/h3> – “You’re 80 over nine here OM!” …… K5JKX\/6 22

LCU’S Michigan Long Wire<\/h3> – Interesting 80M antenna. Somebody’s always thinking up something new …… W8LCU 24

Station Control Unit<\/h3> – Contains speaker transistorized electronic key break-in circuit etc …… W7AXJ 28

Universal Antenna<\/h3> – Works on all bands from 160M to 10M and in between too …… W6AOI 30

One Tube Vox<\/h3> – Now you too can learn to talk steadily to keep the rig on the air …… K8AOE 37

Quartz Crystal Checking<\/h3> – Wee gadget to check frequency and activity of your quartz chips …… W0CGA 38

Before the Breadboard<\/h3> – Basics of circuit design simplified …… Staff 40

Transistorized Cathode Modulator<\/h3> – Kilowatt transistorized modulator. Let us know if it works …… K2STV 46

AGC for the Swan Transceiver<\/h3> – A small improvement for this terrific little SSB transceiver …… K6SHC 51

160 Meter Mickey Mouse<\/h3> – 18 watt for for 160M. Let’s get more activity up there. And more frequencies …… K9PAL 52

Improve Weak Signal RTTY Reception<\/h3> – We may eventually run a new TT converter every month. This one looks good …… W7CJB 54

Pre-amp Curve Shaping<\/h3> – Getting a lot more punch out of the crystal mike pre-amp …… W5SOT 56

BC453 Conversion<\/h3> – Makes a fine and inexpensive signal slicer …… K6JHJ 58

Linear Scope Monitor<\/h3> – Linears are hard to adjust sometimes this sure helps …… W0MWJ 62

FM to AM<\/h3> – Quick conversion for surplus FM gear …… W4WKM 64

The Band Warmer<\/h3> – Another good idea for use of the KY-65\/aRA-26 surplus keyer unit …… W0RQF 66

Propagation Charts<\/h3> …… K2IGY 68

Precision Measurement for the Amateur<\/h3> – Hints of getting lab gear and reconditioning it …… W4WKM 72

W2SKE\/mM (Mobile Motel)<\/h3> – Hard learned ideas on fast setting up for travelers …… W2SKE 78

73 Tests the Heathkit IM-10 VTVM<\/h3> – Nice …… W3UZN 81
\n
\n

73 Ham Radio Today Issue May 1962<\/a>
<\/h2>\n

6M Double-sideband AM Transmitter<\/h3> – Uses circuit board. Whole bunch of fellows are getting on with this simple rig …… K8AOE K8MSB 10

Two’er Modifications<\/h3> – AC\/dC power supply new osc. circuit. Applicable to 10’er & 6’er too …… K2ORY 16

73 Tests the Telco 201 Converter<\/h3> – This six meter nuvistor converter is amazing …… WA2INM 18

ARC-5 VHF<\/h3> – Inexpensive surplus rig auto-tunes to 6 2 and 1-1\/4 meters …… WA2FHC 20

73 Tests the Clegg 99’er<\/h3> – Everybody probably already knows that this rig is great …… WA2HVK 22

7077 Two Meter Converter<\/h3> – 73 is first again with an application of this new ceramic tube …… WA6EWV 24

Four Layer Devices<\/h3> – Keeping you abreast of fast moving developments in solid state gadgets …… K4CPR 30

A New Broom<\/h3> – Sweep generator for aligning filters and stuff …… K6JHJ 32

All Band Linear<\/h3> – Using four EL-34’s (those hi-fi tubes) 300 watts …… W9CJS 34

FSK Without Relays<\/h3> – Diode keying unit replaces polar relays for the RTTY group …… W5QJR 38

Do Hams Have Fun?<\/h3> – You’ll have fun with this one …… W4WQT 40

Receiver Prices<\/h3> – Original prices and dates on old receivers. Nostalgia Inflation! …… W0HKF 46

The 85 B14 Receiver<\/h3> – This receiver should keep you out of trouble for this month …… Bernard 50

Vacuum Capacitor Traps<\/h3> – Surplus vacuum condenser units for multi-band traps …… W4API 60

Budget VTVM<\/h3> – Easy to build gadget. Get out the soldering iron …… W7INX 62

Notes on Silicon Rectifiers<\/h3> – We’ll have to start a silicon rectifier department soon …… K5IPY 66

73 Tests the Heath HA-10 Linear<\/h3> – Another Heath rig proves out FB …… K3KMO 68

Complete Fire Insurance<\/h3> – Or how to keep your transistors out of the garbage …… W6VAT 70

73 Tests the Knight RF Z Bridge and Pocket VOM<\/h3> – For $5.85 and $9.95 you sure don’t go wrong …… WA2INM 74

73 Tests the Hallicrafters HT-40K<\/h3> – New kit from Hallicrafters …… W3UZN 76

Propagation Charts<\/h3> – What time to where when on what band… Probably …… K2IGY 78

RF Q Multiplier<\/h3> – More fun with the 2N169A …… K6BIJ 80

High Power Antenna Switching Unit<\/h3> – Using one of the ART-13 antenna switching units to good effect …… W4WKM 82

A Cheap Simple Plate Modulator<\/h3> – The surplus Command Set MD-7 is cheap and works fine …… WA2PGX 86

Keep Your Key from Crawling<\/h3> – Without bolting it to the table …… Pyle 89
\n
\n

73 Ham Radio Today Issue June 1962<\/a>
<\/h2>\n

Echo Deluxe<\/h3> – Two meter transmitter with a commercial appearance …… W9DUT 6

The Friendly Frequency<\/h3> – 52.525 MHz …… W9YCB 14

Six and Two Meter Nuvistor Pre-amplifiers<\/h3> – Pre-amplifiers are easier to build than converters …… K9ARA 16

Milliwatt RF Power Measurements<\/h3> – For those low power transistor rigs and transceivers …… K4UWX 18

Noise Limiter for the NC-300<\/h3> – Rate-of-change type limiter …… W8IQN 20

Six Meter Transistor Converter<\/h3> – Runs directly from your 12 volt system …… W3HIX 22

Simple Tuner for Long Waves<\/h3> – Explore these long-forgotten frequencies …… K0VQY 24

A kW\/sWR Power Meter<\/h3> – You can leave it in the line if you want …… W6VAT 26

Selectivity Plus<\/h3> – Putting a mechanical filter in the homebrew receiver …… W9OFD 30

Overload Relay<\/h3> – Beats fuses all hollow …… W0OPA 34

73 Cent Noise Clipper<\/h3> – A good price. Connects between receiver and headphones …… K0WML 36

Tape Recorder on SSB<\/h3> – Use tape loops for those long long CQ’s …… KZ5SW 38

Phase Inversion<\/h3> – Hi-fi on the hambands? Forsooth! …… W4JKL 40

Electronic Keyer<\/h3> – Cheap simple and effective. Get cracking! …… K3KMO 42

Pop Box<\/h3> – Now you can generate your own ignition interference. Make friends with the neighbors …… K8ERV 44

Selected Circuits<\/h3> – Looking at the RF Communications Assoc. sideband transceiver …… W4WKM 46

Diathermy<\/h3> – If it isn’t too late you might grab any available units …… W4WKM 50

160 Meter Converter<\/h3> – Lots doing down on 160 but maybe your receiver doesn’t cover the band …… W1OOP 52

Crystal Control for the DSB-100<\/h3> – For nets Novices. etc …… W2BZN 54

Break-in CW with the 20-a<\/h3> – Or any other imitation of the 20-a …… K2ISP 58

73 Tests the Knight Kit Code Practice Oscillator<\/h3> – Inexpensive and works fine …… WA2INM 56

Seneca Modulation and Keying<\/h3> – Couple of modifications for Seneca owners …… WA2GCF 60

How is Your Ham Image?<\/h3> – Martin makes some good points …… K7NZA 62

Calibrate Your Antenna System<\/h3> – Getting some mileage out of your SWR meter …… K2DHA 64

The Perfect Setup<\/h3> – Some improvements on overall station setup …… K0OFB\/2 74

A Review of the NC-190 and the NC-155<\/h3> – They’re OK …… Staff 69

Propagation Charts<\/h3> – Goodbye ten meters …… K2IGY 78

A Crystal Diode Noise Generator<\/h3> – Exceptionally handy for tuning up receivers. Builds in minutes …… W5TEV 80

Receivership<\/h3> – Ray has had his problems …… W2TAM 82

Values Etc.<\/h3> – Some basic discussion on parts values. Read …… K5JKX 86
\n
\n

73 Ham Radio Today Issue July 1962<\/a>
<\/h2>\n

The 420 MHz Band<\/h3> – Inside dope on this interesting band by real expert …… W4HHK 6

Six Meter Nuvistor Converter<\/h3> – Designed to plug in Drake receiver but will work with anything …… K8NIC\/5 12

VHF Construction<\/h3> – Heed well this article and you may save yourself a lot of misery …… WA2INM 14

The Eico 720 on Six Meters<\/h3> – You just add a separate pi-net coupler and there you are …… WA2KTJ 18

Finding True North<\/h3> – Handy if you are lost in the woods …… KH6BW 20

Modifying the HE-35<\/h3> – Revisited …… WA2INM 22

All Band Nuvistor Pre-selector<\/h3> – This little gadget makes quite a difference …… K8AOE 22

Transistorize that Meter<\/h3> – Making VTVMs out of those VOMs …… Henry 26

Rambunctious Radiations<\/h3> – It’s the location that counts not the antenna …… W4KOC 30

The Windom<\/h3> – Resurrected and placed carefully on a pedestal …… W4WXY 34

The Whistler<\/h3> – Or how to use an island as an antenna …… W2SKE 38

Power Booster<\/h3> – Replace that 6146 with a 6DQ5 and watch the signal increase …… K5JKX 42

The Engineer and the Transistor Radio<\/h3> – Humor …… Rodgers 46

Vermin Traps and Dragon Eggs<\/h3> – How to keep the bugs out when you are building that rig …… W2TBZ 50

Selectivity Plus<\/h3> – 105 Hz selectivity with a simple audio filter …… W6EUM 58

Propagation Charts<\/h3> – What time to where in all probability …… K2IGY 62

An Old Friend in a New Suit<\/h3> – The ARC-5 rides again …… W7CSD 64

Dear Friend<\/h3> – Keeping those Indians on the reservation …… K0OFB 66
\n
\n

73 Ham Radio Today Issue August 1962<\/a>
<\/h2>\n

Coaxial Line UHF Pre-amp<\/h3> – 420 MHz Nuvtstor pre-amplifier pretty important at these frequencies …… W9SEK 6

Improving the CC50<\/h3> – Blow the dust off and bring it up to date …… WA2INM 7

VHF with RDR<\/h3> – Navy surplus conversion. Covers 220 MHz band rather well …… W2VCG W2TAM 8

Six Meter Coaxial Antenna<\/h3> – Not for DX’ing but it is simple inexpensive and omnidirectional …… W6KVO 12

The UNI<\/h3> – Code practice oscillator …… W2VSP 14

More on Crystal Oscillators<\/h3> – Part 2 of the crystal oscillator article in September 1961 …… W6LWE 18

Of RTTY and Transistors<\/h3> – Attention all RTTY bugs …… W3TUZ 22

Crystal Ball<\/h3> – Measures crystal activity overtone activity frequency spotting etc …… K5JKX 28

Quad Mode Monitor<\/h3> – An ultimate sort of receiver …… W9DUT 31

Mobile Scope<\/h3> – Why not? …… K9DYS 36

More Fun from a Receiver<\/h3> – General coveraging ham-band-only receivers …… W2LLZ 38

TT-180 Five-bander<\/h3> – Transmitter …… W2RWJ 42

Instantaneous Dissipator Tube<\/h3> – Medium power final amplifier with unusual power supply and interesting voltage regulator …… W7CSD 49

Management Terminology<\/h3> – Ha …… W4WKM 54

CW Man’s Monitor<\/h3> – One 6C4 and a simple circuit …… W6EUM 56

T-60 Modifications<\/h3> – Break-in and push-to-talk for the Knight T-60 …… W4WKM 58

Panel Markings<\/h3> – Professionalizing homebrew gear …… K5JKX 62

Potato Face<\/h3> – Fiction …… Margolis 66

Mounting the BC-625<\/h3> – The 522 will never die …… WA5MLI 74

Surplus Coaxial Switch<\/h3> – Motor driven …… W4WKM 76
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73 Ham Radio Today Issue September 1962<\/a>
<\/h2>\n

Synchronous Detection<\/h3> – A breakthrough article reading signals 40 dB down in the noise …… K2TKN 6

73 Tests the Maverick Filter<\/h3> – Really picks off those six meter Indians …… WA2INM 10

What’s a Vidicon?<\/h3> – It is the amateur’s answer to live TV …… W2RWJ 12

Twin-cavity Two Meter Filter<\/h3> – It’s what’s up front that counts. A thinking man’s filter …… W3TUZ 18

Treasures From the Junk Yard<\/h3> – Car radios can be easily converted to 110 VAC …… W5VOH 22

Low-current Sliding Bias Modulator<\/h3> – 40 watt transistor modulator …… VE7QL 24

How’s My What?<\/h3> – Ken has a good answer for our June article on “How’s Your Ham Image?” …… W7IDF 28

Western Ham<\/h3> – Sense of humor test. 10 points if tears come to your eyes …… Rodgers 32

Improved Grounded Grid Operation<\/h3> – How to make your exciter load into the final about the same as into an antenna …… W6JAT 34

Rate-of-change Limiter Revisited<\/h3> – Using crystal diodes in the noise limiter from the April 1961 issue of 73 …… K5JKX 36

Quad Mode Monitor<\/h3> – Part 2. All band supermagnificent home built receiver …… W9DUT 42

73 Tests the Waters Universal Hybrid Coupler<\/h3> – A very compelling article. You’ll probably be coupling after you read this …… K2CM 54

Propagation Charts<\/h3> – W6AM complained that we left these out last month. Bet you never noticed …… K2IGY 60

Full Break-in Keying<\/h3> – You can get along without it but there is nothing like it …… W4MLE 64

The Frequency Response Argument<\/h3> – It’s what’s on top that counts. Keep the highs high …… W5SUC 68

Keying Surplus Transmitters<\/h3> – Getting some code speed out of old relay controlled surplus rigs …… W4WKM 76
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\n

73 Ham Radio Today Issue October 1962<\/a>
<\/h2>\n

VHF’ing with the Standard Coil Tuner<\/h3> – The cheapest really hot VHF converter yet published …… W4WKM 6

50 Watts on 50 MHz in 50 Seconds<\/h3> – Starting with the Heath DX-20 …… K9STH 10

20 Meter SSB Exciter<\/h3> – Completely transistorized to boot …… W5FRC 12

Four Layer Semi-conductors<\/h3> – Self completing automatic bug and other adventures of these new gadgets …… K8AOE 16

Improved Base Clipper<\/h3> – Eliminates all signals below a given adjustable amplitude …… Ives 20

This May be the Cause of Your Chirp<\/h3> – If you’ve been chirpy lately …… K7MSL 22

73 Tries the Irving Preverter<\/h3> – Two and six meter pre-amplifier. Boyoboyoboy! …… Staff 24

Tone Modulated Crystal Standard<\/h3> – Standardizes you up to 225 MHz and you don’t need a BFO either …… W9DUT 26

Transmitter Design<\/h3> – Big technical article for the month. Passably interesting or better …… K5JKX 30

Are You Being Lied To OM?<\/h3> – SWR bridges can be big liars …… KZ5SW 42

How to Scrounge a Deluxe Junkbox<\/h3> – Without having to work for a parts distributor …… K9AAI 44

The Local Net<\/h3> – 29 560 kHz.  Many other groups are using 52.525 MHz FM etc …… W4MLE 50

Modernizing the VF-1<\/h3> – Stabilizing this fleet-footed sprinter …… W2RHD 54

Mobile Whip<\/h3> – Har! …… Rodgers 60

Control Circuit for RTTY<\/h3> – Why use ten switches when one will do? Laziness that’s why …… W0PHY 62

Sirnplescope Part 2<\/h3> – Part 1 was back in September 1961. Great gadget …… K8AOE 63

V-beam<\/h3> – They stand up to the gales remarkably well …… G3BID 64

Metailic Rectifier Circuitry<\/h3> – Sort of a supplement to our article on power supplies in July ’61 …… K9MYZ 66

Imagination<\/h3> – A call for the trial of new ideas …… W4API 70

On the Use of the Amateur Bands<\/h3> – Someone is always proposing a new division of the bands …… KZ5SW 72

The AN\/aRC-2<\/h3> – Stop writing in for this conversion here it is …… W4WKM 82

FM Rejecting Stub<\/h3> – In case you don’t like FM birdies in your receiver …… W8HOA 90

Converting the BC-652<\/h3> – Inexpensive 2-6 MHz surplus receiver …… W1MEG 92
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\n

73 Ham Radio Today Issue November 1962<\/a>
<\/h2>\n

Solid State 1296 MHz Converter<\/h3> – Transistors on 1296? Good grief what next? Sensitive too! …… W3HIX 6

Deluxe Your Transceiver<\/h3> – The Lafayette HE-35A for example. S-meter spotting switch etc …… K6UGT 10

Junction Cheks<\/h3> – Quick way of making sure the junctions are still good onyour transistors …… K2OPI 16

The Continental Six<\/h3> – Six meters SSB with this low-cost high performance transmitting converter …… W1PYM 18

Build Your Own Mobile Mike<\/h3> – Transistorized mic pre-amplifier for more mobile punch …… K5JKX 20

73 Tests the Gonset 220 MHz Communicator<\/h3> – Commercial equipment comes to the 220 MHz band! …… W4API 24

In Defense of the Operator<\/h3> – A weak defense is better than no defense at all …… W0OBF\/2 26

Catch All<\/h3> – Ha ha …… Rodgers 28

Of RTTY and Filters<\/h3> – Book length feature …… W3TUZ 32

Premium Tube Replacement Guide<\/h3> – Equating all those four numbered tubes to better known tube numbers …… W4WKM 46

73 Tests the Lafayette Starflite<\/h3> – Inexpensive all-band rig. Eighty dollars ninety watts …… W1MEL 50

Complicating the Simplescope<\/h3> – Modifications and improvements of the Sept. 1961 article …… W0OPA 52

73 Tests the Heath IM-30<\/h3> – Transistor analyzer kit for $54.88 really does a good job …… W5SJN 58

Simple Squelch<\/h3> – Squelching that communications receiver used with a VHF converter …… K4UWX 60

Good Old Charlie Queen<\/h3> – Can this be fiction? …… W1QUE 64

Spotting Simplified<\/h3> – Getting those “spot” switches to really do the whole job …… W4MLE 66

Coax vs. Open Line<\/h3> – Coax doesn’t fare so well we’ll warn you …… W9HOV 67

Inverted Vee-beam<\/h3> – Works out like a bandit. Replace guy wires with a very effective antenna …… W8DLU 70

Choke Evaluator<\/h3> – Test equipment for the shack not the car …… Ives 72

Those Different Diodes<\/h3> – Big technical article. Rouser …… Staff 80

A Good Five Cent QSO<\/h3> – George fights a losing battle with the lids …… W4MLE 90
\n
\n

73 Ham Radio Today Issue December 1962<\/a>
<\/h2>\n

Two Meter VFO<\/h3> – Very stable and uses one tube. Dandy bandspread …… W6TKA 6

Modifying the Sixer<\/h3> – For a 50% power increase …… K4ZQQ 9

Modifying the HE-45<\/h3> – Improving the modulation & power output meter for this nice rig …… WA2INM 10

The Irving Hiverter 50<\/h3> – Six meter SSB converter tested at HQ by W1MEL. Works …… Staff 12

Alternators<\/h3> – With mobile SSB coming at us in a rush we will be needing these …… K8ERV 16

432 MHz Antenna Tuner<\/h3> – Pictorial article …… W1TQZ 18

Auto Analyzer<\/h3> – Not very hammy. Tachometer dwell angle meter battery VM temp. indicator …… Henry 20

Coaxial Baluns<\/h3> – Open wire is the lowest loss but how do we get from coax to open line? …… WA2INM 26

Selectivity Plus<\/h3> – The CW man sometimes goes to great lengths for selectivity …… W6EUM 28

The Heath HR-20<\/h3> – 73 tests the Heath mobile receiver …… W4WKM 36

AM Oscilloscope Patterns<\/h3> – You’ve been wondering what your scope was trying to tell you? …… W0OPA 44

Briefcase Twins<\/h3> – Complete portable CW station …… W2TBZ 50

The Heath Warrior<\/h3> – Full kilowatt linear amplifier by Heath …… W6EUM 60

Joe’s Other World<\/h3> – Fiction …… Margolis 66

Transistorized Squelch<\/h3> – Squelch is very handy and this circuit is so simple you have no excuse …… W1TUW 74

The Waters Q-Notch Filter<\/h3> – For the KWM and 758 Collins owners that want something better …… K2CM 74

The R-45\/aRR-7<\/h3> – This is practically a SX-28. Surplus conversion …… W5UOZ 86

Constant Voltage Power Supply<\/h3> – A real gem is available in some of those old TV sets …… W4WKM 92
\n
\n

73 Ham Radio Today Issue January 1963<\/a>
<\/h2>\n

Nu 1-1\/4 Meter Converter<\/h3> – Three 6CW4 nuvistors in a sensitive 220 MHz converter …… WA2INM 6

RF Controlled Break-in<\/h3> – Automatic send-receive controlled by the key …… W8MQW 8

NTSC Signal for Ham TV<\/h3> – Ham-tV’ers will want to read this one …… K2HQY 10

73 Tests the WRL Tech-ceiver<\/h3> – Works fine. Six meter transceiver …… Staff 18

Linear Amplifier<\/h3> – 3-1000Z kilowatt …… W6JAT 20

73 Reviews the PMR-8<\/h3> – Fine little mobile receiver by Elmac …… W6FNG 26

Transistorized Audio Frequency Meter<\/h3> – No test bench is complete with a good audio freq meter is it? …… W1TUW 28

Tale of a Dark Night<\/h3> – Introduction to the author …… W3MFA 30

SSB or AM<\/h3> – Solution: run both …… G3BID 32

Transistorized Mike Adaptor<\/h3> – Pep up weak surplus mikes with this one …… W4WKM 34

Six Band Ground Plane<\/h3> – James claims that it works out just fine …… W6WAW 36

75 Meter Transverter<\/h3> – Good mobile band simple rig and converter for car radio …… WA6FPG 40

73 Reviews the Knight-kit T-150<\/h3> – 80-6M 150 watts CW-phone out of Allied in Chicago …… K9PWT 48

Scopes<\/h3> – Technical article for this issue. Read please …… Staff 52

The Heath Cantenna<\/h3> – 73 gets out the can opener …… W3UZN 62
\n
\n

73 Ham Radio Today Issue February 1963<\/a>
<\/h2>\n

6M SSB<\/h3> – Pros cons and the gear to do it with …… W2NSD 10

432 MHz Gallon<\/h3> – Legal now …… K2TKN 14

Mountain Topping for Blood<\/h3> – An old pro doesn’t answer ones …… K1CLL 20

Simplified 8JK Beams<\/h3> – The twin-three really puts out a signal. Really …… W6WAW 24

Double Sideband<\/h3> – DSB has some decided advantages you might as well read this and face it …… W3PHL 28

Crystal Oscillator<\/h3> – How to get the stability required for moonbounce on 1296. It ain’t easy …… K2TKN 27

Stutterless VOX<\/h3> – Help-p-p-ps to p-p-p-rev-v-vent sp-p-p-peach imp-p-p-pediments …… W0OPA 37

Ballast for the NC-300<\/h3> – Dang things are always blowing out. Transistorized replacement …… K6GVB 38

Modules<\/h3> – Pep talk on ham modulizing …… W5WGF 40

The RK-715B<\/h3> – Great little inexpensive surplus tube bargain …… K6BIJ 44

The DX-40 with the SB-10<\/h3> – Sideband for peanuts …… K0PGA 50

How to Build a Junkbox<\/h3> – Take one pile of junk some boards nails …… Eslick 54

Mobile Alternators<\/h3> – Converting six volt units to 12 volts plus general discussion …… W5VOH 56

73 Tests the Johnson Messengers<\/h3> – Boy are they fun! …… Staff 60

Station Time Panel<\/h3> – When a ham builds a clock he really builds a clock …… Ives 62

Remote Antenna Tuning Unit<\/h3> – Particularly valuable for mobile applications …… W8HOA 68

Recipe for Cooked Ham<\/h3> – ZZZzzzzzaaaaaap! …… W6NKE 70

Cartoon<\/h3> – Ha ha I hope. Or did your sense of humor get shot off in the War? …… Rogers 72

A Hidden Lab<\/h3> – Or how to get along with a fussy wife …… W3BNS 74

Like New RAX<\/h3> – Surplus gem …… W7IDF 84

Precision Frequency Standard<\/h3> – Another surplus gem. A real gem too. Great …… W4WKM 88
\n
\n

73 Ham Radio Today Issue March 1963<\/a>
<\/h2>\n

Two Meter Pre-amp<\/h3> – Two nuvistors built by a perfectionist …… W9DUT 8

Portable Ragchewer<\/h3> – Low-power rig and small receiver. Eminently portable …… K6LJY 14

Infinite Impedance Match<\/h3> – New type of matching system for beams. Looks good …… W6NAT 20

QRP Transmitter<\/h3> – 1S4 peanut whistle …… W1MEL 22

Let’s Regulate<\/h3> – Voltage regulated power supplies for transistor circuits and filaments …… W2RWJ 24

Amateur TV Transmitter<\/h3> – 432 MHz rig with 832A in final …… W0RQF 28

A Six and Two Portable<\/h3> – Complete bandswitching transceiver …… K8KDX\/6 32

Mode Switch for the Eico 720 and 730<\/h3> – Phone-cW switching system for this popular combination …… W0DSU 38

Nuvistor RF Pre-amp<\/h3> – Brings up signals on all of the less expensive receivers …… W6SFM 40

Receiver Buying Guide<\/h3> – Pictures prices and basic data on all postwar receivers …… W4WKM 44

Measure L & C<\/h3> – Using an audio signal generator …… K6AI 60

Surplus Crystal Calibrator<\/h3> – Real good deal. 500 kHz …… W4WKM 66

Plug-in Cans in Amateur Construction<\/h3> – Those surplus cans can he used for a lot of handy building …… W4WKM 68

CW Sidetone Oscillator for SSB Rigs<\/h3> – Most of ’em have no provision for this important function …… K6CYG 82

The Eico 723<\/h3> – $49.95 60 watt rig.  Does a fine job …… W3UZN 84

The New Look in Surplus<\/h3> – A lot of new stuff is hitting the surplus market …… W4WKM 90
\n
\n

73 Ham Radio Today Issue April 1963<\/a>
<\/h2>\n

Adjustable Regulated Power Supply<\/h3> – Playing around with transistors? Then have: one of these …… W1ISI 8

Diode Noise Generator<\/h3> – Simple test instrument to tune up converters receivers and stuff …… Thomas 15

Selected Circuits<\/h3> – Polar relay test set great for the RTTY group …… W4WKM 18

Decibles<\/h3> – What they are how to use ’em complete with a monograph …… K1MRK 21

Vector VFO<\/h3> – Simple stable oscillator for 80 meters. Great for DX-60 and the like …… W7IDF 24

Wee Birdcage<\/h3> – Restricted space antennas are always of interest …… K3LNZ 26

Protect Your Investment<\/h3> – How to modify your gear without disastering the resale value …… W4WKM 30

A Survey of Mobile Transceivers<\/h3> – There are quite a few …… Staff 32

Cartoon<\/h3> – Ha! …… Rodgers 49

Dress Up Home Made Gear<\/h3> – It doesn’t really have to look like you made it in the cellar …… W0OPA 50

Find the Common Ground<\/h3> – Some suggestions which may improve the interest of your contacts …… K4ZQR 52

Controlled Carrier Screen Modulation<\/h3> – Putting it into perspective …… K3LNZ 54

Compact VFO Dial<\/h3> – Using turn counting dials for multi-turn coils PTOs etc …… W4WKM 56

Making Etched Circuit Boards<\/h3> – Full instructions for a not very hard process …… W1ISI 58

Oversight<\/h3> – Simple addition of a choke which keeps DC off your antenna and you off the floor ……WA2HYS 62

All About Sideband<\/h3> – Well almost all anyway …… Staff 66

Junk Box Station<\/h3> – Shows how easy it really is to build up a station out of stuff …… W4MLE 70

The NCX-3<\/h3> – 73 test report …… W2NSD 78

Solving the Bird Problem<\/h3> – Plaintive plea for cleaner signals …… W5HJV 80

How Low Can You Go?<\/h3> – Tuning from 10 to 500 kHz …… K4ZGM 82

High-efficiency Switching<\/h3> – For that custom final …… W4WKM 88

The SW-240<\/h3> – 73 test report …… W2NSD 90

Stimulus in the Space Age<\/h3> – Amateur telemetry balloons and all that ya ….. W1WQH 92

Waters Switches<\/h3> – For antenna switching etc. Coax switches …… K2CM 98

Inexpensive Coax Connector – Adaptor System<\/h3> – Inexpensive and flexible way of piping small amounts of VHF around …… W4WKM 102

Plot your Skip Zones<\/h3> – Do-it-yourself propagation system …… W9QKC 104

One Ham in a Million!<\/h3> – Well one in 350 000 anyway. Story about 5X2JKO in Nigeria …… K9AMD 106

What is a Ham?<\/h3> – Permission granted to reprint this in non-ham magazines etc …… K7GPZ 108

The Heath HX-30<\/h3> – Test report submitted by 73 reader on Heath six meter SSB transmitter …… W3WTO 112
\n
\n

73 Ham Radio Today Issue May 1963<\/a>
<\/h2>\n

Six Meter Transceiver<\/h3> – Cute little five transistor hand-held unit. Parts kit available …… K3NHI 8

6DJ8\/eCC88 Converter<\/h3> – Six meters down to 14 MHz using really hot front-end tube …… WA2HVK 11

Simple T-r Switch<\/h3> – For the CW man who wants full break-in without TVI …… W4MLE 12

All-band Linear Kilowatt<\/h3> – Using the new Amperex 8179 you’ve been reading-about …… W2LPC 16

Reducing Receiver Noise<\/h3> – Read this one it is really important… No kidding …… Gabus 24

The Mark IV<\/h3> – Nice six meter rig 6146 final …… K2HQY 30

Multi-channel Pre-amp<\/h3> – Feed several rigs from one mic and preamp …… W9CWG 38

A Challenge to the Antenna Experimenter<\/h3> Quads: tri-band five-band two-three-four element etc ….. W4AZK 42

Panoramic Spectrum Analyzer<\/h3> – Build your own …… W0BMW 52

Shielding the Breadboard<\/h3> – Some ideas on neat breadboarding …… W1ISI 58

Coax Folded Dipole<\/h3> – Broad bands things …… W3HJR 62

Getting into Electronics<\/h3> – It’s a good business too ….. W6JAT 66

Selected Circuits<\/h3> – Altec Lansing modular transistorized audio components …… W4WKM 71

Diode Modulators<\/h3> – Big technical article …… Staff 74

73 Tests the Knight-kit P2<\/h3> – A new SWR meter kit …… K6UGT 80
\n
\n

73 Ham Radio Today Issue June 1963<\/a>
<\/h2>\n

Instant 220<\/h3> – The AN\/dMQ-2 is a snap to put on 220 …… W2TQS 8

More Selectivity for the RT-91\/aRC-2<\/h3> – Great transceiver covers 40-80 …… W6BJI 11

PE-97A?  What’s That?<\/h3> – 12V in 250V @ 100 mA out. Just right for Two’er etc …… W4DWU 14

Bandspreading the BC-348<\/h3> – Curing one of the few drawbacks of this great surplus receiver ……W5EUL 18

Lazy Man’s Coil Evaluator<\/h3> – Nice little piece of test gear you’ll want to build. 73 kit …… W0QWY 20

Converting the BC-230 & BC-430<\/h3> – Inexpensive surplus rig which can easily cover 160-10M …… W5EHC 24

Ecdysiasm<\/h3> – RT45\/aRQ-1 demonstrates stripping for fun and profit …… W4WKM 30

A Beginner’s Receiver<\/h3> – BC-453 plus converter product detector etc …… K6JHJ 32

Power Tuning<\/h3> – Motorizing receivers with surplus drive units …… Ives 40

Beam Rotor<\/h3> – Putting one of those surplus motors to work …… K1SDR 43

CW Monitor<\/h3> – One transistor ten minute construction job. 73 kit naturally …… WA2WFW 44

Antenna Relay Unit<\/h3> – Uses BC-442 unit from ARC-5 …… W4WKM 46

Function of the Loading Coil<\/h3> – In mobile antennas …… W9GCQ 52

Propagation Charts<\/h3> – What bands to where when… Maybe …… Nelson 54

More Selectivity for the Two’er<\/h3> – Nice rig but you have to admit that it could use some selectivity …… K6CJN 56

The ART-26 TV Transmitter<\/h3> – Don’t forget to subscribe to the ATV Bulletin $1 per six issues …… K6MIO 58

Special Surplus Section<\/h3> – Thirty-three solid pages of surplus bargains. Have fun …… W2NSD 65

A Bargain Receiver for 220<\/h3> – The R-48\/tRC-8. Easy conversion …… K3IUV 100

Three for the ARC<\/h3> – You didn’t think we’d pass up some ARC-5 conversions did you? …… W7ATK 102

The ARC-5’s<\/h3> – Did you? …… W4WKM 104

Still Another 2 Meter Conversion<\/h3> – ARC-3 transmitter …… W4WKM 106
\n
\n

73 Ham Radio Today Issue July 1963<\/a>
<\/h2>\n

Sizzling Six<\/h3> – Super sensitive six meter converter.  Kit available …… W9DUT 8

Chemical City TU<\/h3> – One of the best RTTY converters to come along so far …… K8IQJ 14

Low-ebb in the Sunspot Cycle<\/h3> – “Humph that’s science fiction” said Tom astoundingly …… K2TKN 17

Two-banding the Swan One Bander<\/h3> – Cinch …… W8DZH 18

Six Meter Transmitter<\/h3> – 2E26 output.  Kit available on terrific tuning-indicator …… K6GKU 22

Two Meter Antenna Coupler and SWR Bridge<\/h3> – Very important item for VHF’ers …… W6TKA 32

Field Day<\/h3> – Eimac hams get out for this annual event …… W6JAT 28

Replacement Power Transformer<\/h3> – What to do when caught without a replacement …… W5PPE 36

The Visitor<\/h3> – Parable …… W2CRR 38

Paco GDO<\/h3> – A good little dipper you may have overlooked …… W5SUC 46

The Cubical Quad<\/h3> – How they work …… W4YM 48

Two-band VHF Quad<\/h3> – Six and two meters …… W6SFM 50

Putting a Quad Up<\/h3> – With a minimum of money and manpower …… K2AAC 58

Three-band Three-element Quad<\/h3> – Now that you know how great quads are here’s how to make one …… W9AIW 62

Propagation<\/h3> – What time to where maybe …… Nelson 65

Active SSB Modulators<\/h3> – Big technical article. Guaranteed understandable …… Staff 66

New Look in RF Ammeters<\/h3> – Do-it-yourselfing ammeters …… W4WKM 72

Knight-kit R-100A<\/h3> – Checking out this inexpensive receiver …… W6EUM 76

Heath Monitor Scope<\/h3> – Long needed product. Works …… W4WKM 78
\n
\n

73 Ham Radio Today Issue August 1963<\/a>
<\/h2>\n

Dry Cell Rigs<\/h3> – QRP mountaintop special for six meters …… K1CLL 8

Diode Noise Generator<\/h3> – 73 kit. Zener diode voltage regulated job …… K9ONT 15

Video Modulation<\/h3> – For the ham-tV contingent …… W8VCO 16

Magic T-r<\/h3> – Best Tee-r yet for VHF with no loss of sensitivity …… K5JKX 20

Saturn 6<\/h3> – Soup up your halo with this tuning method …… K5LPE 22

Utopia Break-in<\/h3> – Hear through your own sending and keep track of the frequency …… W4MLE 24

Practical Vee-beam<\/h3> – This is like a small V-beam handbook sort of thing …… K1MRK 30

Coax Cable Losses<\/h3> – Or why serious VHF men use open wire line …… K5JKX 36

The ON5-pA9 Operation<\/h3> – Details on the Verviers Rally …… G3BID 38

RF Wattmeter<\/h3> – Cardboard mailing tube plus lightmeter… Slick ……W7CSD 46

Transmitting Tubes<\/h3> – Specifications on all popular transmitting tubes …… K5JKX 48

Propagation<\/h3> – What time to when from where maybe …… Nelson 52

Power Supply<\/h3> – Tubeless general purpose …… W7OE 54

Confessions of an Electronic Genius<\/h3> – How to become one …… K6UGT 58

Squelch for the Two’er and Six’er<\/h3> – Nawthin to it …… W0TWP 61

$25 Cheap<\/h3> – Towering up the hard way …… W1MEL 62

Add-o-circuit<\/h3> – International Crystal rings the bell …… W2NSD\/1 66

SWR Meter<\/h3> – More info on using this baffling test equipment ……W8JWP 68

Vertical Antennas<\/h3> – Theory and practice. Learn …… W9EGQ 70

Further on the Windom<\/h3> – Darned good all-band antennax …… W3AFM 76
\n
\n

73 Ham Radio Today Issue September 1963<\/a>
<\/h2>\n

Cast Iron Balun<\/h3> – Using ferrite core inductors. 73 parts kit available …… W4WKM 8

CW Noise Limiter<\/h3> – Or have you noticed that your noise limiter turns off on CW? …… W6SFM 10

Errorless RTTY Converter<\/h3> – Well almost errorless …… K5JKX 12

Bourbon S-meter<\/h3> – As contrasted with the more popular Scotch S-meters. Parts kit on this …… W6TKA 18

Cartoon<\/h3> – Har de har …… Rodgers 20

Towers<\/h3> – Compendium …… K1APA 22

VHF Receiver<\/h3> – Module type construction tuner for VHF converters …… W0RQF 26

Heliwhip Tuning<\/h3> – It is kind of foolish not to have your mobile whip tuned …… W2IAZ 34

Propagation<\/h3> – What time to where maybe …… Nelson 38

UHF Cavity Design<\/h3> – Maybe you aren’t on 6M or up but you can learn something anyway …… K5JKX 40

Dual Antenna System for Mobile<\/h3> – For multiband operation. The XYL will have a fit …… W2IAZ 48

73 Tests and HX-20<\/h3> – Mobile sideband for us paupers. Works fine …… K6KGS 52

Variable Inducer<\/h3> – Remote controlled antenna tuning …… WB2CQM 56

AM Quiz<\/h3> – Maybe you need to sit down and read some of our technical articles …… W5EHC 60

Rotten CW<\/h3> – Right …… W1GQJ 62

Monitor Scope<\/h3> – If you haven’t bought one you’d better build one. This’s easy …… W5JSN 66

Q-5’er Reborn<\/h3> – Should never have died …… W4WKM 70

Code Master<\/h3> – Take one phonograph add ingenuity …… K6OKX 76

Save that Mil<\/h3> – Efficiency pointers for mobile work …… K1JWU 75
\n
\n

73 Ham Radio Today Issue October 1963<\/a>
<\/h2>\n

Do-it-Yourself WBFM Transceiver<\/h3> …… K5JKX 8

Why Johnny Ham Can’t Hear<\/h3> – (with apologies to Rudolph Flesch) …… W6VAT 12

Why Fight Ohm’s Law?<\/h3> …… K5HPT 16

Tri-element Remotely Tuned Yagi<\/h3> …… WB2CQM 22

Rules of Thumb<\/h3> – Or How to Get in the Ballpark and Stay …… W5IUR 28

Combination Antenna Coupler<\/h3> …… W3WPV 30

The Minute Motor<\/h3> …… W3WPV 36

Filament Transformer Conversion<\/h3> …… W5VOH 40

144 MHz Nuvistor Converter<\/h3> …… W9DUT 44

The Portable HE-35<\/h3> …… W3IKH 50

Buyer’s Guide<\/h3> …… Staff 56

Product Detector<\/h3> …… K5JKX 76

Mobile Transceiver Construction<\/h3> …… K5MWH 78

A Novel Type High-capacitance VFO<\/h3> …… YU1FR 86

Radio Astronomy<\/h3> …… WA2BWQ 92

The Big Switch<\/h3> …… W4STX 94

Double Power for CW<\/h3> …… W2EZJ 96

Panadaptor Converter<\/h3> …… K6VNT 98

Compact Transistor Circuits<\/h3> …… Pullman 100
\n
\n

73 Ham Radio Today Issue November 1963<\/a>
<\/h2>\n

Another Approach to TVI<\/h3> – Harmonic Reduction …… K5JKX 8

432 MHz Converter<\/h3> – Using the Navy surplus CFN-46ADT …… W5AJG 16

The Perfect Match<\/h3> …… VE3DGV 24

SWR\/pWR Meters<\/h3> …… W2KPE 28

All-band Conical Antenna<\/h3> …… W5VOH 32

Tool and Workshop Section<\/h3> …… W2RWJ 40

AC Adaptor<\/h3> …… W5KKB 42

Come-a-longs<\/h3> …… K4FQU 44

Of RTTY<\/h3> – And the TUZ terminal unit …… W3TUZ 48

73 Tests the Hallicrafters SK-140K<\/h3> …… W3UZN 62

The Amateur’s Cope Canaveral<\/h3> …… K2YIH 64

Listen Fellow Radio Amateur<\/h3> ……W6SAI 69

Communicator IV on CW<\/h3> …… W9SEK 75

Propagation Forecast<\/h3> …… Nelson 80

Premium Tubes cont.<\/h3> …… Gardiner 81

73 tests the B&W 6100<\/h3> …… W2NSD\/1 84

The Battle of the Century<\/h3> …… W2AAA 86

Shocking… but True<\/h3> …… WA2GCF 98

Slow Scan Vocoder Transmission<\/h3> …… W2AOE 100
\n
\n

73 Ham Radio Today Issue December 1963<\/a>
<\/h2>\n

Some Guys Make It<\/h3> – And then there’s us …… K2ORS 6

QRP Kilowatt<\/h3> …… WA4DQS 8

50 MHz DSB<\/h3> – A novel approach …… Unknown 16

Six Meter Transceiver<\/h3> …… WA2INM 11

VHF Contest Special<\/h3> – A dissertation on the use of the Corner Reflector on 144 MHz …… K9SGZ 20

The VR Tube<\/h3> …… Lyman 24

432 MHz Exciter<\/h3> – From the ARC-27 RF Subassembly …… W5AJG 32

Cartoon<\/h3> …… W5IMJ 38

Sideband Linears<\/h3> …… Staff 42

Barney and the ZDO<\/h3> …… Margolis 46

Antenna Fact and Fiction<\/h3> …… K6CTV 49

How to Fill a Box<\/h3> …… W7CSD 56

Four Bands with the KWM-1<\/h3> …… K6GHU 60

80 Meter Dipole<\/h3> …… W6LVT 65

The Drake 1B<\/h3> …… W5VOH 68

Noise Reducer<\/h3> …… W5SOT 72

Better Results with AM<\/h3> …… VE3AZX 76

An Answer to “Listen .. Fellow Radio Amateur”<\/h3> …… W8COG 82
\n
\n

73 Ham Radio Today Issue January 1964<\/a>
<\/h2>\n

Transistorized Receiver<\/h3> – High Quality …… W3HKX 18

Receiver Deceiver<\/h3> …… W2RWJ 30

Let’s Keep it Simple<\/h3> …… VE2AUB\/w5 36

Going RITTY<\/h3> …… W4RWM 39

Well Grounded<\/h3> …… K4ZGM 42

The Beginning<\/h3> …… W1KSZ 52

How Good is Your Receiver<\/h3> …… WA4EPY 55

Effective Filtering<\/h3> – Or shut that thing off! …… W2OZY 58

Two-element Phased Array<\/h3> …… W7RTP 60

Europe on $2000 a Day<\/h3> …… W2NSD\/1 64

Heath HW-22<\/h3> – 40 meter SSB transceiver …… WA2TDH 74

Automobile Gauge Noise Elimination<\/h3> …… W2BZN 78

Do-it-Yourself<\/h3> – almost …… W5EUL 84
\n
\n

73 Ham Radio Today Issue February 1964<\/a>
<\/h2>\n

Two Meter SSB Rig<\/h3> – employing novel features ……WA2IKL 6

Heath Warrior Tip<\/h3> …… W2DOR 12

Simplified Receiver Design<\/h3> – become an instant expert …… WA2INM 14

Making an AC Capacitor<\/h3> …… K5JKX 23

Heat Dissipating Tube Shields<\/h3> …… K2ENN 24

More on the Magic TR Switch<\/h3> …… K5JKX 23

Miniture AM Tuner<\/h3> – transistorized broadcast tuner …… K6AI 30

Loud Speakers and Enclosures<\/h3> – for phone …… W1JKX 28

Transistor CW Transmitter<\/h3> – 2 Watt 7 MHz …… W2RHD 36

Quieting Small Cooling Fans<\/h3> …… Ivess 39

Unusual Receiver Circuits<\/h3> …… W1OOP

A Long Look at Test Equipment<\/h3> …… K5JKX 42

Practical Ground Systems<\/h3> …… WA6BSO 52

BFO<\/h3> …… K1YVB 62

ZL Special for Forty<\/h3> …… Scharpf 64

RX Audio Probe<\/h3> …… W5VOH 66

Neutralization<\/h3> …… K5JKX 68

Comments on “Incentive Licensing”<\/h3> …… KZ5LC 78

Still More on “Incentive Licensing”<\/h3> …… W2AOE 80

Cartoon<\/h3> …… Rogers 95
\n
\n

73 Ham Radio Today Issue March 1964<\/a>
<\/h2>\n

The Little Punch on VHF<\/h3> …… K5JKX 6

Transistorized RTTY Converter<\/h3> …… W1JJL 14

Modulation Measurement<\/h3> – the simple way …… K5JKX 16

144 MHz Transistorized Converter<\/h3> – high performance …… W3HIX 18

Biasing Tubes<\/h3> …… W2BDG 20

Six Meter Transistor Receiver<\/h3> …… W5JSN 22

Speech Compression for Mobile<\/h3> …… W7SMC 28

Mobile Power Supply<\/h3> …… K6BIJ 30

Neatness Does Count<\/h3> …… WA2BWG 32

3\/4 Meter TV<\/h3> …… K2OPI 35

Swan Transceiver Modifications<\/h3> – AGC amplifier and AF\/rF gain control …… W5TOC 36

Mobile Rig<\/h3> …… K5JKX 40

Transmission Lines<\/h3> – tripe and triva …… W5EUL 44

Modularization<\/h3> …… K5JKX 46

Transceiving High-level Mixer<\/h3> …… W2KPC 48

Electronic Filter Capacitor<\/h3> – or what won’t they transistorize next? …… W2RWJ 53
\n
\n

73 Ham Radio Today Issue April 1964<\/a>
<\/h2>\n

Los Angeles Six Meter Repeater<\/h3> …… K6VWM 6

1296 MHz RF Pre-amp<\/h3> …… I1LOV 14

Our Man in Washington<\/h3> …… W2DUD 18

Under the Noise<\/h3> …… W2NSD\/1 20

The Hallicrafter’s SR-160<\/h3> – a readers look …… W8GTT 24

An Armstrong Sweeper<\/h3> …… W2EMF 26

The Man-key<\/h3> ….. WA60HD 28

IF Spotter<\/h3> …… W5WGF 34

The Naughty Pi-Net<\/h3> – why is misbehaves …… K5JKX 38

60 Watts on 75<\/h3> …… VE1IC 42

Pushbutton Control<\/h3> …… K5JIC 48

Waveguide Simplified<\/h3> …… K5JKX 52

New Ones from Old Ones<\/h3> …… K5FUP 58

Voltage Regulation<\/h3> …… K5JKX 60

What Every Amateur Should Know<\/h3> ….. W2DUD 72

The Vertical J<\/h3> – a simple inexpensive six meter antenna ….. K5JKX 82

Propagation Forecast<\/h3>….. Nelson 96
\n
\n

73 Ham Radio Today Issue May 1964<\/a>
<\/h2>\n

Flying Noise Lock<\/h3> …… K2TKN 6

Matching VHF Antennas<\/h3> …… K5JKX 12

Where Have Our Bands Gone?<\/h3> …… W2DUD 16

The Quad-quad<\/h3> – for two …… W8HHS 20

Class D Amplifier<\/h3> – introducing a new type of audio circuit for transistors …… K5JKX 26

12 Volts from 6<\/h3> …… K6BIJ 32

Single Tube Oscillator-multiplier<\/h3> …… K5JKX 34

SSB DSB AM etc.<\/h3> …… K6HJH 36

Inboard Calibrator for the NCX-3<\/h3> …… WB2MAH 42

Push-to-talk for the HT-37<\/h3> …… W2ZBS 46

Gardner Modulator Revisited<\/h3> …… WA2AKK 50

Now Hear This Fellow Amateur<\/h3> …… W4ICY 54

Frequency Standard<\/h3> …… W2YLH 60

More on the Vertical J<\/h3> …… K5JKX 62

Big Brother and How He Grew<\/h3> – or House or Seven Gables Ham Version …… K4ZJF 64

Amateur Radio Emergency Service<\/h3> …… K7KYG 68

Correspondence from the Members<\/h3> – Letters we bet you won’t see in QST ….. Staff 69

TVI<\/h3> …… K6BIJ 76

Novice Transmitter<\/h3> …… K1WXY 78

H.S.T<\/h3> …… XYL-g3NMR 80

Hobbyist? Write!<\/h3>…… W1MEG 83
\n
\n

73 Ham Radio Today Issue June 1964<\/a>
<\/h2>\n

T-51\/aRQ-8: 6 Meter AM and SSB Transmitter<\/h3> …… W5AJG 6

Nickel Cadmium Storage Batterys<\/h3> …… W4VGS 14

ARB Aircraft Receiver<\/h3>…… W1MEG 16

ARR-1: Adding SSB<\/h3> …… W6BHR 18

TV-10\/a: 220 MHz Transverter<\/h3> …… W5AJG 20

ARR-15<\/h3> …… W1MEG 24

R44\/aRR-5 Receiver<\/h3> …… Ives 26

Surplus Find<\/h3> …… Gardiner 30

Propagation<\/h3> …… Nelson 31

Really High Gain<\/h3> …… K5JKX 33

Smaltz for Semiconductors<\/h3> …… Kidder 34

Surplus Circuit Breakers<\/h3> …… Pafenberg 39

IP-69\/alA-2 Panoramic Indicator<\/h3> …… W8DMR 40

Telechrome 1462-a1 XMTR for 220 MHz<\/h3> …… W5AJG 47

T-28\/aPT-1: 2 Meter AM and SSB XMTR<\/h3> …… W5AJG 52

Correspondence from the Members<\/h3>…… 58

Using 416B and 8058 Tubes on 432 MHz<\/h3> …… W5AJG 66

Regulated Power Supplies<\/h3> …… K5JKX 76

The BC-348<\/h3> …… K8ZHZ 88

TS-118A\/aP Wattmeter<\/h3> …… W1MEG 123

Radar Principles – Simplified<\/h3> …… Gardiner 125
\n
\n

73 Ham Radio Today Issue July 1964<\/a>
<\/h2>\n

The 432’er: Outboard RF Stage<\/h3> …… K1CLL 8

The 432’er: RF Amplifier<\/h3> …… K1CLL 10

The 432’er: Tuned Trough Line Mixer<\/h3> …… K1CLL 14

The 432’er: Local Oscillator Chain<\/h3> …… K1CLL 16

The 432’er: First Evening of Listening on 432<\/h3> …… K1CLL 20

The BH-2<\/h3> …… K5JKX 22

2300 MHz Wavemeter<\/h3> …… K7YJF 26

VHF Tunable Oscillators<\/h3> …… K0CZD 36

Six Meter VFO<\/h3> …… WA6CDO 42

VHF Yagis from TV Antennas<\/h3> …… W6TKA 44

Semiconductor Schmaltz<\/h3> ….. Kidder 50

The Ever Useful T-pad<\/h3> …… K5JKX 58

Symmetrical Latching Relays<\/h3> ….. Ives 62

ARRL Motives: A Closer Look<\/h3> …… W9AIY 68

Working New Countries via Moonbounee<\/h3> …… OHINL\/w6DNG 73

VHF Buyer’s Guide<\/h3> ….. WA4HWH 78

Ham’s View of the Alaska Earthquake<\/h3> …… KL7CKQ 84
\n
\n

73 Ham Radio Today Issue August 1964<\/a>
<\/h2>\n

Two-band Transistor Transmitter<\/h3> …… QZ7BQ 6

Two Meter Transistor Receiver<\/h3> …… K6TOV 14

Stripping Transistor Radios<\/h3> …… K8YCH 20

UHF Beacon<\/h3> …… W6GGV 22

Squelch for Transistor Receivers<\/h3> …… Geisler 28

Those Fragile Transistors<\/h3> …… K4CPR 29

Transistor AM-fM VFO<\/h3> … WA0HQA 30

Transistor Final for Forty<\/h3> ……W0TKX 34

Minute kW Power Supply<\/h3> …. K8IKA 40

The Signal Helper<\/h3> …… W3WJN 44

Transistorized Receiver<\/h3> …… Morgan 46

Simplified Transistor Biasing<\/h3> …… W2HQY 54

Transistors for Ham Use<\/h3> …… WA4HWH 63

Vanguard Modifications<\/h3> …… K0VQY 64

Heath SB-300<\/h3> …… WA2TDH 66

Time for a Change<\/h3> …… W7ZC 68

Moonbounce News<\/h3> …… W2NSD\/1 72

Correspondence from the Members<\/h3> …… 74

Another Keyer<\/h3> …… K9SGZ 76

Design Hints: Transistors<\/h3> …… K0VQY 82

Beast for Ten<\/h3> ….. WA2WYJ 84

Propagation<\/h3> …… Nelson 96
\n
\n

73 Ham Radio Today Issue September 1964<\/a>
<\/h2>\n

Linears for the Two’er<\/h3> …… K1CLL 6

Linear for the Sixer<\/h3> …… K1CLL 11

Portable Six Meter Station<\/h3> …… W1OOP 16

Now That You Ask Me<\/h3> …… W7IDF 29

More on the 6DQ5<\/h3> …… K5JKX 32

SJS Receiver<\/h3> …… K5JKX 34

Another Antenna of Note<\/h3> …… W2RWJ 40

Tuned Line Tank Circuits<\/h3> …… WA4EPY 42

Six the Easy Way<\/h3> ……WA9CZQ 50

Simple Squelch<\/h3> …… K5JKX 53

Souping the TCS<\/h3> …… K7CJJ 54

Varicap Phase Modulator<\/h3> …… W7CSD 56

Friendly Silicon Rectifiers<\/h3> …… W2RWJ 58

Moonbounce in Switzerland<\/h3> …… HB9RF 62

The Heath SB-400<\/h3> …… K1RPB 64

Save Ten?<\/h3> …… WA4HWH 66

SB-10 and the ARC-2<\/h3> …… W6PDD 68

RF Hazard<\/h3> …… W2QCI 70

How to Raise a Beam<\/h3> …… W2RWJ 72

Power for DC Motors<\/h3> …… W4WKM 76

Gonset Sidewinder<\/h3> …… W2NSD\/1 82

Rubbish Wire Long Sky<\/h3> …… K5HVZ 84

Bagpipes and the Phone Men<\/h3> ….. W1JKZ 87

Propagation<\/h3> …… Nelson 96
\n
\n

73 Ham Radio Today Issue October 1964<\/a>
<\/h2>\n

A Ham In the White House?<\/h3> …… K3SUK 6

Compact Full Size 20 Meter Beam<\/h3> ….. W3PMV 10

160 Meter Transmitter<\/h3> …… W4MLE 13

432 MHz Pre-amp<\/h3> …… K6MIO 18

The SJS Receiver Part 2<\/h3> ….. K5JKX 26

The P&H 2-150<\/h3> …… K6LOP 30

The 432’er Transmitter RF Section<\/h3> …… K1CLL 32

The 432’er Modulator<\/h3> …… KlCLL 44

The HP-23 Powers the Swan 100<\/h3> …… K6LOP 47

Modulated Calibration Oscillator<\/h3> …… Ives 48

Ten’er to Six<\/h3> …… K6GKU 51

Varactor Tripler to 432<\/h3> …… W6ORG 52

Blow Up That Meter<\/h3> …… W1ISI 56

City Life<\/h3> …… WA2WYJ 62

Crystal Refrigerator<\/h3> …… K3HTB 64

All About Noise Figure<\/h3> …… K5JKX 66

APX-6 to 1290 MHz<\/h3> …… I1LOV 76

IoAR News<\/h3> …… WA4PDX 87

New Amperex Tubes<\/h3> …… WA1CCH 90

NCL-2000 Linear<\/h3> …… W1ALU 92

Propagation Charts<\/h3> …… Nelson 96
\n
\n

73 Ham Radio Today Issue November 1964<\/a>
<\/h2>\n

VHF Log Periodic Beam<\/h3> …… VE3AHU 6

SSB VFO<\/h3> …… K9ALD 10

Color the Grommet Gone<\/h3> …… K7IDF 12

Cartoon<\/h3> …… Rogers 14

Tuneable Antenna for 432<\/h3> …… K1CLL 16

On the Air on 432<\/h3> …… K1CLL 18

Precision Audio Attenuator<\/h3> …… K9QYI 22

6 Meter VFO Transmitter<\/h3> …… WA2GCF 24

Sterba Curtain for Two<\/h3> …… W2ZBS 30

Electrolytic Saver<\/h3> …… W0HMK 31

KWM-2 Voltage Regulator<\/h3> …… WA4NXC 33

80-40 Vertical<\/h3> …… WB2CQM 34

Transistor AFSK<\/h3> …… K9MLD 36

2 Meter Mobile<\/h3> …… W2CJN 38

Mobile Phone Patch<\/h3> …… W2LNP 40

KWM Operating Notes<\/h3> …… WA4NXC 44

SJS Part 3<\/h3> …… K5JKX 46

UHF Transistor Circuitry<\/h3> …… K1CLL 48

Mobile Noise Limiter<\/h3> …… K0POX 60

Amateur Radio Operating FCC Version<\/h3> …… W5EHC 62

Designing Phase Shift Network<\/h3> …… K5JKX 66

The Easy Way<\/h3> …… K3LNZ 68

Failsafe Power Supply Control<\/h3> …… W3CJM 70

Incremental Tuning for the NCX-3<\/h3> …… K2DXO 72

Lawrence Modification Kit<\/h3> …… K1TVD 74

IoAR: The Amateur Radio Position<\/h3> …… W2DUD 76

SB-33 and MP-10<\/h3> …… W6VAX 79

Amplidyne 621<\/h3> …… K0CER 80

Return to the Art<\/h3> …… K3DSQ 82

Heath Applications Series<\/h3> …… K8AJD 84

Kentucky DXpedition<\/h3> …… 90

Propagation<\/h3> …… Nelson 96
\n
\n

73 Ham Radio Today Issue December 1964<\/a>
<\/h2>\n

SSB Mobile Receiver<\/h3> – Lots of nice ideas in this one …… W3ZFJ 6

Cheap Pair of Socks<\/h3> – Simple linear using inexpensive new tube …… W6NKZ 10

28 Volt Supply<\/h3> – 10 amps at 28 volts for $10 …… K6VNT 12

Weather Detector<\/h3> – Don’t let a tornado suck you up …… K5JKX 14

14 Elements on 432<\/h3> – Simple yagi for 70 cm …… K1CLL 16

Miniature Multiband Tuner<\/h3> – Very clever and useful …… W6SFM 18

Bamboo Birdcage<\/h3> – Thanks to G4ZU and the boomless Quad ……W6WAW 22

Going RTTY – Part 2<\/h3> – Part 1 was in January …… W4RWM 24

Sixer to the N’th<\/h3> – Some small changes for operating convenience …… K1GHO 26

Two’er Talk<\/h3> – These simple changes improve performance significantly …… W8HHS 28

High-level Modulation for Ham TV<\/h3> – Series modulator for improved results ……W7CSD 30

That Elusive SWR<\/h3> – Why throw away those watts? By our Paramp author…… WA6BSO 32

Short Folded Dipoles<\/h3> – How about a 33 foot antenna for 80 meters? …… W6WAW 34

VFO Construction Techniques<\/h3> – Solid for stability. Like the U.S.S. Missouri …… W4WKM 36

Two Meter Double Sideband<\/h3> – The Phantom rises again …… W6TKA 40

When Good Losers Get Together<\/h3> – Non-technical. In fact funny …… WA5EFL 46

Evaluating Receivers<\/h3> – Just in case you’re in the market for a fancy Christmas present …… K5JKX 52

RK 715B on 6 Meters<\/h3> – Old 5D21’s never die; they just turn into quarts of RF …… K2ZEL 58

Testing the Clegg Venus<\/h3> – In case you wondered: it’s tremendous …… 64

SSB With the 6N2<\/h3> – Curious huh? …… K5SGP 68

Unit Power Oscillators<\/h3> – More useful UHF test gear in Bill’s inimitable style …… KlCLL 78

Repair That Mike<\/h3> – Fix up that old mike with an inexpensive new cartridge …… W4WKM 82

Heath Tunnel Dipper<\/h3> – A very useful piece of gear …… W3UZN 84

The Autotransformer<\/h3> – For maximum power supply versatility ……W1ISI 96

Bandpass Coupler Design<\/h3> – Or maybe you like to twiddle knobs …… K5JKX 102
\n
\n

73 Ham Radio Today Issue January 1965<\/a>
<\/h2>\n

120 Watts Mobile on Two<\/h3> – With a well-modulated 5894 …… K5JKX 6

AM the Ham and Transistors<\/h3> – It’s not too easy to get linear modulation with transistors …… Geisler 12

Diode Controlled Break-in<\/h3> – A very clever scheme for easy clean switching …… VE2AUB\/w5 16

Calibration and How to Get It<\/h3> – By one of the greatest hams …… K6BJ 22

Tuned Feeders Forever<\/h3> – Nasty black snake …… W5DWT 24

Pegboard Panacea<\/h3> – Clean up your messy workshop …… K6UGT 27

Low-cost GDO<\/h3> – For those of you who don’t like transistors …… W7CJB 28

Transistor Amplifier Design<\/h3> – It’s not hard at all …… K5JKX 30

Heath Cantenna for UHF<\/h3> – Bet you didn’t know that it’s good on 432 …… K6MIO 34

I’d Like to See<\/h3> – All sorts of clever inventions …… W2LLZ 36

Ham X-word<\/h3> – Wear out your brain …… WA2BWQ 37

Conelrad No; EBS Yes!<\/h3> – Simple monitor for your local BC station …… K3RKX 40

Automatic Load Control<\/h3> – If you’re on SSB you need ALC …… K5JKX 40

Solid-state Noise Clipper<\/h3> – Simple way to get rid of that racket …… K6MVH 48

Take Full Advantage of Your Halo<\/h3> – Simple gadget for easier matching …… WA2DJU 52

Is Your Investment Protected?<\/h3> – Insure your expensive gear …… K9UTN 56

Converting the RDZ Receiver<\/h3> – From 400 to 60 cycles …… K1VDX 66

So We Bought a Spiralray<\/h3> – And found a lot of interesting features …… WA4EPY 6

Two’er Linear<\/h3> – To give you more practical information on inexpensive linears …… K1CLL 70

40 Watt DC-to-dC Converter<\/h3> – It operates on 6 volts and uses a common transformer …… W3UWV 76

Heath SB-200<\/h3> – Very nice …… WA2TDH 78

How to Fish for DX<\/h3> – From a ham who ought to know …… 5Z4ERR 82

Propogation<\/h3> – Conditions aren’t too bad …… Nelson 92
\n
\n

73 Ham Radio Today Issue February 1965<\/a>
<\/b><\/h2>\n

The Ham and TVI<\/h3> – With clever cartoons by K3SUK …… WA6OQP 6

Coffee Can VXO for Oscar III<\/h3> – Be ready for QSO’s to Europe on two …… W7SMC6 W6HEK 10

Transistor Hi Hi<\/h3> – A few interesting notes on Nipponese transistors …… K6QKL\/ KH6 11

Multiband Vertical Antenna<\/h3> – A simple high-frequency antenna for hams with space problems …… W3UWV 12

Let’s Go Ham TV<\/h3> – The details of getting on the air …… K3DSM 18

Solid-state SSB Power Supply<\/h3> – With same vital information as well as construction details …… W1VIV 24

Handy Dandy Zeners<\/h3> – An interesting article in spite of the title …… W0GJB 28

Cooling Notes on the 4-1000A<\/h3> – Keep it cool for long life …… W6VFR 30

120 Watts on Two: Part 2<\/h3> – The first part of this fine mobile rig was in January …… K5JKX W5PPE 32

More on That Simple TR Switch<\/h3> – Published in May 63 …… W4MLE 38

The Disguised Twist<\/h3> – A V-h beam for 2 …… WA6LUM 40

The Backward-upside-down Halo<\/h3> – Unconventional mounting for improved results …… WA41NJ 44

VHF-uHF Mixers<\/h3> – Detectors and mixers using helices strips and semi-cavs…… K1CLL 46

UHF Signal Generator<\/h3> – A generator for 432 and 1296 …… K6MIO 52

Just a Piece of Wire?<\/h3> -for VHF constructors …… K5BLF 56

The Ham and CD Emergencies<\/h3> – Are you doing your share of PS? …… W5CZ 58

Brussels International Mobile Rally<\/h3> – See what fun reciprocal licensing can be? …… G3BID 62

The Callbook Game<\/h3> – It doesn’t take much imagination to extend this one …… WA2TDH 66

Plate Modulation with Controlled Carrier<\/h3> – Interesting idea from a great 73 booster …… W5EHC 68

Audio Bandpass Filter<\/h3> – Something for the CW ham …… Hansen 70

Correcting Errors in the “Errorless RTTY Converter”<\/h3> – Fine title that …… K5JKX 72

The Swan 350<\/h3> – A fine new piece of gear …… WB6KEH 82

The Lafayette HE-45B<\/h3> – For inexpensive 6 meter contacts …… K3VHK 8

The SB-33 on AM<\/h3> – The title is self explanatory …… W7L1A 9

Caveat Emptor<\/h3> – Have you sent in your ad this month? …… Staff 92

Propagation<\/h3> – With some thing new …… Nelson 96
\n
\n

73 Ham Radio Today Issue March 1965<\/a>
<\/h2>\n

Dual VHF Converter<\/h3> – Combination 144\/220 MHz Nuvistor converter …… W9DUT 8

Two-band Collinear Antenna<\/h3> – For 40 and 15 meters by George …… W7CSD 10

The Parametric-transistor Multiplier<\/h3> – A new development in electronics of great interest no doubt …… W6GXN W6QUD 12

Improving the Garden City TU<\/h3> – Don’t let the title fool you; it’s a complete TU whatever that<\/i> is …… W7CJB 16

The Ham<\/h3> – Don’t miss this one. It hurts. Illustrated by K3SUK …… Pirolo 22

Oscar III Orbit Computor<\/h3> – Be ready for the bird to fly …… W7SMC\/6 20

Converting the CB-1 to Six Meters<\/h3> – Don’t let those old CB rigs go to waste. Most are …… WA2INM 26

The Big Bang<\/h3> – A g.g. 813 linear …… W4BV 28

A Better Converter<\/h3> – Six meters four transistors two conversions …… WA0HQA 32

Hints for Microwave<\/h3> – To inspire you to get to work …… K7ZFG 34

A New Power Tube<\/h3> – The 8236 in an AM modulator. The tube is good for SSB too …… W1KSZ 36

Hybrid 432 MHz Exciter<\/h3> – Get on 3\/4 meters with only two tubes and a varactor …… W9SEK 38

5\/8 Wave Vertical for Two<\/h3> – For people who live in backward vertically polarized areas …… K4DJG 42

Printed Circuits-almost<\/h3> – An effective method of attractive construction …… W3ITO 44

Scope Pix Trix<\/h3> – Take pictures of your scope traces …… K6UGT 48

Easy Higher Power<\/h3> – Using the 6146B …… K9FWF 50

AC Transceiver Supply<\/h3> – Our SSB power supply for this month …… K4PNJ\/4 52

Understanding Mixers<\/h3> – You won’t understand this article …… W6BUV 54

Electronic Antenna Control<\/h3> – Or how to point your beam the way your indicator points or something …… WA4GTA 60

DC’izing Scope<\/h3> – Just what you’ve always wanted …… K5JKX 62

The Missing Link<\/h3> – A short discussion of the many troubles that beset our readers …… K9AMD 66

El Toro<\/h3> – Mosley’s limited space antenna that you can use anywhere …… W7OE 68

Heath GR-64<\/h3> – Every ham should have a general coverage receiver. Here’s a good bet …… W3UZN 72

Understanding Schmidt Triggers<\/h3> – If you want to understand Schmidt triggers this is a good article for you. You probably don’t …… K5JKX 74

Waters Mobile Antenna<\/h3> – As used on the block behemoth …… W2NSD\/1 79

UHF Dummy Load<\/h3> – More UHF experimenteringistic gadgetry …… K1CLL 82

Improved Halo Mount<\/h3> – Fine for hams who send their cars to car washes instead of having the XYL do it …… K3JZH 84
\n
\n

73 Ham Radio Today Issue April 1965<\/a>
<\/h2>\n

Europe on Two?<\/h3> – Get ready for Oscar III …… W7SMC\/6 3

Letter from Gus<\/h3> – Beginning 73’s monthly letter from the DX King …… W4BPD\/aC5H 4

1 kW PEP<\/h3> – 811’s in a small box …… W9EWL\/0 6

6 Meter Heterodyne VFO Transmitter<\/h3> – A simple stable easy-to-build transmitter from Bill …… K1CLL 10

Kostless Keyer<\/h3> – Well maybe not kostless but klose to it …… W8MQW 14

Double Hula<\/h3> – A small new antenna. Looks like a halo but good for HF …… K2ICF\/6 16

Propagation<\/h3> – Looks like an interesting month…… Nelson 20

Special SSB Transceiver Section<\/h3> – All the dope on all the HF SSB transceivers …… Staff 22

IoAR News<\/h3> – What’s new with the Institute …… WA4PDX 32

Versatile Code Monitor<\/h3> – Transistorized with P.C. board yet …… W8GXU 34

432 MHz Noise Generator<\/h3> – So you think your converter has a noise figure of 3 dB? …… W6GXN 38

KWS-1 on VHF<\/h3> – It adopts easily for use with transmitting converters …… W4API 44

Amateur Spare That Meter<\/h3> – And a chuckle with K3SUK …… W8BPY 48

Transistor RF Power Amplifier Design<\/h3> – This month’s technical article is a first in the ham field …… WA2DJU 52

Some Worthwhile Seneca Modifications<\/h3> – To improve its fine performance …… K6VNT 56

Two Meter Low-Noise Transistor Converter<\/h3> – From our European correspondent …… Rohde 62

A Novel AFSK Oscillator<\/h3> – For the VHF RTTY’er …… K8ERV 66

Signal Generator for VHF and UHF<\/h3> – You’ll have to turn to page 70 for the real title …… K1CLL 70

Converted Converter<\/h3> – Turn that old converter into a receiver …… W3ZFJ 74

73 Tests the Galaxy V<\/h3> – And is happy with it …… W2NSD\/1 78

Unusual Philological Diversion<\/h3> – Sometimes known by other names …… K2PIJ 80

Caveat Emptor?<\/h3> – Send in your ad now. CE works! …… Staff 92
\n
\n

73 Ham Radio Today Issue May 1965<\/a>
<\/h2>\n

432 MHz Converter<\/h3> – Easy-to-build converter to get you on 70 cm …… K6MIO 6

A New Approach to Phasing<\/h3> – Not all SSB transmitters use filters you know …… W8HXA 12

The Big Bomb<\/h3> – Runs a gentleman’s gallon …… W0SYK 18

Two for Two<\/h3> – Some antennas for our western hams …… W6TKA 22

The Trouble with Fred<\/h3> – A fetching tale illustrated by K3SUK …… Margolis 26

A Versatile Oscilloscope<\/h3> – Every ham needs a scope. This one does a lot but doesn’t cost it …… W0OPA 30

Constant Gain Audio System<\/h3> – Pretty clever. Take a look …… Pullman 36

A Cool kW<\/h3> – Another approach to the inexpensive power supply …… K5YWJ 38

Beer Can Cavities<\/h3> – For use on two. Low noise transistor converter included …… WA2INM\/1 40

Four-element Rhombus<\/h3> – Yeah that’s right …… K2IRK 44

Power Decade Resistor<\/h3> – Or is it “Decade Power Resistor?” …… Lyman 48

Improve Your GDO<\/h3> – If it suffers from the common GDO maladies …… K5JKX 70

Six Meter Junk Box Station<\/h3> – The title sounds vaguely familiar …… K3VLQ 54

Design of Log Periodic Antennas<\/h3> – A 73 technical scoop …… VE3AHU 62

Gus: Part 1<\/h3> – This is it: The beginning of Gus’ life and DXpeditions …… W4BPD 66

73-a-phone<\/h3> – Yeah it’s a stupid title but what do you expect from an editor of S-9? …… K5JKX 70

The 1215’er<\/h3> – Hoisington sure makes 1200 MHz easy to reach …… K1CLL 72

Total Boredom<\/h3> – But not to read …… W71DF 80

Oscar III Highlights<\/h3> – What happened …… K0CER 82

Davco DR-30<\/h3> – Review of a remarkable new receiver …… WA1CCH 86

Litts Code Snitcher<\/h3> – Code monitor-oscillator. Good to at least 16 wpm …… WA6UVS 90
\n
\n

73 Ham Radio Today Issue June 1965<\/a>
<\/h2>\n

A VFO With FSK Provisions<\/h3> – A stable VFO for the SSB-rTTY man …… W6TKA 18

Shoulder Strap Portable<\/h3> – An easy-to-build 6 meter rig for portable operation …… K1CLL 22

Superimposing 6 Meters on Your Tri-bander<\/h3> – The ideal match for a transmitting converter …… W4API 25

The Waters Cadax<\/h3> – A very fine all-purpose electronic key …… WA2TDH 26

73 Tests the Henry 2K Linear<\/h3> – An Imperial Gallon …… W2NSD\/1 28

Gus Part 2<\/h3> – In which a country boy from South Carolina finds true happiness …… W48PD 30

Interlaced Sync Generator for Ham TV<\/h3> – A reply to the anguished cries for more TV information …… WlJJL 34

Fixed or Mobile<\/h3> – Some notes on hamming for the handicapped …… WA9AFI 36

A Compact DC-to-dC Converter<\/h3> – Especially useful for that one tube in a transistor rig …… W6GXN 38

Oscar Round-up<\/h3> – Who was worked and who was heard …… K0CER 40

A Surplus Sleeper<\/h3> – Here’s one you may have overlooked …… W9SLM 44

The Kitchen Heat Sink<\/h3> – We try to get the best titles …… W0CGQ 46

Converting the R-508\/aRC<\/h3> – A modern surplus receiver for 118-148 MHz …… W4WKM 48

Using the 416B on 220 MHz<\/h3> – In the CG-50ABM …… W5AJG 52

High-power with the ART-13<\/h3> – Souping up an old reliable …… K4PFK 56

Converting the ARC-4<\/h3> – A versatile 2 meter transceiver with little work …… W4WKM 60

The CV-253\/aLR Converter<\/h3> – A useful receiver for 38 to 1000 MHz …… W1KSZ 66

220 MHz Converter from the ARC-27<\/h3> – Tunable to get rid of the trash and birdies …… W5AJG 68

Adding GDO Features to the TS47A\/aPR<\/h3> – Every VHF-uHF ham needs a GDO. Here’s an easy one …… W5AJG 74

A Surplus Gold Mine<\/h3> – More specifically the R-105A\/aRR-15 …… W4WKM 78

432 MHz Pre-amplifier From the TD2<\/h3> – Uses a 416B …… W5AJG 82

Fantastic Surplus Catalog Section<\/h3> – Needs no explanation. Just drool and order …… Staff 91
\n
\n

73 Ham Radio Today Issue July 1965<\/a>
<\/h2>\n

A Two Meter Transistor Transceiver<\/h3> – To give you a little encouragement to go portable on VHF …… I1SLO 6

A Simple Two Meter Collinear<\/h3> – Build your own CushCraft collinear …… W5GVE 14

220 Converter Number 9<\/h3> – The last tube converter Hank built but a good one …… W1OOP 18

Reviewing the CushCraft Squalo<\/h3> – It works …… WA2ZCH 20

Push-pull 5763s on 144<\/h3> – You might call it a forest of 5763s …… WA6VTL 24

2C39 Amplifier for 1296 MHz<\/h3> – Get yourself a respectable signal on the band …… WA8CHD 26

A Varactor Tripler to 1296 MHz<\/h3> – The perfect mote for the 2C39 amplifier …… W6ORG 30

The CPO-cWM<\/h3> – Translation: Code Practice Oscillator-cW Monitor …… WlJJL 32

A VHF Flashback<\/h3> – A few dewy-eyed memories for the old timers …… W6SFM 34

Silver-plated 417A Converter for Two<\/h3> – Of course you don’t have to silver-plate it …… K2KTV 38

Testing the Galaxy Rejector<\/h3> – A useful accessory for your SSB gear …… WA2TDH 41

20 WPM – or Bust!<\/h3> – Hints on getting the Extra Class license from an Edison Award Winner …… WA6VTL 42

The Gonset Six Meter Sidewinder<\/h3> – Transistorized sideband on six …… Staff 50

Converting the Swan Monoband to Two<\/h3> – A bargain two meter SSB transceiver …… K9EID 52

How’s Your VHF Antenna Working?<\/h3> – Not the ultimate but a useful method of checking gain …… WA2INM 59

A Potpourri of VHF Hints<\/h3> – Four short articles that can be applied to VHF and HF …… Staff 62

The Design of VHF Tank Circuits<\/h3> – Don’t let the math scare you away; the graphs give the answers …… W6GGV 66

Gus: Part 3<\/h3> – More hints on DX from the DX King …… W4BPD 76
\n
\n

73 Ham Radio Today Issue August 1965<\/a>
<\/h2>\n

This One Sounds Good – Like a Transmitter Should<\/h3> – A fancy name for an article about a 20 watt six meter AM transmitter …… W2BHT 6

Going RTTY: Part 3<\/h3> – The scope monitor …… W4RWM 12

Imagineering With Meters<\/h3> – Put those miscellaneous meters to good use …… W8BPY 14

The EHS Portable Dipole<\/h3> – Works from 80 to 6 …… W9FQN 16

Some Notes on Grounded-grid Linear Amplifiers<\/h3> – And some interesting ideas in a 8072 linear …… K4ZZV 18

Simplified Solid-state<\/h3> – Simple easy-to-use practical ham transistor circuits …… WA2INM\/1 24

All-band Tuning for the Drake 28?<\/h3> – Easier and harder than you think …… K9LTD 26

When Standard Switches Won’t Fit<\/h3> – Making and using odd-ball switching arrangements …… Ives 28

A CHU Time Receiver<\/h3> – In case you don’t have a watch …… W2LYH 30

Switching with Diodes<\/h3> – It’s easy-and very useful …… K1SDX 3

Improving the Paco GDO<\/h3> – And other tube-type grid dip meters …… K1AMN 41

Another Way to Measure Noise Figure<\/h3> – Hmmm. What’s the other way …… K5JKX 44

The Big Sail<\/h3> – The neighborscaring-ist 432 MHz antenna you’ll ever see …… K6MIO 50

Gus: Part 4<\/h3> – Now what’s he up to? …… W4BPD 62

The SB-34<\/h3> – Sideband Engineers improves their already excellent SB-33 …… W8QUR 68

A DC Dummy Load<\/h3> – Here’s a use for those tubes you were going to use for lamp bases …… Lyman 70

Quick and Easy Add-on Neutralization<\/h3> – In case unlike most hams you don’t plan ahead …… K1CLL 72

Polar Versus Solar Beam Orientation<\/h3> – Personally I use my Boy Scout compass …… W6TAQ 7

Parallel Resistance Nomogram<\/h3> – Now all you have to do is find this article when you need it …… WA2BWQ 76

An RF Amplifier for 432<\/h3> – Not exactly a 3 dB noise figure but …… K1CLL 7

The National HRO-500<\/h3> – Sigh …… W2NSD 80
\n
\n

73 Ham Radio Today Issue September 1965<\/a>
<\/h2>\n

Der Kleiner Keyer<\/h3> …… WB2KPE 6

QRM on 432!<\/h3> …… W2NSD\/kP4 14

Practical Meteor Scatter<\/h3> …… K1CER 20

A Simple DX Antenna<\/h3> …… W6WAW 24

The Ultimate in Transmitter Control<\/h3> …… WB2CCM 28

DSB Circuits<\/h3> …… W6TKA 34

The Zorch-proof Connector<\/h3> …… W4WKM 36

An One Filament Transformer Bridge<\/h3> …… W5NGX 38

The Cheap SWR Bridge<\/h3> …… WIJJL 42

Simplified Tuning for the Drake 2B<\/h3> …… W7ZC 44

W2NSD in Hungary<\/h3> …… W2NSD 46

Two Meter Transmitting Converter<\/h3> …… K1CLL 50

Why Use Fuses?<\/h3> …… W4WKM 52

Writing for 73<\/h3> …… W2NSD 54

A Gold-award SOS<\/h3> …… W2AAA 56

Gus: Part 5<\/h3> …… W4BPD 66

The Heath Ham Scan<\/h3> …… WA2TDH 70

The Sub-antenna<\/h3> …… W8ADV 72

Passivating Aluminum Alloys<\/h3> …… Kidder 74

A Surplus SWR-power Meter<\/h3> …… K9SOA 82

An UHF Signal Source<\/h3> …… K1CLL 84

Light Bulbs for Dummy Loads<\/h3> …… W8QUR 86

VFO Stability<\/h3> …… W6BUV 88

Low-cost 6-10 Mobile Antenna<\/h3> …… W3GSC 94

How to Screen Modulate<\/h3> …… K5JKX 96

Surplus Switching<\/h3> …… W4WKM 104

The Evolution of a Transistor Transmitter<\/h3> …… W6WFH 106

Build or Buy?<\/h3> …… W7OE 114

Let’s Go Up or Down<\/h3> …… W8VVD 118
\n
\n

73 Ham Radio Today Issue October 1965<\/a>
<\/h2>\n

2 kW Mobile<\/h3> – PEP of course …… W2DMK 6

Meterama<\/h3> – Get some good use from those old air-speed indicators …… W5GWF 12

Six for Six<\/h3> – Six elements for six meters …… WB2CQM 18

A State-of-the-art Converter<\/h3> – Integrated circuitry comes to hamdom …… W3HIX 22

Hamfest Out on a Limb<\/h3> – A little step toward international hamming …… Margolis 26

Are 20 Cent Transistors Coming?<\/h3> – Apparently so …… W7SMC 30

The Lowly Coax Fitting<\/h3> – A little picture article …… W5VOH 34

An Expedition to UJ8<\/h3> – 20 000 feet up …… UB5UG 38

A Junk Box Power-sWR Meter<\/h3> – In case you missed the two SWR meters last month …… K4QYC 44

The Design Industries Diplomat<\/h3> – A fantastic new piece of gear …… W2NSD 48

A Ham Crossword Puzzle<\/h3> – Unfortunately we didn’t have room for the solution …… K1CLM 50

Two Meter Transistor Transmitter<\/h3> – Get two watts out of a 2N107 on two …… K1CLL 54

A Reliable Audio Source<\/h3> – A 7 lb generator that works as well as a two ounce transistor one …… Ives 62

Improving the Heath Mohawk<\/h3> – Pepping up the RF and audio …… W9ECQ 68

Gus: Part 6<\/h3> – Gus in Prague …… W4BDP 76

The National NCX-5<\/h3> – An amazing rig …… W5DWT 84

Testing the Heath kW Kompact<\/h3> – The Little Bomb …… WB6KEH 88

Improve your Monoband Swan<\/h3> – For better stability and class C …… K6LGW 90

That Unwanted Sideband<\/h3> – Another in the 73<\/i> Sideband Series …… K5JKX 92

DC Transformers<\/h3> – Need 28 volts in your car? …… W6ANU 102

Getting the Most from Your Two’er<\/h3> – A few more changes for one of the most popular pieces of ham gear …… WA2QZH 111
\n
\n

73 Ham Radio Today Issue November 1965<\/a>
<\/h2>\n

We Got Across!<\/h3> – Catching up with the past: No.3 …… W2AAA 6

An Audio-tV Transmitter<\/h3> – Broadcast sound and video on the same carrier …… W8VCO 14

Hybrid Phone Patch<\/h3> – Of course we don’t really approve of phone patches …… KH6IJ 18

A Coax Antenna for Twenty<\/h3> – Or fifteen or ten …… W2NQS 20

Six Solid Watts an 160<\/h3> – We keep telling you that tubes are obsolete …… K9IAH 22

Half-rack Panels<\/h3> – Sure beats those orange crates for mounting …… W2DXH 26

A Novel ALC Circuit<\/h3> – Why didn’t someone think of this before? …… W2KAK 30

The Nuvistatectar<\/h3> – Clever product detector for your old receiver …… K9EID 32

Transistors for Hams<\/h3> – Which inexpensive transistor to use where …… WA6BSO 34

The Flex Match<\/h3> – Perfect for feeding a coathanger …… W3ZVT 38

Adding ALC to the Swan 240<\/h3> – There are lots of old 240s around …… K5JKX 40

A TV Converter<\/h3> – Use your TV camera with a normal TV set …… W9SEK 44

Crystal-controlled Transmit With the KWM-2<\/h3> – Works with other transceivers too …… HB9TL 46

Lovers Lane<\/h3> – Hmmm. Drawings by K3SUK …… Lattak 48

A Modern Frequency Standard<\/h3> – Not expensive or complicated either …… W5NUW 50

The Baffling Totem<\/h3> – Keep the kids out of your shack …… W7PXE 54

432 Solid-state Local Oscillator<\/h3> – A more modern LO for the 432’er …… K1CLL 56

Six Meter Transmitting Converter<\/h3> – Twenty in six out …… K0AHD 62

The VHF Newcomer<\/h3> – Our VHF editor gives you a few hints …… K0CER 66

Gus Part 7<\/h3> – What happens when a South Carolina Baptist visits the Vatican? …… W4BPD 70

The Heath SB-110<\/h3> – Single sideband on six to match the SB-line …… WA1CCH 78

Transcam’s SBT-3<\/h3> – There are a lot of interesting ideas in this one …… W2NSD 86

Evolution of an Antenna Tower Florida Style<\/h3> – How about a 70 ft. telephone pole in your yard? …… K4FQU 88

Slippery Six<\/h3> – A VFO-heterodyne battery rig for six …… K1CLL 94

A Light Wattmeter<\/h3> – Trying to improve an old idea …… Henry 98

VFO Control of SSB Receivers<\/h3> …… W0CGA 110
\n
\n

73 Ham Radio Today Issue December 1965<\/a>
<\/h2>\n

Solid-state 432 Exciter<\/h3> – Puts out 8 watts on 432 MHz. A ham scoop …… W9SEK 6

8058 Nuvistor Preamp for 432 MHz<\/h3> – Complete plans and layouts …… I1L0V 10

UHF-vHF Dipper<\/h3> – 50 to 500 MHz with no work …… WA1CCH 11

Transistorized FSM<\/h3> – Printed circuit board available for this one …… W1JJL 14

Ham Christmas Gifts<\/h3> – Ho ho ho! It’s that time again …… 16

RF Measurements<\/h3> – Build a Q-meter and impedance bridge …… K5JKX 20

A New Two Meter Heterodyne Exciter<\/h3> – Use a suppresser balanced mixer to get on two …… WA2JAM 28

Licensing in the Belgian Rallies<\/h3> – A report on the 1964 rallies …… G3BID 24

A Regulated Solid-state Supply<\/h3> – Here’s the supply for the 432 exciter on page 6 …… W9SEK 34

Transistor Twenty<\/h3> – A tunable twenty meter converter …… Scott 38

Frame Your Awards<\/h3> – A few hints on showing off your prizes …… W7OE 40

Lazy Man’s Phone CQ’er<\/h3> – A voice controlled relay …… WA2MTB 42

The 1215 Transistor Superhet<\/h3> – Part 1; The Mixer …… K1CLL 46

The Solid-state Slippery Six<\/h3> – A transistorized heterodyne VFO …… K1CLL 50

A Crystal Controlled Front-end<\/h3> – Put that old pre-selector to work …… K1QIM 52

Field Effect Transistor Primer<\/h3> – Another ham scoop. FET’s are mighty useful …… WA6BSO 54

A Doll for Serifina<\/h3> – Reminiscences of an old ship sparks …… W7IDF 66

Build a 4-1000A Socket<\/h3> – The tubes can be cheap but the sockets! …… W7CSD 70

An Audio Frequency Standard<\/h3> – Transistorized of course …… K8ERV 72

A Bumper Mount for “Impossible” Cars<\/h3> – If one won’t do it why not use two? …… W7SMC 78

Gus Part 8<\/h3> – Gus descends on Lebanon Egypt and the Seychelles …… W4BPD etc 84

Two Through Twenty Field Strength Meter<\/h3> – Tunable and transistorized too …… W7OE 9

A Low-power Standby Transmitter<\/h3> – AM on HF? …… W7CSD 104

The Full-wave Tripler Myth<\/h3> – We don’t like to rush things …… W6LWE 100

The Three-in-one Birdcage Beam<\/h3> – For 10 15 and 20 …… ZS3NZ 110
\n
\n

73 Ham Radio Today Issue January 1966<\/a>
<\/h2>\n

The Space Monitor<\/h3> – Now here’s a real construction project …… W9DUT W9JFW 6

A Unijunction Keyer<\/h3> – Build a modern keyer for less than $20 …… WA6TSA 12

Two-element 20m Vertical Array<\/h3> – Get 3 dB gain and 15 dB front-to-back ratio …… W6TKA 16

They Said It Couldn’t Be Done<\/h3> – What? A female build a rig? …… WA2YTK 18

Simplified RF Measurements<\/h3> – Measure impedance and power easily …… WA6BSO 20

A Six Meter Peanut Whistle<\/h3> – Every ham wants a walkie-talkie; here’s Larry’s …… WA2INM 24

A Visit to the CN8s<\/h3> – Edgar tells a little about his trip …… G3BID 28

The Pot Box<\/h3> – Any experimenter needs one …… K6UGT 32

A RTTY Signal Generator<\/h3> – Good for SSB and AM too …… W8GXU 34

This is Fine Day<\/h3> – The first intercontinental ham QSO …… W2AAA 38

Transistor Meter Amplifiers<\/h3> – Need a 10 microammeter? …… WA6BSO 44

The Twixer<\/h3> – Add six meters to your Two’er …… W0HMG 46

A Line About Line Noise<\/h3> – Maybe that power blackout was caused by a mad ham …… W4NJF 50

Assembling the Sideband System<\/h3> – The conclusion of our SSB series …… K5JKX 54

Gus: Part 9 – Agalega Here I Come!<\/h3> …… W4BPD 6

Build the OTC<\/h3> – A one transistor converter for VHF. Build one …… WA4SAM 74

The Eico 753K<\/h3> – Eico’s really scooped with this one …… W3KET W3TND 76

The Drake R-4 Receiver<\/h3> – A very versatile receiver for your money …… WA2TDR 78

73 Tests the Knight C-577<\/h3> – Audio compression works …… WA1CCH \ud83d\ude2f

VFO Stability Part 2<\/h3> – Transistors are better than tubes …… W1KNI 82

73 Tests the Coveya 6<\/h3> – Heh heh. The neighbors don’t know it’s for six …… WA1CCH 84

Twelve cm Heathscope<\/h3> – It’s the Heath IO-12 …… W7IDF 86

The 1215 Transistor Superhet<\/h3> – Part 2 the local and other oscillators …… K1CLL 90

Vibrator Checker<\/h3> – It’s a stupid subject if I say so myself …… WA1CCH 95

Low-Noise UHF Transistors<\/h3> – Don’t read this if you’re a tube man. It’ll make you cry …… W1OOP 96

IoAR News<\/h3> – News from the new IoAR Secretary …… 98

What’s Your Mobile Strength?<\/h3> – Simple FSM adapter for your car antenna …… W9NTP 102

Why Instruction Books?<\/h3> – Why indeed? …… W70E 10

Improve the NF of Old Receivers<\/h3> – Soup up the ol’ hearin’ aid …… WA4EPY 108
\n
\n

73 Ham Radio Today Issue February 1966<\/a>
<\/h2>\n

An 8163 Linear<\/h3> – An all-band 2 kW linear …… W6OVW 6

And Then There’s Phasing SSB<\/h3> – Discussion and a simple practical exciter …… WA6KLL 10

Better Selectivity for Your Transceiver<\/h3> – CW selectivity makes CW operation easier …… Roanhaus 16

A Crystal-controlled Front-end<\/h3> – Stable high-frequency reception on your old receiver …… W1QIM 20

The Key to Peaceful Coexistance<\/h3> – Between six meters and channel two …… K6MVH 22

Breadboarding<\/h3> – Excellent discussion of experimenting …… W2DXH 24

Noise Considerations in a Pre-amplifier<\/h3> – Necessary information for UHF hams …… WB2EGZ 28

Transistor Receiver-vU Style<\/h3> – Scrounging wins! …… VU2NR 30

The Astro Ten<\/h3> – Simple ten meter transmitter-converter for mobiling …… W3YZC W3IXL 34

Improving RTTY Reception<\/h3> – Good hints for the teletype fan …… W4EHU 38

Quick and Easy Bias Supplies<\/h3> – Steal a little bias without fuss …… K5JKX 42

A Word About Crystals<\/h3> – And not on encouraging one eitheri …… K0JXO 44

The Design of Parabolic Reflectors<\/h3> – Now how do you make them? …… K3PBY 46

Transistor CW Adapter<\/h3> – Especially for the SB-33 …… W5JSN 50

Give and Take<\/h3> – History of international radio conferences …… W2AAA 52

The Zero Meter Band<\/h3> – A bit of fine fantasy …… WA2TDH 58

Automatic Tuning for the ARC-5<\/h3> – This one’s a real thriller …… W4WKM 62

Boasting Talk Power<\/h3> – In ALC type transmitters …… K2IKZ 64

Seeing Your SWR<\/h3> – Clever scheme for antenna work …… K5JKX 66

The 1215 Superhet Part 3<\/h3> – The final article: if of and assembly …… K1CLL 74

Put Your SB-33 on CW<\/h3> – A scheme totally unlike that on page 50 …… WA6PGA 78

73 Tests the Tunaverter<\/h3> – A quick look at a tunable transistor converter …… WA1CCH 80

How to Be a First Class Lid an Phone<\/h3> – Without really trying …… WA5DEL 82

Some Ideas on Noise-free CW Reception<\/h3> – Why listen to all that trash? …… K4DAD 8

The Crystal Decade<\/h3> – Full frequency coverage with crystals …… W4ATE 90

Hero of Ham Bands<\/h3> – Deke put Nokomis on the map…… K9AMD 96

Amateur Frequencies<\/h3> – Wonder where forty went? …… Schmeling 98

Semi-modernizing Vibrator Power Supplies<\/h3> – Get more power from those old Vibrapacks …… W6TKA 102

Use Your GDO and Z-meter<\/h3> – They’re very useful as this article indicates …… W0BMW 104

The Care of Storage Batteries<\/h3> – At least lead-acid types …… W5SOT 108
\n
\n

73 Ham Radio Today Issue March 1966<\/a>
<\/h2>\n

Circular Polarization<\/h3> – Use CP for moonbounce trop and OSCAR …… K6MIO 6

Solid-stale Sixty<\/h3> – A 60 watt regulated power supply for and with semiconductors …… K3LCU 12

Crystal Oscillators<\/h3> – Tube transistor and FET. his is a good one …… W6GXN 14

Slaying the Monster<\/h3> – Or: Why fear TV? …… W0EDO 18

Diary of a DXpedition: VP2VD<\/h3> – So you think it’s just a matter of sitting by the pool and operating? …… K4IIF 20

Unmodifying the S-38<\/h3> – Have you ever met a ham who hasn’t had a S-38-once? …… WA5MCU 26

Vector Vector<\/h3> – Vector boards are sure useful …… W2DXH 28

Cathkey<\/h3> – Is this the simplest automatic keyer? …… K2UOC 32

All Solid-state<\/h3> – Another interesting one from one of (y)our favorite authors …… W1OOP 34

QSL Here is Homebrew OM<\/h3> – Homebrew QSLs? …… WA2ZKR 36

The 88 Cent Varactor<\/h3> – Who says they’re all expensive? …… WA6BSO 38

12 Volt Beetle Juice<\/h3> – Even the Fastbacks are 6 volts. Rah for VW …… DJ2UL 48

The HD-10<\/h3> – Heath’s new electronic keyer …… W2JDL 50

Solder and Soldering<\/h3> – Make your soldering stick …… K4CPR 52

The Rhombic Antenna<\/h3> – A round-up of information on these almost-legendary antennas …… W0SII 54

The Vacap Tester<\/h3> – Here’s a tester that sings at you …… W0BMW 60

The Feedline Argument<\/h3> – A little more fuel for it …… W0OPA 66

Letter from Jail<\/h3> – Stuffy readers: skip this …… W6GTC\/jail 70

Improving the HX-20 HR-20 and HP-20<\/h3> – Who could improve on this title? …… K0LFA 74

The Walky-Nosy<\/h3> – A portable emergency communications receiver …… K6EDX 78

Our Friend the R.I.<\/h3> – Maybe a little more appreciation of the FCC is called for …… W7IDF 82

Those Good Old Ham Bands<\/h3> – They’re getting mighty thin …… W7ZC 88

Low-pass Audio Filters<\/h3> – The full story he says …… K5JKX 90

Gus Part 10<\/h3> – I think I’ll take a plane and leave the bus to Gus …… W4BPD 98
\n
\n

73 Ham Radio Today Issue April 1966<\/a>
<\/h2>\n

Barefoot and All That Jazz<\/h3> …… W7IDF 6

A Simple Six and Two Amplifier<\/h3> …… K1CLL 8

That Pretty Anodizing<\/h3> …… W8BPY 12

The Bee Eliminator<\/h3> …… W8VVD 14

The Six Meter Jewel<\/h3> …… K3PXT 16

The Ascendency Curve Yagi<\/h3> …… K6EDX 20

The Uhfit<\/h3> …… WA1CCH 26

Six to Two Transmitting Mixer<\/h3> …… K9EID 40

A Slotted Line for 1250 MHz<\/h3> …… WA8CHD 42

A Short Look at Current Propagation<\/h3> …… Nelson 46

Diddleboxes<\/h3> …… W2DXH 48

Modernizing a 432 MHz Converter<\/h3> …… W1OOP 54

Power Control Through Magnetic Beaming<\/h3> …… W2OLU 58

A Look at Antennas for DX<\/h3> ….. K6ZGQ 68

Someone Should Do Something About<\/h3> …… K3BNS 74

The Tranx Circuit<\/h3> …… K7VMV 76

A Semi-switchless Directional Coupler<\/h3> …… VE2HE 80

Two Buck Monitor<\/h3> …… WA6KLL 82

Controlled Audio AVC System<\/h3> …… EI4R 84

One-way Dual Battery<\/h3> …… WA0AIY 86

Multi-channel Transistored Pre-amp<\/h3> …… K9SGZ 100

Ferrite DF<\/h3> …… W1DFS 101

Gus : Part 11<\/h3> …… W4BPD 102

Built-in Speaker for the TR-3<\/h3> …… K5SGP 112

Diode Checker<\/h3> …… K8ABR 112
\n
\n

73 Ham Radio Today Issue May 1966<\/a>
<\/h2>\n

New VHF Circuits for Transistors<\/h3> – 6 meter converter and filter from Frank Jones …… W6AJF 6

RF Applications of N-channel FETs<\/h3> – Very important article; a 73 scoop of course …… WA5KLY 12

Size is Impressive<\/h3> – A little humor to brighten the day …… K3VMZ 14

FSK Principles<\/h3> – How to transmit RTTY on HF …… W4EHU 16

VHF-uHF Panoramic Reception<\/h3> – Now you can watch that empty band …… W5NPD 20

UHF Grid Dipper<\/h3> – Excellent dipper even if it does use tubes …… WA6BSO 24

PY2USA<\/h3> – Fostering good relations through ham radio …… PY2CUB 32

W2USA\/tV<\/h3> – Good publicity for hamming at the ’39 World’s Fair …… W4DKJ 34

12 Volts on 6 Meters<\/h3> – Ed doesn’t like semiconductors I guess …… K8ADG 38

432 the Easy Way<\/h3> – Cheep too …… WB2FYB 40

Dealing with the Information Explosion<\/h3> – In a blood thirsty way …… W2DXH 42

Regulated DC-to-dC Converter<\/h3> – Put in 6 to 24 volts and get out 12! …… W6GXN 46

How Much Capacitance for that SSB rig?<\/h3> – Beat the high cost of microfarads …… W4VRV 50

The Mini-supply<\/h3> – A simple inexpensive regulated power supply …… WA6BSO 54

Origin of the Code<\/h3> – An interesting sketch of history …… W2AAA 58

Understanding AVC<\/h3> – A very thorough article …… K5JKX 66

Why Work the World Now?<\/h3> – Complete rules of 73’s new WTW DX certificate …… W4BPD 78

A Private Listening Speaker<\/h3> – For mobiling …… K5BEC 80

A Solid-state Product Detector<\/h3> – The semiconductor answer to pentagrid mixers …… W6GXN 84

HW-22 on CW<\/h3> – Takes about 10 minutes too …… W7UXP 88

Transistor Power Supply<\/h3> – Simple quick and cheap …… WA2TOV 90

Ham with a Heart<\/h3> – K7SML a multiple sclerosis victim …… K7NZA 92

Fuses<\/h3> – What fuse to use where …… W9ZZH 95

Confession<\/h3> – A SF thriller …… W0HMK 96

Low-voltage Gonset Super Six<\/h3> – Throw away that HV power supply …… W0BMW 100

HX-50 on MARS<\/h3> – Very simple procedure …… K9CZI 104

Improving Der Kleiner Keyer<\/h3> – A few correct ions and improvements …… W4BRS 106

More Contacts from Within<\/h3> – Simple indoor antennas for high frequency use …… K3RXK 108

For Those Who Have Given Up Code<\/h3> – Encouragement for novices and technicians …… WA8BJK 110
\n
\n

73 Ham Radio Today Issue June 1966<\/a>
<\/h2>\n

The Micro-ultimatic<\/h3> – 73 scoop: integrated circuits in a high-performance keyer …… W1CFW 6

A Transistorized Scope<\/h3> – Another ham scoop: use transistors for deflection amplifiers …… K8ERV 14

50 Watts on 50 MHz for $50<\/h3> – This project should prove popular …… K1CLL 18

Two Meter Transistor Converter<\/h3> – Cheap simple and works well …… W6AJF 24

220 MHz Transistor Converter<\/h3> – Grounded emitter or grounded base too …… W6AJF 30

432 MHz Transistor Converter<\/h3> – Four 50 cent transistors give you a 4 dB converter …… W6AJF 34

Standard Time and Frequency Transmissions<\/h3> – What time did you say it was? …… W6JTT 38

A Simple Two-tone Test Generator<\/h3> – Find out your true power output in PEP ……WA6BSO 42

BC-348 Crystal Filter<\/h3> – Improve the filter in your BC-348 …… K2ZZF 46

APA-2 Pre-amp for Two<\/h3> – Of course a transistor works better but …… W5LTR 48

Modernizing an SCR-522<\/h3> – That’s what I need a modern SCR-522 …… WA6BSO 50

The First and Last Q-5’er<\/h3> – A little history of command sets …… White 60

The Stoner RT-1 RTTY Converter<\/h3> – A transistorized RTTY receiving adapter …… WA6BSO 64

Five-band RDZ<\/h3> – Marry a RDZ to a standard coil tuner …… K3HIL 66

Gus: Part 12<\/h3> – See where our South Carolina boy is now …… W4BPD 68

Surplus Conversion Guide<\/h3> – Find out where to find that conversion …… WA1CCH 74

220 MHz Receiver from the ARC-27<\/h3> – A good use for the guard receiver …… K3CES 78

BC-453 Series Receivers<\/h3> – The simplest conversion …… K1EUJ 82

Do You Want a Lawsuit?<\/h3> – $100 000 is a lot …… W7OE 96
\n
\n

73 Ham Radio Today Issue July 1966<\/a>
<\/h2>\n

MARS HF Mixer and Amplifiers<\/h3> – Also good for putting your tri-band rig on 15 or 10 …… WA4KIH 6

Two-element Weeping Willow for 15<\/h3> – Perfect for novice DX’ers …… WA8MVR 12

Frequency Measurements for Hams<\/h3> – Receives VLF too …… W6BLZ 14

VHF Parametric Transistor Multiplier<\/h3> – Experimenters must read this one. A scoop of course …… W6GXN 20

How to Get Your Extra Class License<\/h3> – Here’s the easiest way to do it …… W5TOM 26

A Transistor Analyzer Using FETs<\/h3> – It checks h11 h12 h21 and h22 …… K3LCV 30

A Field Effect Voltmeter<\/h3> – Here’s a real transistorized VTVM: 22M input resistance …… K3LCV 34

An FET Audio Compressor<\/h3> – Use FET’s for high input impedance …… K3VNR 38

The Kindly Keyer<\/h3> – This IC keyer uses a commercial PC board …… WB6AIG 46

Save That Transistor!<\/h3> – Defective transistors as Zeners and varactors? Sure! …… K9VXL 50

Lambda Lines<\/h3> – Scraps of twinlead a make good Lecher lines …… W2DXH 54

Designing Transistor RF Amplifiers<\/h3> – Good info for the serious experimenter …… Thorpe 58

A 75 Watt Two’er Linear<\/h3> – It uses Bill’s favorite Compactron …… K1CLL 66

A Better Sideswiper for Electronic Keyers<\/h3> – Your cat will like this one …… W6BLZ 70

Replace Your 811s with 572Bs<\/h3> – The right way …… WB2EPG 72

UB5UG’s Five-band Vertical<\/h3> – It’s pretty clever and simple too …… W8FAZ 74

Don Miller DXploring<\/h3> – The life of leisure on a lush tropical island …… W9WNV 76

Gus: Part 13<\/h3> – Gus keeps rolling along …… W4BPD 78
\n
\n

73 Ham Radio Today Issue August 1966<\/a>
<\/h2>\n

More Power on Six<\/h3> – Drive this linear with your AM or SSB exciter …… WA9JGU 6

James Dandy Mixer<\/h3> – A very simple yet useful test instrument …… W2DXH 12

A Poor Man’s 220 Transmitter<\/h3> – It puts out half a watt; good for local work …… WB2EGZ 14

Another Solid-state 2m Transmitter <\/h3>– With very inexpensive transistors …… VE2DG 20

The Mini Monitor<\/h3>– Every ham should have one …… W3UZN 22

Audio Test Amplifier<\/h3> – This is very useful too …… W9SEK 24

The Chicken Method<\/h3> – But aren’t we all chicken? …. K4ZZV 26

A Tubeless VFO for VHF<\/h3> – An old idea but a good one …… W1DFS 28

A Toroidal Multi-band Tuner<\/h3> – MBT’s have hundreds of uses …… W6SFM 30

The Perfect Squelch<\/h3> – Very simple tone-control squelch …… W5VCE 36

A Digital Readout VFO<\/h3> – It’s linear within 2 kHz and designed for 5-5.5 MHz …… WA9AXX 38

A 50 kHz Calibrator<\/h3> – Fine for those old surplus receivers …… W6GXN 42

Junk Box Pre-amplifier<\/h3> – Perk up your old receiver at no cost …… WA4ZQO 46

The Heath SB-100<\/h3> – Heath’s new HF transceiver works very well …… K2EQB 50

High-frequency Power<\/h3> – Don’t throw away that 400 Hz generator! …… WA6NlL 54

Tech Schools for Ham Training?<\/h3> – They’re good for commercial training too …… W0RA 58

The Knight TR-106 and V-107<\/h3> – Knight’s new 6m transceiver and VFO make a nice pair …… WA1CCH 62

A Curtain Going Up<\/h3> – Why not use a Bruce curtain and work more DX? …… W2EEY 66

Another Look at the Like-New Circuit<\/h3> – A few changes make this good circuit even better …… W2DXH 72

Gus: Part 14<\/h3> – Gus goes to Aldabra and around the U.S.A …… W4BPD 76

Coaxial Connector Handbook<\/h3> – Part two of WA6BSO’s series on coaxial systems discusses the types and uses of coax fittings …… WA6BSO 93
\n
\n

73 Ham Radio Today Issue September 1966<\/a>
<\/h2>\n

Compact Six and Two Transmitter<\/h3> – Here’s a very clever 60 watt rig; easy to build too …… K6RIL 6

Poorboy Mark II Quad<\/h3> – A simple light three-band quad …… K4USK 14

5 dB Gain on 75m Mobile<\/h3> – Increase your mobile signal at low cost …… W3BTQ 20

Accurate VHF Frequency Measurements<\/h3> – Use your BC-221 for high accuracy on two meters …… W5WGF 22

Add SSB AGC to Your Receiver<\/h3> – It’s not hard or expensive …… W1OOP 26

Ultimate Station Control<\/h3> – You mean you’re using a 89 cent knife switch? …… W2AJW 30

Match Box Tuner<\/h3> – W6BLZ’s version of a Johnson antenna tuner …… W6BlZ 38

Two Transistor Testers<\/h3> – One simple the other simpler. Both work well …… W6AJF 4

Transistor Voltage Regulator<\/h3> – Need 9 to 28V at 10A? …… WB6MOC 46

A Visit to The R.L. Drake Company<\/h3> – A short tour of their factory …… W0PEM 50

Try Homebrewing Now<\/h3> – It’s not hard or expensive …… WB2JQC 5

Diodes for OT’s and Beginners<\/h3> – There’s no reason not to understand them …… W2DXH 54

Two Meter Repeater<\/h3> – Even if you don’t need a repeater this is interesting …… W5KPZ 58

Complete Overload Protection<\/h3> – This one’s pretty original …… W4ZUS 66

Heathkit HM-15 SWR Meter<\/h3> – Ken likes it …… W7IDF 68

A Pox on Your Junk Box<\/h3> – Maybe some people shouldn’t build …… WA6JNI 70

Drafting for the Ham Writer<\/h3> – This article contains charts of our schematic symbols …… K0EFC 72

Lafayette HA-650 Transceiver<\/h3> – Six meters-portable and carefree …… WA1CCH 78

Conar 800 TV Camera Kit<\/h3> – Like to get on ham TV inexpensively? This’ll help …… W3WTO 82

Gus Part 15<\/h3> – Gus continues his visit to the Seychelles …… W4BPD 86

Coaxial Accessories Handbook<\/h3> – The third part of Jim’s series on coaxial systems covers antenna tuners baluns switches relays dummy loads SWR bridges and attenuators …… WA6BSO 93
\n
\n

73 Ham Radio Today Issue October 1966<\/a>
<\/h2>\n

Integrated Circuits<\/h3> – How will they affect you? …… WA1CCH 4

EI Marrinero<\/h3> – An inexpensive eighty meter SSB transceiver …… W6BlZ 6

Two Tubes for Two<\/h3> – SSB on two with two tubes and a twenty meter transceiver …… K9EID 16

432 MHz Transmitting Converter<\/h3> – Not too expensive or hard to build …… K6RIL 18

A Two Meter FET Converter<\/h3> – Low-noise low-cost and low cross-modulation …… K6HMO 22

Electronic Thermometer<\/h3> – Make sure that your linear doesn’t cook …… K5ILG 26

Controlled Avalanche Silicon Rectifiers<\/h3> – There’s no need for those shunting capacitors and resistors …… W9EGQ 26

Telegraph Keys<\/h3> – Look what’s happened to them …… WA6CEZ 30

220 MHz Receiver<\/h3> – A super regenerative receiver for poor folks …… WB2EGZ 38

Ham TV Let’s Get Going<\/h3> – Part 1: Theory testing and receiving. Part 2 next month …… K3ADS 42

The Multical<\/h3> – A multi-purpose crystal calibrator …… K9VXL 48

Connectors for Surplus Tubes<\/h3> – Use those 2C39s and 4X150s you got so cheap …… K2ZEL 50

DX Vertical<\/h3> – Very simple very cheap very effective …… W0IFY 52

The Humidivox<\/h3> – Here’s a new idea for avoiding citations …… WA2IKL 58

Gus Part 16<\/h3> – After you read this you’ll won’t to move to Aldabra …… W4BPD 60

WTW and You Mr. DX’er<\/h3> – And the WTW countries list …… W4BPD 66

The Future of the 10 Meter Band<\/h3> – It’ll be coming to life in not too long …… Nelson 70

The WRL Duo-bander<\/h3> – Ralph likes it; two bands for 50 cents per watt …… W8QUR 74

The RF Discriminator<\/h3> – It’s little-known to hams but very useful …… K7DEP 78

AM vs. The Carrier<\/h3> – Here’s proof that a carrier is not affected by AM …… W7CSD 82

Propagation<\/h3> – How do you like our new propagation charts? …… Nelson 88

Zener Diodes<\/h3> – Here’s an excellent article that explains Zeners in detail. Tells you how to check and use surplus ones too …… W2DXH 108
\n
\n

73 Ham Radio Today Issue November 1966<\/a>
<\/h2>\n

80 Watts on Two Meters<\/h3> – A worthy successor to Bill’s 50 watts for 50 meters …… K1CLL 6

The Novice Class – Then and Now<\/h3> – How it’s changed over the years …… W7OE 12

Tuning the RTTY Signal<\/h3> – You can’t receive teletype if you can’t tune it …… W4EHU 16

A WWV Receiver for $5<\/h3> – Convert a simple transistor set to receive 2.5 MHz …… W2DXH 20

Streamlined Transistor Modulators<\/h3> – You can fully modulate without a transformer …… Thorpe 24

Ham TV Part 2<\/h3> – The conclusion of this excellent article …… K3ADS 26

High-voltage Power Supplies<\/h3> – An individualist’s thoughts on transceiver power …… K6ZGQ 30

VHF Antennas<\/h3> – Useful hints from one of VHF’s most respected hams …… W6AJF 38

The Minican<\/h3> – A soup can version of the Cantenna …… W6JTT 44

A Stable VFO for VHF or HF<\/h3> – Simple inexpensive and effective. Transistorized of course …… K6RIL 46

The X-beam<\/h3> – Two small V-beams give a Rhombic-like pattern …… W4TDI 50

Remove the Drudgery from Ham Radio<\/h3> – Clever but facetious I think …… WA2IKL WA2ZCH 54

The Humidivox<\/h3> – An original scheme to avoid certain FCC trouble …… WA2IKZ 58

A Disappearing Antenna<\/h3> – Now you see it; now you don’t …… W6DFT 62

Custom Decals<\/h3> – A real thriller …… W9SLM 66

A Simple C-r Bridge<\/h3> – Every ham needs a capacitance-resistance bridge …… WB6AFN 68

Down Range – AFETR<\/h3> – Life at missile-tracking stations doesn’t sound bad …… WA4NXC 70

The Second Requirement<\/h3> – Are you getting full output from your transmitter? …… WB2HAL 72

Heath SB-400 Modification<\/h3> – Use the SB-400 and SB-300 more effectively …… W4NJF K4ASU 74

The Heath GR-54 SWL Receiver<\/h3> – It’s a nice inexpensive general-coverage receiver …… W3UZN 78

Healthy Ham Clubs<\/h3> – Improve your club it’s not hard …… W6DDB 80

Gus: Part 17<\/h3> – Gus continues his visit in the Indian Ocean islands …… W4BPD 94

Ham Microwave Propagation<\/h3> – Important information for the ham interested in experimenting in our fascinating microwave bands …… WA6PZR 98

WTW Progress Report<\/h3> – When are you going to join the growing list of WTW winners? …… W4BPD 106
\n
\n

73 Ham Radio Today Issue December 1966<\/a>
<\/h2>\n

Transistor Power Supplies<\/h3> – Useful information on low-voltage DC supplies …… W6GXN 10

The Sideband Escalator<\/h3> – Have you tried SSB speech clipping? …… W6TAQ 16

A Ham Electronic Counter<\/h3> – Determine your frequency the modern way …… K7UDL 20

The Novice Pair<\/h3> – Build a practical modern novice station …… W1JJL 28

A Lab-type Power Supply<\/h3> – Regulated low-voltage output; PC construction …… W6GXN 38

QRZed the YL<\/h3> – The frustrations of an YL’s husband …… WA6JNI 42

Climbing the Novice Ladder<\/h3> – Part 1: The novice bug bites …… W7OE 46

A Simple HF Linear<\/h3> – It’s not fancy but it works well …… W7CSD 50

The Heath SB-610<\/h3> – Jim likes Heath’s new monitor scope …… W1DTY 54

An IC Calibrator<\/h3> – Here’s a modern marker generator …… W6GXN 58

LORAN<\/h3> – The Interloper on 160 …… W2IKZ 62

PAK<\/h3> – The portable automatic keyer …… K3QKO 66

Make the Most of Magazines<\/h3> – Bind your ham magazines yourself …… W6DEG 70

A Coax Coax Antenna<\/h3> – Here’s a practical coax antenna …… W1DCG 74

Cheap DC-to-dC Conversion<\/h3> – Six gives you twelve …… WA2IKL 78

Storage Batteries<\/h3> – Use storage batteries properly …… W6JTT 82

Return to Navassa<\/h3> – Photos from Don’s recent DXpedition there …… KC4AF 86

Parabolic Antenna Design<\/h3> – Extensive discussion of parabolas and illumination …… K6MIO 90

Gus Part 18<\/h3> – Gus visits the Chagoes …… W4BPD 98

AM-to-fM Conversion<\/h3> – Use your Gooney Box on FM …… WA5CJG 100

Goad Hand Sending<\/h3> – Some good tips from an old CW hand …… VE7CT 102

Now You See It<\/h3> – An invisible mobile installation …… WA6DLI 102
\n
\n

73 Ham Radio Today Issue January 1967<\/a>
<\/h2>\n

An IC Crystal Calibrator<\/h3> – 10 and 100 kHz markers output; costs $13 …… KlDCK 6

Transistor Converter Notes<\/h3> – Some new developments in Frank’s popular VHF converters …… W6AJF 10

A kW with the Amperex 6KG6<\/h3> – A very straight forward SSB grounded-grid linear …… W7CSD 14

FET Transconductance Tester<\/h3> – A simple yet effective checker; a scoop …… W1DTY 16

Climbing the Novice Laddar: Part 2<\/h3> – Joe starts a homebrew project …… W7OE 20

The QRZ Machine<\/h3> – Something for the DXers …… W6MUR 26

Ham TV Converter<\/h3> – Three transistors are all you need …… PA0BVO 30

A Silect Six Meter Converter<\/h3> – It uses a FET RF amp and etched circuit construction …… W5SJN 32

Autostart RTTY Gear<\/h3> – A generator and converter for VHF use …… W6AYZ 34

VOM Transistor Tester<\/h3> – It uses about five components …… Thorpe 38

Low-power Attenuator for Ham Use<\/h3> – They’re cheap yet useful to 450 MHz …… WB6AIG WA6RDZ 40

A FET S-meter<\/h3> – Another good use for inexpensive FETs …… W6GXN 42

Unwanted Feedback<\/h3> – A lucid discussion from one of 73’s top authors …… W2DXH 46

Equipment Protection<\/h3> – Are you taking adequate steps to protect your gear? …… K5JKX 50

Etched Circuit UHF Dipmeters<\/h3> – 130-480 MHz; very clever …… W1JJL 54

Hamming VK9-style<\/h3> – Like to go DXpeditioning on a far island? …… VK9TG 58

SINPO and SINPFEMO<\/h3> – Another approach to signal reporting …… DJ0HZ 62

432 MHz Antenna Filter<\/h3> – A coaxial filter for the 70 cm band …… W6AJF 64

Six Meter Final Amplifier<\/h3> – A useful 100 watt amplifier for low-power rigs …… K9EID 65

73 Reviews the Drake 2-NT and 2-c<\/h3> – A good 100 watt CW transmitter and hybrid receiver …… W1DTY 66

A Simple Voltage Calibrator<\/h3> – Jim tells why your meters aren’t perfect and how to live with them …… W2DXH 70

The Link<\/h3> – A signal grabber for two …… W6HGX 78

Techniques in Tone Signaling<\/h3> – Tones can be very useful for hams …… WB6MOC K6YTY 82

The Vanguard 501 Camera<\/h3> – It’s an excellent quality inexpensive TV camera …… WA1CCH 86

The Shackcom<\/h3> – A simple ham intercom …… W8MQW 87

Gus: Part 19<\/h3> – Is a flat Coke better than none? …… W4BPD 88

A Little About Noise<\/h3> – A technical article for those who really want to understand noise …… K6ZGQ 92

The Knight-kit KG-640 YOM<\/h3> – A fine taut-band VOM at a good price …… W1DTY 102

The Motorola HEP-line<\/h3> – Good available inexpensive transistors at the corner radio store …… WA1CCH 104

The Knight-kit TR-107<\/h3> – Knight’s new two meter transceiver looks good …… KlRA 105

What’s New For You?<\/h3> – 73’s new monthly technical column …… WA1CCH 109
\n
\n

73 Ham Radio Today Issue February 1967<\/a>
<\/h2>\n

Getting Acquainted With Integrated Circuits<\/h3> – Here’s practical information on using inexpensive ICs …… Thorp 6

Using Low-cost FET’s on Six<\/h3> – Two $1 FETs and a cheap PNP give 2 dB NF and high overload resistance …… W6AJF 11

Low Cross-modulation on Two<\/h3> – A $ 1 FET makes an excellent mixer on two …… W6AJF 14

The 30P1 Linear Amplifier<\/h3> – A peasant’s 30L1: Four 811As …… W1DBN 18

An Improved Multiplier for UHF<\/h3> – Get enough local injection on 1296 MHz …… W6OSA 22

A Broad-band 80 Meter Vertical<\/h3> – 3.5 to 4 MHz with no adjustments …… VE1TG 26

A Reliable UHF Directional Coupler<\/h3> – Here’s a UHF bridge you can trust …… WA6SXC 30

A Solid-state Antenna Relay<\/h3> – Fast low-loss high-power and efficient …… K2IYC 34

Video Camera Tubes<\/h3> – There are lots of different types …… WB2GYS 38

A Semi-precision Variable Capacitor<\/h3> – It’s accurate to 1 pF and uses a component that’s in almost every junk box …… W1DTY 42

Down with the Rotator<\/h3> – A cheap useful scheme for small beams …… W3BTQ 47

Mobile Logs – Personalized<\/h3> – Save time and trouble in mobile logging …… WB6KFI 48

Add a Crystal Filter to Your Receiver<\/h3> – For less than $10 …… W1USM 50

A Reactivator for the Semiconductor Activator<\/h3> – In other words a battery charger …… K6EAW 52

The Ancient Marriner<\/h3> – An antenna tuner for coax-fed beams …… W6BLZ 54

Climbing the Novice Ladder<\/h3> – Part 3 …… W7OE 56

Portable Operation Without Tears<\/h3> – Useful hints for the prospective portableer …… K3LNZ 60

Practical Tips on Transistor Transmitters<\/h3> – You won’t want to miss this one unless you’re an AO …… K0CJF 64

UHF-microwave Phased-locked Oscillator<\/h3> – Stable within less than 1 Hz at 6 GHz! …… K3OJK 68

73 Tests the Eicocraft CPO<\/h3> – Eico’s new line of inexpensive kits looks like fun …… 78

100 Watts on Two With Compactrons<\/h3> – Uses two 7894s in push-pull …… K1CLL 80

The Poor Man’s Occasional Antenna<\/h3> – Cheap dirty and effective …… W7CSD 84

Rewinding the Power Transformer<\/h3> – It’s not hard as this article explains …… WB2PTU 88

The Drake L-4 Linear Amplifier<\/h3> – Drake’s new linear is very nice …… WlDTY 90

The Carrier Again<\/h3> – Part 2 of “AM vs. the Carrier” …… W7CSD 94

A Simple Current Controller<\/h3> – Very simple and cheap …… K5JKX 96

Equalizing AFSK Tones<\/h3> – Some notes for RTTY’ers …… K8ERV 96

The International Crystal SBX-9 and SBA-50<\/h3> – SSB exciter on 9 MHz and mixer to six meters …… W1DTY 100

The National 200<\/h3> – National’s inexpensive new transceiver is attracting much attention …… W1DTY 104

An Universal Code Monitor<\/h3> – A clever idea for a simple monitor …… K9VXL K9CLH 108

Gus: Part 20<\/h3> – A crisis in the Indian Ocean! …… W4BPD 110
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\n

73 Ham Radio Today Issue March 1967<\/a>
<\/h2>\n

A Digital Identification Generator<\/h3> – Send your call automatically with no moving parts …… K6ZCE 6

SSB Proof-of-performance<\/h3> – How does your station perform? …… K6YKH 14

A Non-tiring CW Monitor<\/h3> – Pure single sine waves are monotonous. Try this instead ……W1DCG 18

Seven Elements on Twenty<\/h3> – On a 60′ boom …… WA4WWM 20

Climbing the Novice Ladder<\/h3> – Part 4: The code is almost conquered …… W7OE 24

Going RTTY: Part 4<\/h3> – Frequency shift keying …… W4RWM 30

A Solid-state Product Detector<\/h3> – Uses two cheap transistors …… WB6CHQ 32

AMCOM: Amateur Mobile Communications<\/h3> – The Phil-mont Radio Club’s emergency stations …… K3CEE 36

The Slide Rule Made Easy<\/h3> – It is easy too …… W1MEG 40

How to Make Better Panels<\/h3> – Jim’s suggestions work. I tried them …… W2DXH 46

An IC Keyer<\/h3> – Here’s a different integrated circuit keyer …… W5FQA 50

Edison: The Fabulous Drone<\/h3> – Was Edison really a great genius? …… Elkhorne 52

A Simple RF Voltmeter<\/h3> – Make a very useful piece of test equipment. It’s low in cost …… W1DTY 56

SDRAWKCAB Power Supply<\/h3> – Guess what this is? …… K1UBA 62

A Panadapter Converter<\/h3> – It helps you get decent patterns on your panadapter …… WB2CCM 64

73 Useful Transistor Circuits<\/h3> – If you’re a builder you’ll like this one. It’s a fantastic collection of useful simple circuits using transistors for all sorts of receiving transmitting and test equipment …… W1DTY 65

The Importance of Being Grounded<\/h3> – It is important …… WA6KLL 98

Gus: Part 21<\/h3> – This month Gus visits darkest Africa …… W4BPD 100

The Waters Dummy Loads<\/h3> – One is plain; the other a wattmeter …… W1DTY 106
\n
\n

73 Ham Radio Today Issue April 1967<\/a>
<\/h2>\n

The Super Duper Super<\/h3> – It may not be a super but it’s sure super duper …… WN1ECCH 6

A Toroidal VFO<\/h3> – An excellent VFO with many interesting mechanical features …… W4BRS 10

Transceiver CW Filter and Monitor<\/h3> – Improve your transceiver’s CW capability …… WlDCG 14

Dreadful Ham Cliches<\/h3> – Special for April …… K3SUK 16

The Converter Converter<\/h3> – Stick it between your UHF converter and your low-frequency receiver …… W1OOP 18

The Ratnick Two’er<\/h3> – It’s a simple transmitter for local contacts …… WA2RAT 22

The Clinic<\/h3> – More first-of-april nonsense …… K3SUK 24

Cardboarding<\/h3> – An interesting approach to experimenting and records ……W6FTA 26

Buried Antennas<\/h3> – They don’t work too well but they may be the best you can do …… W1DCG 34

A Transistor Wien Bridge<\/h3> – 20-200 000 Hz with a simple easy-to-build circuit …… W6GXN 36

Ham vs. Ham<\/h3> – We hope these things don’t make you MAD …… K3SUK 40

Air Mobile<\/h3> – Like to try operating from an airplane? …… W3ZP 42

FM Subcarrier Generator<\/h3> – A simple way to add sound to your TV transmissions …… W6ORG 46

James Dandy Diode Tester<\/h3> – Check your diodes very quickly with this simple instrument …… W2DXH 50

Some Commandments for DXing<\/h3> – CQ’s new DX editor offers some excellent hints …… K4IIF 58

High Frequency Single Side Band Transceivers Receiver-exciters and Linear Amplifiers for Hams<\/h3> – Here’s a complete listing of all high frequency SSB gear by comparison table. This special section also includes a photograph and description of each unit …… W2DTY 64

Ferromagnetic Beads<\/h3> – Tiny ferrite beads can make excellent chokes from plain wires …… W6SFM 84

A Canadian Assault on FP8<\/h3> – A DXpedition-vacation to Ste. Pierre …… VE1ADH 86

he Clegg 66’er<\/h3> – Squires-sanders mate to the 22’er …… W1DTY 90

Climbing the Novice Ladder: Part 5<\/h3> – A stroke of luck for Judy …… W7OE 98

Gus: Part 22<\/h3> – If you enjoy this series you should get the DX’ers magazine …… W4BPD 106
\n
\n

73 Ham Radio Today Issue May 1967<\/a>
<\/h2>\n

The Quad-quad-quad<\/h3> – Sixteen quads on a single mast for 144 and 432 …… VE3DNR 6

The Expanded Quad<\/h3> – More gain and directivity on 10 15 and 20 …… WA5KXY 16

An Inexpensive DX Antenna<\/h3> – A low-cost two-element quad for DXer’s ……WA6WUI 20

The Miniquad<\/h3> – A practical small size quad for twenty meters …… WA2APT 23

A Full-size 7 MHz Rotary Cubical Quad<\/h3> – For hams with big backyards …… K6DDO 26

Experiments with Quad Antennas<\/h3> – Optimum designs for HF and VHF quads …… IIRR 32

The Half-quad Antenna<\/h3> – Half a quad is better than none …… W0SII 35

The Three-element Quad<\/h3> – For cracking DX pileups on 20 meters …… K8YIB K8DYZ 38

A Light Four-element Quad for 20 Meters<\/h3> – Lightweight but potent …… K0UKN 41

Tilt That Quad at a Dollar a Foot<\/h3> – Forty feet for $39.75 …… W7UXX 46

An Easy-to-erect Quad<\/h3> – The “Down-under” approach to building quads …… VK5BI VK5VB 50

Quad Bibliography<\/h3> – Twenty years of quad antennas …… W1DTY 53

A FET VFO for 80 Meters<\/h3> – High-stability with FET …… W1DTY 56

Tube Symptom Troubleshooting<\/h3> – If you must use vacuum tubes …… WA0NEA 61

A 200 Watt Dummy Load for $2<\/h3> – For low-interference tuning …… W2OLU 66

The Easy Way to Decibels<\/h3> – But not completely without math …… K3PXT 69

The Highflyer<\/h3> – A complete homebrew receiver for 80 through 10 …… W6BLZ 72

Geometric Circuit Design<\/h3> – Designing complex circuits with a ruler and protractor …… Bradford 82

A Field Effect Transistor Converter<\/h3> – Low cross-modulation on 10 15 and 20 …… K6DQB 86

WWV on the Mohawk<\/h3> – Without a lot of work …… K8KWQ 89

High-pass Receiving Antenna Filters<\/h3> – Eliminating spurious signals in HF receivers …… K6KA 90

Climbing the Novice Ladder: Part 6<\/h3> – Joe and Judy take the code test …… W7OE 97

The Heathkit HW-32A 20 Meter Transceiver<\/h3> – One of Heath’s new single-banders …… W1DTY 102

Gus: Part 23<\/h3> – A hot trip through darkest Africa …… W4BPD 106
\n
\n

73 Ham Radio Today Issue June 1967<\/a>
<\/h2>\n

The Whole of the Doughnut<\/h3> – Toroidal coils for kilowatt amplifiers …… W4BRS 6

A 1296 Grid Dipper<\/h3> – 1050 to 1320 MHz with a converted APX-6 …… W1DTY 16

Using FETs in the Command Set Transmitter<\/h3> – Results in a very stable VFO …… K3LCU 23

The Dichotomy of a Tube Man<\/h3> – Putting on FET in the BC-906 frequency meter …… W5SOT 26

Converting the Swan 120 to 6 Meters<\/h3> – Be prepared far the six meter openings this fall …… K6RIL 28

Military Quartz Crystals for the Radio Amateur<\/h3> – A survey of surplus crystals …… W0HYB 36

Converting the BC-728<\/h3> – A fine superhet for 160 80 and 40 meters …… 38

Photographing Your Electronic Gadget<\/h3> – Must reading for authors …… VE3DAN 42

Panoramic Display from the AN\/aPA-38 Indicator<\/h3> – Low-cost panoramic reception …… W6JTT 46

RDR Receiver Conversion<\/h3> – Crystal controlled channels on 220 MHz …… K3HIL 48

Build a 40 Meter Rotable Dipol<\/h3> – Maximum effectiveness on 40 meters with a shortened dipole …… WB2GZL 50

Operating the BC-611 Walkie-talkie<\/h3> – Great for short distances over flat terrain …… W1MEG 55

A Poor Man’s Transmitter Cabinet<\/h3> – Using old TV cabinets …… WA4RHT 56

Micro-logic for Non-logical Users<\/h3> – How to use digital integrated circuits in ham projects …… W6GXN 58

Proportional Transistor Control of AC Circuits<\/h3> – Solid-state replacement for a variable transformer …… Ives 66

Phone Patching – More Light in a Gray Area<\/h3> – From the legal point of view …… K8BLL 69

The Heathkit SB301 Receiver<\/h3> – One of Benton Harbor’s newest releases …… W2JDL 76

Face-lifting the TS34\/aP Oscilloscope<\/h3> – A great scope for less then twenty dollars …… K6GKX 110

Climbing the Novice Ladder: Part 7<\/h3> – Judy and Joe take the written test …… W7OE 111

Ham Public Service and Broadcast Stations<\/h3> – Another approach to better public relations …… K4HKD 117

Gus: Part 24<\/h3> – Sir Gus tours ZS-land …… W4BPD 119
\n
\n

73 Ham Radio Today Issue July 1967<\/a>
<\/h2>\n

North of the Border<\/h3> – Amateur radio in Canada …… VE1TG 6

Suppressed Carrier Amplitude Modulator<\/h3> – Double-sideband adapter for AM rigs …… VE7PQ 10

A Homebrew 50-foot Tower<\/h3> – Low-cost self-supporting tilt-over construction …… VE6KS 12

Simplified Transistor Design for the Ham<\/h3> – It’s easy when you know Ohm’s law …… VE1ADH 14

VE0 Ahoy<\/h3> – Canadian maritime-mobile stations …… VE1TG 22

World’s Fair – 1939<\/h3> – And the W2USA radio club…… Staff 30

Plain Ground Plane: Antenna<\/h3> – An economical antenna for working DX …… VE7BBM 36

The Hybrid G4ZU Superbeam<\/h3> – A very effective three-band beam for 10 15 and 20 …… VE3AHU 38

A Slow-scan Television Monitor<\/h3> – An economical design using surplus components …… W9VZL 42

FET Pre-amplifiers for 144 and 432 MHz<\/h3> – 2.5 dB noise figure on 432 …… W6OSA 48

A 30 MHz IF Strip Using Integrated Circuits<\/h3> – 85 dB gain in a small package …… W7AKS 52

An Un-guyed Vertical Antenna<\/h3> – Very useful for small backyards …… W6JTT 56

Two Cheap Crank-knobs<\/h3> – Great arm savers for wide tuning ranges …… VE3BUE 58

The Tri-amp<\/h3> – Versatile audio test unit …… K6UGT 61

Wide-range VHF-uHF Dipper<\/h3> – 130 to 1 300 MHz with transistors …… K1CLL 64

A Few Tower Hints<\/h3> – Protecting your rotator against the weather …… WA1ABP 70

Monitoring With an Oscilloscope<\/h3> – Check the quality of your transmissions …… W0OPA 72

The Basic Desk<\/h3> – A neat operating desk for the itinerant operator …… W0QOJ 76

Is Rock Bounce Practical?<\/h3> – Mobile experimenters take note …… G3BID 78

Moonray<\/h3> – Amateur radio on the moon …… W1DTY 80

Transmit Control With the 32S-1 Receiver<\/h3> – Without modifying the receiver …… W6EUV 82

Project: High School Amateur Radio Club<\/h3> – How to get one going and maintain it …… WA0NDV 84

Heath HR-10 Modifications<\/h3> – Increased sensitivity and selectivity …… VE3FYL 86

Glub Glub I’m Drowning<\/h3> – In a sea of noise …… WA0NQL 88

The Galaxy V Mark 2<\/h3> – A review of Galaxy’s newest transceiver …… W1DTY 94

The Heathkit SB401 Transmitter<\/h3> – Benton Harbor’s new companion to the SB301 …… W2DJL 98

Climbing the Novice Ladder: Part 8<\/h3> – Judy and Joe approach the pinnacle of achievement …… W7OE 102

Gus: Part 25<\/h3> – Capetown South Africa …… W4BPD 108
\n
\n

73 Ham Radio Today Issue August 1967<\/a>
<\/h2>\n

Push-pull Class-b Grounded-grid Linear<\/h3> – An unusual if not new approach to high power …… VE3AAZ 6

A Frequency Calibrator for the VHF Man<\/h3> – Finding yourself on 144 and 432 MHz …… W6GXN 12

The Semi-rTTY System<\/h3> – Solid-state AFSK oscillator and terminal unit …… K0JXO 20

Mobile Power – The Alternator<\/h3> – Their use and abuse …… W9NLT 24

Visual Monitoring of Remote Carriers<\/h3> – What does your CW signal look like? …… W3RMI 30

Power Losses and High SWR<\/h3> – SWR and its side effects …… K2DXO 34

Using Toroids in Ham Gear<\/h3> – How to wind toroidal inductors and use them …… VE1ADH 36

Solid-state Alternator Regulator<\/h3> – High-performance at moderate cost …… K6UAW 40

The Great Dipper<\/h3> – Transistor emitter-dipper for the VHF’er …… WA0AYP 42

A 20 Amp Power Supply<\/h3> – 20 amps for 20 dollars …… WA4SAM 48

X Marks the Spot<\/h3> – A simple “no-holes” mobile antenna mount …… WA3AJD 50

Go-go-mobile<\/h3> – A low-cost mobile antenna for 40 20 15 and 10 …… W6IEL 52

The Front-to-back Ratio of an Automobile<\/h3> – Radiation patterns of different antenna mounts …… G3BID 56

Beginner’s Beam for 10 Meters<\/h3> – Get ready for the band openings this winter …… VE1TG 60

Simplified Printed Circuits<\/h3> – Making printed circuits at home …… K5IRP 65

Designing Transistor Oscillators<\/h3> – If you’ve been having trouble designing transistor oscillators to fit your requirements this article may be the answer. Most of the math has been eliminated by several labor-saving nomographs …… W1DTY 66

Gus: Part 26<\/h3> – Tristan de Cunha …… W4BPD 84

Climbing the Novice Ladder: Part 9<\/h3> – Judy and Joe receive their licenses …… W7OE 102
\n
\n

73 Ham Radio Today Issue September 1967<\/a>
<\/h2>\n

The Synchronous Detection Process<\/h3> – If you must use AM get the most out of it …… W3DUQ 6

A 160 Meter Sidewinder<\/h3> – A sideband package for the low-band …… W6JTT 12

Building Blocks<\/h3> – A 12 to 18 MHz receiver for VHF converters …… WB2EGZ 17

VSWR Supreme<\/h3> – A compact VSWR unit that can be built into your rig …… W4BRS 20

Dual-band Use of Single-band Beams<\/h3> – Get the most use out of those antennas …… W2EEY 26

Grounded-grid Filament Chokes<\/h3> – How to design and wind your own …… W6RET 30

200 Hertz CW Filter<\/h3> – Maximum selectivity with telephone coils …… K7UDL 34

Observations of Note by a VHF Addict<\/h3> – Hilltopping in Southern California …… WB6JLC 37

Getting a Start in Amateur Television<\/h3> – Off on the right foot …… WA2EMC 40

A Compact Linear Amplifier<\/h3> – 500 watts in a small package …… VE2AES 44

Cathode Keying Filter<\/h3> – Getting rid of key clicks …… W6BLZ 48

A Simple Resistance Bridge<\/h3> – Precision resistance measurement at low-cost …… VE3AHU 51

Compact Heat Sinks<\/h3> – Using copper pipe caps for cooling semiconductors …… Ives 52

Evaluating Antenna Feed Systems<\/h3> – Using time domain reflectometry …… W7QAG 56

Cheapskate’s “On the Air” Sign<\/h3> – Eliminating in-shack interference …… WN3EWV 62

Relay Energization in Fixed and Mobile Equipment<\/h3> – Just what the title says …… VE4RE 64

How to be a Ham – By Really Trying<\/h3> – It isn’t hard if you try …… VE3GLX 66

Do-it-Yourself Mobile Mount<\/h3> – Nice looking but simple floor mount …… W6APE 68

Washing Out Your (Antenna) Shorts<\/h3> – Keep road salt and water out of your mobile antenna …… W3RZD 70

A Polarity Sensitive Meter for the Sightless<\/h3> – Used for checking diodes capacitors and resistors …… WA2BCX 72

Climbing the Novice Ladder: Part 10<\/h3> – FN offers Judy and Joe some sage advice …… W7OE 74

Trindade Island DXpedition<\/h3> – The DX-capades of PY2BZD\/pY0 …… PY2BZD 82

Gus: Part 27<\/h3> – Gough Island …… W4BPD 84

DX’ing<\/h3> – How to get the most out of chasing DX …… W2NSD\/1 88

The Knight-kit KG-663 Low-voltage Power Supply<\/h3> – An excellent power supply for the ham shack …… W1DTY 94

Heathkit SB630 Control Console<\/h3> – Handsome mate to the SB301 and SB401 …… W2DJL 96
\n
\n

73 Ham Radio Today Issue October 1967<\/a>
<\/h2>\n

Incentive Licensing<\/h3> …. 2

The 2Q Receiver<\/h3> – 22 transistors; FETs in the front-end …… W5ETT 8

The Really Rugged Rotator<\/h3> – For big arrays in bad weather …… VE1TG 14

Designing Permeability-tuned Coils<\/h3> – Simple and accurate …… Marovich 20

A FET Converter for 40 and 160<\/h3> – Beats vacuum tubes …… K6DBQ 26

West Coast VHF Antenna Measuring Contest<\/h3> – At the 1967 VHF Convention in Fresno …… W1DTY 30

A Slow-scan TV Picture Generator<\/h3> – Another simple approach to slow-scan …… K7YZZ 34

VHF Log Periodic Antennas<\/h3> – Plus a fully designed LP for 432 MHz …… K4GYO 40

The Dual-gate FET<\/h3> – Using the 3N126 in a SSB generator …… W1OOP 48

Getting the Most Out of Your Receiver<\/h3> – Read and heed …… W0HJL 50

The Silent Shepherd<\/h3> – Emergency at midnight …… W6OQY 52

Torticollis and All That Jazz<\/h3> – A simple pain in the neck! …… WB6QOT 57

All-band Rotatable Dipole<\/h3> – 80 through 10 with one rotatable antenna …… WB2WIK 60

Simple Gamma Match Capacitor<\/h3> – Not a new idea but a good one …… K0UTX 64

Personalized QSLs for Greater Returns<\/h3> – Are you having trouble getting the QSLs for WTW? …… W6NIF 66

Pioneer DX<\/h3> – Chasing DX in the early days …… W7OE 70

DX’ing<\/h3> – The right approach helps …… W2NSD 74

Gus: Part 28<\/h3> – Sir Gus lands on Bouvet …… W4BPD 85

The Knight-kit T-175 6\/10 Meter Linear<\/h3> – High-performance for the band openings this winter …… W1DTY 90
\n
\n

73 Ham Radio Today Issue November 1967<\/a>
<\/h2>\n

Integrated Circuit Frequency Counter<\/h3> – A 100 kHz counter for less than $50 …… W0LMD 6

2 Kilowatt PEP for Six Meters<\/h3> – A complete transverter for 50 MHz …… K6RIL 12

A Pulse Generator for the Amateur<\/h3> – Versetile test equipment for the shack …… W6GXN 20

Mighty Four on Six<\/h3> – Low-cost transistor transmitter for six meters …… K9VXL 24

Incentive Licensing<\/h3> – Complete story on our new regulations …… W1DTY 28

Feeding the Cat Underwater<\/h3> – Experiments with underwater radio propagation …… K6BIJ 34

Mobile Antennas for the Non-mobileer<\/h3> – Using the ring-radiator antenna …… W2EEY 38

Why Abuse Semiconductors?<\/h3> – The care and feeding of transistors and diodes …… VK7RG 42

DC VTVM<\/h3> – A sensitive high-impedance VTVM of simple design …… W2DXH 53

220 Wavemeter<\/h3> – Find your way around the forgotten band …… WA2TOV 60

Choosing Accessories for the Novice Ham Station<\/h3> – What do you need besides a transmitter and receiver? …… W7OE 62

Trim for Ten<\/h3> – Adding bandspread to your loading capacitor …… DL5AF 68

The Longest QSO<\/h3> – A new world’s record …… WA3GEV 70

Death of Amateur Radio<\/h3> – Food for thought …… WA8FVS 73

Spook Up Your Club’s Civic Activities<\/h3> – Goblin patrol …… K4HKD 76

Simple Modifications for the HW-12 22 and 32<\/h3> – Greater frequency coverage …… DL4XO 80

Project Milk Wagon<\/h3> – You two can form a club …… 3C3FKY 82

The Drake MN-4 Matching Network<\/h3> – Great for multi-band operation with single-band antennas …… W1DTY 88

The Omega-t Antenna Noise Bridge<\/h3> – A new approach to antenna impedance measurements …… W1DTY 90

The Comdel CSO-11 Speech Compressor<\/h3> – More punch in the pileups …… K1RA 94

Six Hours with Blintz’ DXpedition<\/h3> – Journey to Jordan …… 4X8HW 98

Gus: Part 29<\/h3> – Bouvet Island …… W4BPD 103
\n
\n

73 Ham Radio Today Issue December 1967<\/a>
<\/h2>\n

250 kHz to 29.75 MHz Stabilized Converter<\/h3> – A phase-locked receiver with 500 kHz bands …… K5LLI 6

Some Experiments With Stacked Beams<\/h3> – Getting more gain out of your array …… VE1TG 14

Simple Antenna Mount for Satellite Work<\/h3> – An el-ez antenna mount using two rotators …… W4HJZ 20

Strong Signal Interference<\/h3> – AGC modifications for improved cross-mod performance …… K6KA 22

Charging Dry Batteries<\/h3> – An approach to longer-lived primary cells …… WA6NIL 26

A Forty-meter Vertical Array<\/h3> – Lots of gain for 7 MHz DX’ing …… K8DOC 30

Hamateur Acoustics<\/h3> – One man’s sound is another man’s noise …… W3RZD 34

A Workbench Clutter Filter<\/h3> – Get rid of that mess on your work bench …… WA6UVS 38

General Information About Amateur RTTY<\/h3> – What it’s all about …… WA0OBJ 42

Computer Card Construction<\/h3> – Use those surplus printed-circuit computer cards …… K1EUJ 48

Station Accessory Control Unit<\/h3> – Put all your station controls in one neat box …… K6ZHO 52

A True Parasitic Monitor<\/h3> – A no-power CW monitor …… K4FQU 56

The Mini-sWR Bridge<\/h3> – Perfect for tuning up antennas …… W2EEY 60

Yes Old Timers There is a Santa Clause<\/h3> – I’d mark that true on a true-false test …… W0HJL 62

The Contest Caper<\/h3> – How to win contests…… K8KFP 66

Jean Shepherd WB4DOH<\/h3> -the piano protege …… Roberts 79

Bmmmfff!<\/h3> – The information explosion …… G3KPO 83

The Waters Band-adder Antenna<\/h3> – 20 15 and 10 with a 75 meter mobile antenna …… W0HJL 84

Hallett Signal Saver<\/h3> – Top-notch shielded ignition system …… WB6KFI 86

Gus: Part 30<\/h3> – Return to South Africa …… W4BPD 91
\n
\n

73 Ham Radio Today Issue January 1968<\/a>
<\/h2>\n

IC Square-wave Generator<\/h3> – Getting acquainted with Integrated Circuits …… WA4ZQO 6

Tuning In on Bonadio’s Satellites<\/h3> – Strange noises on the air …… W2WLR 10

Sideband Filters<\/h3> – The least understood pert of sideband gear …… WB2GYS 14

The Two Meter Groundplane as a Gain Antenna<\/h3> – Gain where the action is …… K6MVH 18

RF Insertion Amplifier for Two Meters<\/h3> – More drive for the final …… K1CLL 20

2 Elements Spaced a Quarter-wavelength<\/h3> – Simple beam antenna for 15 meters ……W2EYY 22

Wide-band Baluns the Easy Way<\/h3> – Multiband balun ….. K4ZZV 24

Hamming – The Navy Way<\/h3> – Deluxe morale booster …… K6GKX 26

Fire in the Hamshack<\/h3> – Are you ready? …… K4SEL\/dL5AF 34

Diode Circuits Handbook<\/h3> – Special insert 28 pages of diodes …… WA1CCH 1A

RTTY In Holand and Belgium<\/h3> – Europe on RTTY and where to look …… PA0VDZ\/oN8NC 64

The Wolverine<\/h3> – 100 watts on all bands …… W6BLZ 66

A Homebrew Operating Desk<\/h3> – A place for everything …… WB2WYO 74

Novice Data<\/h3> – Do’s and don’ts handbook for beginners …… W6DDB 88

Gus: Part 30<\/h3> …… W4BPD 114
\n
\n

73 Ham Radio Today Issue February 1968<\/a>
<\/h2>\n

An Integrated Circuit Electronic Counter<\/h3> – A useful piece of ham gear …… W1PLJ 6

How Come?<\/h3> – A good question …… W4YM 14

An Amateur Tries ICs<\/h3> – The uses of integrated circuits …… VE3DAN 16

100 kHz Thin-line Pulse Generator<\/h3> – Frequency standard with ICs …… W2DXH 24

The Nurture and Care of a Junk Box<\/h3> – Selective collecting …… W0HMK 30

How to Plan Your Own DXpedition<\/h3> – DXing in style and comfort …… W4PJG 34

How is Your Club Paper – Good or Bad?<\/h3> – Make the readers notice …… K6GKX 38

High-quality Hybrid Receiver<\/h3> – Restoring the lost art of homebrew …… VE1TG\/vE1ADH 42

Tips for the CW Contester and DX’er<\/h3> – From one of the great CW contesters …… KH6IJ 50

How to Publicize Your Club<\/h3> – Getting activities into print …… K4HKD 54

Technical Aid Group<\/h3> – Where to look for help …… 58

The Quartenna<\/h3> – How to shrink a Cantenna …… WA6OBH 64

Hydronics or Radio?<\/h3> – Underwater propagation …… VE7BS 66

Electronic Temperature Measurements<\/h3> – Determining temperature rise in components …… K6EAW 70
\n
\n

73 Ham Radio Today Issue March 1968<\/a>
<\/h2>\n

Narrowband Frequency Modulation<\/h3> – Using voltage variable capacitors …… WB2CPG 6

Transmitter Keying with Transistors<\/h3> – Solid-state project for the CW hound …… W6HEK 14

The Mini-mitter<\/h3> – The smallest transmitter? …… W7OE 18

Receiver Front-end Protection<\/h3> – Protection for the transistor receiver …… W6AJF 20

A Regulated DC Voltage Divider<\/h3> – Reducing voltage while maintaining regulation ……W5NPD 24

QSL Manager<\/h3> – How to alienate your postman …… W4NJF 26

160 Meter Flat-top Antenna<\/h3> – Long antenna on a short lot …… W3WPV 30

Go Ahead – Run Away to Sea<\/h3> – Make a vacation pay …… K4UDP 32

Operation Deep Freeze<\/h3> – 10 years in the Antarctic …… W6GKX 38

Crystal Shopping<\/h3> – Double duty for X’tals …… WA4UZM 44

Witching for Better Grounds<\/h3> – One for the skeptics …… W7CJB 46

The Ham<\/h3> – A view from the XYL …… Day 50

Getting the Most Out of Link Coupling<\/h3> – From the VHF point-of-view …… K1GBF 54

More on More Contacts From Within<\/h3> – Antenna hints for apartment dwellers …… K3RXK 54

S-9-manship<\/h3> – How to put a man down …… W6DFT 56

The RF Patch<\/h3> – Patch panel solution to an old problem …… W6JTT 58

73 Certificates<\/h3> – You’d be surprised how fast they move …… 60

Transceiving with an Outboard Receiver<\/h3> – Making the most out of the receiver …… WA2APT 62

A Ham’s Shack is His Castle<\/h3> – Wanna bet? …… W6LNG 64

Converting the TA-33 Jr. to a Full-sized 15 Meter Beam<\/h3> – A solution to the sun spot cycle …… K4ELB 78

The Scientific Method<\/h3> – Hoo-boy that smarts …… Foster 82

Getting You Higher Class License – Part 1<\/h3> – A new approach to studying theory …… Staff 92
\n
\n

73 Ham Radio Today Issue April 1968<\/a>
<\/h2>\n

The Vidicon Minicamera<\/h3> – Using low-cost high-quality semiconductors …… W8TYY 6

The Little Gem Fuse Tester<\/h3> – There’s still time to use this one April 1st …… W7CSD 15

Methods of Transceiver CW Switching<\/h3> – Six circuits to achieve easy CW operation …… W1DCG 16

The Polar Key<\/h3> – Homebrew keyer using inexpensive polar relay …… K4YWS 20

Checking Your VSWR Indicator<\/h3> – Are you sure your SWR bridge is trustworthy? …… W5EHC 22

Video Mixing Amplifiers<\/h3> – Producing a good composite video signal …… W8VCO 24

A Solid Dead Man<\/h3> – Don’t let the wind get your tower down …… WA1ABP 30

VHF Operation by Remote Control<\/h3> – Q5 S9 from any location …… W6MVH 32

An Invisible Antenna<\/h3> – A new antenna theory …… W1EMV 42

Using Your Electromagnetic Wave<\/h3> – Communication as it should be …… WA5HPV 44

ITV Got You Down?<\/h3> – Getting rid of the buzz-saw …… WA7CSK 46

The YF Fights Back<\/h3> – If you can’t lick’em join’em …… WA6SPT 48

A Career in Electronic Engineering<\/h3> – Areas where engineers are needed …… W6JTT 50

What is YOUR “Amateur Q?”<\/h3> – How well do you know the FCC regulations? …… K3STU 52

And They Called “Mother Shipton” Crazy<\/h3> – Remarkably prophesy from 500 years ago …… K4FQU 56

Recovering “Lost” QSLs<\/h3> – Helping the post office help you …… K6UMV 58

Project MOONRAY<\/h3> – Amateur radio on the Moon in 1970 …… 60

Audio SSB<\/h3> – A new use for an AFSK oscillator …… K6ICU 64

Installing a Transceiver in a Rented Car<\/h3> – Wonder if Hertz would approve? …… G3BID 66

Preventive Maintenance<\/h3> – Curing problems before they start …… K3KMO 70

You Can Pass The Extra<\/h3> – Or so the man says …… K6YA 73

Use of Q-multiplier to Increase Intelligibility of Received Voice Signals<\/h3> …… Ives 74

Crystal Etching Tips<\/h3> …… W4AYV 76

Take Uncle Alf’s Advice<\/h3> – Uncle Alf talks about coax baluns …… W6NIF 86
\n
\n

73 Ham Radio Today Issue May 1968<\/a>
<\/h2>\n

The UFO Network<\/h3> – Setting up to track the whetever they ares …… W2NSD\/1 2

Practical Miniature Antennas for 80-10 Meters<\/h3> – Only 80 inches for 80 meters! …… W8VVT 6

The Diamond Array<\/h3> – One-element 40M quad which also works on 20 and 10 …… W6LLN 10

Why Not?<\/h3> – Why not put a VHF yagi beam on your low-band beamm boom? …… W6HGX 11

Do It With Wire<\/h3> – A wire antenna fed with twinlead that works all bands …… K3QKO 14

Durable Gamma Match<\/h3> – Clever idea by one of our DX newcomers …… K4IIF 16

How to Hang a Dipole<\/h3> – Including a haywire bridge to get it right …… W2DXH 18

Matching Stubs<\/h3> – SWR depends on matching the antenna to the feedline …… WA5STM 24

Ten Meter Dipole<\/h3> – Simple effective wideband vertical dipole …… W6BLZ 30

Duo-vee Beam<\/h3> – 10 and 15m beam on one boom with no interaction …… K1UFQ 32

Computer Design of Beam Antennas<\/h3> – Great for those of you with a nice computer handy …… WA4WWM 34

A Primer of Basic Antenna Theory<\/h3> – This should count towards the Advanced study course …… W6ZGO 40

73 Hamfest for July 6th<\/h3> – Come on up to New Hampshire end have some fun with us …… W2NSD\/1 49

Triangular Loop Beams<\/h3> – 40 through 10 meters.  These may become very popular …… W6DL 50

The Selcal<\/h3> – An RTTY stunt box using ICs …… K8ERV 58

Hardware Store Groundplane<\/h3> – Flanges nylon pipe aluminum tubing it is all there …… WA4UZM 71

Are Phone Patches Legal?<\/h3> – If we tell you here you won’t read the article …… K6MVH 72

Amateur Radio and Public Service<\/h3> – Getting set up on 7255 for emergency traffic …… W2CFP 74

Microfilm Your Magazines<\/h3> – How to do it …… WA4HRX 76

Advanced Class Study Course – Part 2<\/h3> – Simple way to know your theory instead of memorizing answers …… Staff 82

Technical Aid Group<\/h3> – These fellows will answer your technical questions …… Staff 92

A New Quad<\/h3> – The Reginair 321 quad …… WA1BUN 98
\n
\n

73 Ham Radio Today Issue June 1968<\/a>
<\/h2>\n

Transformer Tricks<\/h3> – 15 uses for odd transformers …… W4LLR 6

The ARC-5 Transmitter\/receiver<\/h3> – A new slant on an old favorite …… WB6BIH 10

Modifying the BC1206<\/h3> – Using a Japanese transistor Radio …… W6GXN 14

APS-13 ATV Transmitter<\/h3> – Tail-end Charlie rides again …… W6ORG 16

Varsatile Variable Power Supply<\/h3> – A simple bench supply …… W6SLP 18

Low-cost Conversion of Surplus Oscilloscopes<\/h3> – Using the IP\/69\/aLA-2 …… W8JZI 22

Crystalize that FM Rig<\/h3> – Where to find the right xtal! …… K9STH\/5 24

The Dollar-fifty Super Nifty<\/h3> – A nifty CW filter …… W3KBM 30

Restoring Old Equipment<\/h3> – Or making the family think you got a bargain …… W9NLT 32

New Life For an Old Work Horse<\/h3> – The 75A-1 isn’t exactly surplus but …… K9STH\/5 40

Modification of the TRA-19<\/h3> – Amplifier cavity to 432 MHz …… K6RIL 44

Salvage Those Old Transistor Radios<\/h3> – Tricks with radios and recorders …… K0VQY 46

Counter Connections<\/h3> – How to use a counter once you get one …… W3GKP 50

Labels for Homebrew Gear<\/h3> – Making use of your typewriter …… W4LLR 48

Review of the Amphenol Millivolt Commander<\/h3> – A fine new volt ohmmeter …… W1EMV 56

Poor Man’s Mil Specs<\/h3> – Identifying military spec numbers …… W4WKM 58
\n
\n

73 Ham Radio Today Issue July 1968<\/a>
<\/h2>\n

Let’s Build a Tower<\/h3> – Sturdy wooden construction …… VE1TG 6

Why Not a Tilting Tower<\/h3> – With this method why not? …… W6DL 12

40 ft Non-conducting Sky Hook<\/h3> – Making the most of a phone pole …… K7VBQ 16

Burn Prevention<\/h3> – Asafe place for the hot soldering iron …… VE3BUE 21

The Beam Pole<\/h3> – Another phone pole idea …… W7GBJ 24

Tilt That Tower<\/h3> – Using the house for leverage …… W2AJW 28

Panel Gap Filler<\/h3> – Another idea to fill the holes …… Ives 33

IC Audio Amplifier and Oscillator<\/h3> – ICs are here to stay …… W7AKS 34

The New Tower<\/h3> – Battling the building inspector …… WA2GXT 37

New 160 Meter Allocations<\/h3> – Easy-to-read chart to give all the information on the new rules …… Staff 39

Some Audio Thoughts<\/h3> – Versatile modulator unit …… W3KBM 40

DB<\/h3> – Wait ’till you see the illustration …… WB2PAP 42

More on Xtal Etching<\/h3> – Using readily available chemical …… K6GKP 50

Writing for Service Information<\/h3> – Communicating your problem …… K2PTS 52

Care and Feeding of a Ham Club<\/h3> – Part 1 of a new series …… W5NQQ 54

Photographic QSL<\/h3> – Do-it-yourself QSLs …… W3RZD 60

WTW Report<\/h3> – Gus gives full listing of awards …… W4BPD 62

UFO Net Information<\/h3> …… W2NSD 64

73 Subscription Premiums<\/h3> – Lots of goodies free …… Staff 70

The Anatomy of a Pile-up<\/h3> – DXing …… G3BID 74

Advance Class Study Course<\/h3> – Part 4 transmission lines and SWR …… Staff 76
\n
\n

73 Ham Radio Today Issue <\/a>
<\/h2>\n

Terminated Grid Linear Amplifier<\/h3> – An extremely stable configuration …… W1DIS 6

A Unique Transistorized Transverter<\/h3> – Using a conventional transformer …… WA4JVE 12

Photographic Printed Circuit Process<\/h3> – Printed circuit etching made easy …… W6AYZ 14

A Simple Method of Double Sideband Conversion<\/h3> – If you must go DSB this is as easy as any …… K5LLI 18

Basic HF Receiving Converters<\/h3> – Getting more from your HF receiver …… WA4UZM 22

3 on 20 for 15<\/h3> – $15 dollars that is. A 20 meter beam …… WA4YVQ 24

The Mini-boom Quad<\/h3> – An efficient Quad with spider array …… VE6FS 26

The Collinear Resurrected<\/h3> – End-fire array without sacrificing performance …… WA1DVB 28

A Microphone Pre-amp Clipper<\/h3> – More speech power without distortion …… W2EEY\/1 32

Review: The Heath IM-17 VTVM<\/h3> – A versatile piece of test equipment …… W2TQK 34

Hamwriting<\/h3> – A veteran writer tells how …… K6MVH 36

A Grounded Grid Linear Amplifier<\/h3> – 3.0 through 38 MHz in five steps …… WA6WUI 42

Displaying QSLs<\/h3> – A unique display method …… VE3BUE 48

Care and Feeding of a Ham Club – Part 2<\/h3> – A series to save the club …… W5NQQ 50

Advanced Class Study Guide – Part 5<\/h3> – Receiver operation …… Staff 54

A $2.00 Phone Patch<\/h3> – Inductive coupling makes it legal …… W6TRU 64

Trapping Strong Signals<\/h3> – Making the most of your receiver …… K6KA 68

Review: The Hustler 4BTV Vertical<\/h3> – An antenna for small space …… W6AJZ 70

High-quality Hybrid Postscripts<\/h3> – More on this fine receiver originally shown in February 1968 issue …… VE3GFN 72

How to Pass the Extra – By Learning<\/h3> – Overcoming the psychological block …… WB6BIH 74

A Military Career for the Ham<\/h3> – The Armed Forces is looking for you! …… G5ACY 76

I Rode With the CB’s<\/h3> – How the CB’ers are steeling our thunder …… K4HKD 78

Transit Time – So?<\/h3> – A just noticeable difference …… K9UYA 80

Pilot Lamp Life<\/h3> – How to prolong the life of the lamps …… WB6ZOA 84
\n
\n

73 Ham Radio Today Issue September 1968<\/a>
<\/h2>\n

Going VHF – In the Mobile<\/h3> …… W9HDF 6

Communicator Reborn<\/h3> …… W6HCX 14

432 MHz Amplifiers<\/h3> …… W6AJF 16

Quick Converters<\/h3> …… W9NLT 20

So You Think You’re on Frequency<\/h3> …… K6MVH 27

Parallel T-Network Design<\/h3> …… Kyle 30

Starting Off on VHF<\/h3> …… WA1GEK 32

Learning – The Radio Code if You’re Over 30<\/h3> …… W1EZT 34

A Review of the Heathkit SB-110A<\/h3> …… Matthew 60

1296 Megacycles – 1968<\/h3> …… K2TKN 42

The VK3ATN Moonbounce Rhombic<\/h3> …… W2NSD\/l 44

K2US: 1968 Ham Radio Expo<\/h3> …… WB2DLW\/k3AFW 48

Appliance Operators – Please Turn Page<\/h3> …… WA4WAI 59

Six Meter Transceiver<\/h3> …… W2AJW 62

Rejuvenating Old RTTY Ribbons<\/h3> …… W5AQN 67

Two Sidebands From the Tower<\/h3> …… W4KAE 70

Getting Your Higher Class License – Part 6<\/h3> – Transmitters …… Staff 74

The Care and Feeding of a Ham Club<\/h3> …… W5NQQ 86

Tables of Electronic Symbols for 73 Contributors<\/h3> …… 94
\n
\n

73 Ham Radio Today Issue October 1968<\/a>
<\/h2>\n

A Collection of Thoughts on Receiver Design<\/h3> – Tips for the builder …… WB6BIH 6

3 Tube Super-het Short Wave Receiver<\/h3> – Performs like six tube hearing aid …… W6ELJ 14

The MO Receiver<\/h3> – This one will have you burning the midnight oil …… K5WYG 30

Project Facsimile Antarctic<\/h3> – Morale booster in the cold Continent …… K6GKX 28

A High-performance Receiver for 2 Meters<\/h3> – A VHFer’s dream receiver …… W2HUX 30

Ham Workshop<\/h3> – The bare essentials to work on the gear …… W0PEM 38

New Life for an Old Circuit<\/h3> – Reviving the Yackar VFO …… Thorpe 40

VHF RF Noise Suppression<\/h3> – Mobile noise good tips for HF too …… K6ZFV 44

Reviewing the SR-400<\/h3> – Hallicrafters la test transceiver is great …… W2NSD\/1 48

FET Converter for 50 MHz<\/h3> – 6 meter converter that works …… WB6YVT 52

Neutralization<\/h3> – What’s neutralization all about …… K6EAW 56

Advanced Class License Theory Course – Part 7<\/h3> – More on transmitters …… Staff 58

More on Receiver Blocking<\/h3> – The Pro does a follow up on a previous article …… K6KA 72

Regenerative Detectors<\/h3> – How they work …… W1EZT 76

The Q-q Meter<\/h3> – The measurement and importance of “Q” …… WB6IBS 82

Save That Cordless<\/h3> – An untapped source of parts for the shack …… W3GKP 88

2 Meter Ground Plane<\/h3> – Never underestimate the ground plane …… WB6BIH 91

Improving Stability in Older Receivers<\/h3> – Good tips on making them solid …… W6NIF 94

Care and Feeding of a Ham Club – Part 4<\/h3> – Public opinion …… W5NQQ 98

6 Meter Ground Plane<\/h3> – Novel construction idea …… W8JZY 102

VHF Monitor<\/h3> – Keeping in touch with the group …… W4KAE 104

Simplified dB Leveling<\/h3> – ALC-aGC Circuits …… W2DUD 106

FMing a VFO<\/h3> – FM doesn’t have to be crystal …… WA6UFW 110

FET Pre-amplifiers<\/h3> – Boosting receiver performance …… W2EEY\/1 112
\n
\n

73 Ham Radio Today Issue November 1968<\/a>
<\/h2>\n

Computer Card Transmitter<\/h3> – Plug in components …… K1EUJ 6

Crystal Filters<\/h3> – The heart of SSB …… W3RET 12

Trouble Shooting Solid-state<\/h3> – Modern day problems solved …… K3PBY 16

IC Frequency Counter<\/h3> – Easy to build counter for ham applications …… WB6IBS 20

C.V. Transformers for Ham Applications<\/h3> – Keeping the voltage constant in the shack …… WA9CQN 28

A Space Communications Odyssey<\/h3> – It isn’t going to be easy to keep in touch! …… K6BW 32

Surprize in the Skies<\/h3> – Pulsars.  What are they? …… W1EZT 36

Using Thin Wire Antennas<\/h3> – Fooling the landlord …… W2EEY\/1 42

A 7 MHz Transistor Transmitter<\/h3> – An all-transistor rig for 40 …… WA6JND 50

Double-conversion of the BC348M<\/h3> – Surplus receiver made over for SSB …… VU2TV 54

The Gentrac<\/h3> – A do-all test set for receivers …… W6AJZ 58

Harness your Wiring<\/h3> – A professional wiring job for homebrew …… K5LLI 66

Copper Wire<\/h3> – The forgotten component …… W1EZT 70

Who Says You Can’t Take it with You?<\/h3> – College days are here again …… WB6ABM 76

The Thermistor<\/h3> – Temperature measurements …… WB6BIH 78

Using SCR in RTTY Series-wound Motor<\/h3> – A short-short story …… W8NSO 82

New High Voltage Transistor<\/h3>s – A list with properties …… K3VKC 84

Project Facsimile Antarctic – Part 2<\/h3> – Choosing Miss Antarctica …… K6GKX 86

Are You Really Ready for the Next Emergency?<\/h3> – A series of tornados strike …… W0DDW 88

Advance Class License Study Course – Part 8<\/h3> – Transistor principles …… Staff 92

Ipecac Works on LIDS<\/h3> – Hoo-boy that smarts! …… K1YSD 102

Instant Drilling Rig for Grounds<\/h3> – Water power drill …… WA4VQR 108

Care and Feeding of a Ham Club – Part 5<\/h3> – More on money raising …… WSNQQ 118
\n
\n

73 Ham Radio Today Issue December 1968<\/a>
<\/h2>\n

Using the First Ham Integrated Circuit<\/h3> – Includes several useful circuits …… W6DNS 6

Mouse Tunnels<\/h3> – Hiding the wiring …… K6HKB 12

Circular Modulation Monitor<\/h3> – A new scope …… WA9IGU 14

The Mini-square<\/h3> – Square wave in miniature …… WB6BIH 16

Add-on FM Test Set<\/h3> – Simple to complex in easy stages …… K9STH 18

The Elusive H Parameter<\/h3> – Not so elusive now …… WB6BIH 20

Zero Temperature Coefficient VFO<\/h3> – Sure stability …… W6WQC 24

75 Meter DSB Rig<\/h3> – A step in the right direction …… W3KBM 28

A Novice FET Converter<\/h3> – A good building project for the Novice …… K6DBQ 36

Transceiver Review<\/h3> – Photos and information about the transceivers now available for Christmas …… Staff 40

30 Watt Transistor Transmitter<\/h3> – All transistorized! …… W5PAG 46

Care and Feeding of a Ham Club<\/h3> – Part 6. Do something interesting …… W5NQQ 52

Getting Your Higher Class License<\/h3> – Part 9. More on transmitters …… Staff 56

Christmas Gifts for Hams<\/h3> – Gifts under $25 …… Staff 72

Three Black Boxes<\/h3> – What constitutes a station …… W5EHC 82

Facsimile and the Radio Amateur<\/h3> – What is facsimile and how to do it …… K6GKX 84

Why SSB?<\/h3> – Required reading how SSB is different …… K3PUR 86

Limitations on Antenna Reciprocity<\/h3> – The answer to one way skip? …… WA4UZM 92

Index to Articles Appearing in 73 in 1968<\/h3> – Cumulative index. Where to find it …… Staff 98
\n
\n

73 Ham Radio Today Issue January 1969<\/a>
<\/h2>\n

The Suppressor Compressor<\/h3> – The neglected grid …… W3KBM 6

Putting the HW-12 on 160 Meters<\/h3> – With the new rules this is important …… W8FGB 12

Tuning a Parasitic Beam<\/h3> – This can really be fun …… W1EMV 16

Does Your Linear Need Help?<\/h3> – This could solve the problems …… W9VEY 22

Some Thoughts on Voltage Control<\/h3> – A subject of some importance …… VE4RE 24

Solid-state Monitoring<\/h3> – A Heath modification of merit …… W6JDD 26

The Two Meter Transistor Transmitter<\/h3> – Plus one tube …… K5WOR 28

The Yasme World-wide DXpeditions<\/h3> – Starting with Danny …… Yasme 32

The LC Power Reducer<\/h3> – Power reduction under same load …… W2EEY\/1 38

Why Ham RTTY<\/h3> – Verrry interrresting …… WA8DCE 42

Panadaptor\/spectrum Analyzer<\/h3> – How to lose friends by being honest …… W6DTR 44

The Six Net<\/h3> – Transistorized receiver …… W5JSN 48

The Operating Console<\/h3> – A place for everything in its place …… W6GDP 52

RTTY Auto-start<\/h3> – Why monitor? …… W6ORG 56

Oscillator Frequency Shift Calculations<\/h3> – Calculating drift …… WA6DPD 58

A 10 Minute 40 Meter Rig<\/h3> – On the air in a hurry …… WB2YOJ 62

UFO Interest<\/h3> – Not restricted to hams …… K6MVH 70

Quad and Easy QRP<\/h3> – Low-power can be fun …… WB2YRQ 72

Full Sequential Switching<\/h3> – Using simple relays …… G3KPO 74

Drake R4A and T4X<\/h3> – Not new but still great …… WB4EFA 76

Operating the Two’er<\/h3> – Some hints for making it better …… W6BLZ 78

The S.O.B.<\/h3> – Sightless Operator’s Bridge …… WA5SWD 82

Getting Your Advanced Class License<\/h3> – Part 10. The last of this series …… Staff 84

Care and Feeding of a Ham Club<\/h3> – The last part of this series …… W5NQQ 96

European VHF<\/h3> – They use the bands too …… DL5QN 100
\n
\n

73 Ham Radio Today Issue February 1969<\/a>
<\/h2>\n

A Fast Scan Vidicon in Slow-scan Camera<\/h3> – More on ATV …… K7VZZ 6

A Cheap and Simple Linear Amplifier<\/h3> – More watts per dollar …… WB2PTU 10

The Beatnote Basher<\/h3> – A selective audio filter …… WB6JXU 12

The Unijunction Transistor<\/h3> – What they are and what they do …… VK3ZRY 14

What’s Out There<\/h3> – Probing the universe for life …… W1EZT 24

Velcro<\/h3> – A new material with ham potential …… K3AQH 32

TVI Suit<\/h3> – Ham sued for one million …… Staff 36

>Nikola Tesla<\/h3> – The master of electrical energy …… Elkhorne 38

Go Mobile<\/h3> – Some pointers for new mobileers …… WB6ACM 58

Getting Your Extra Class License<\/h3> – Part 1. AC-dC theory …… Staff 60

Is it Cold Down There?<\/h3> – A common question in the Antarctic …… K6GKX 74

Ampheham<\/h3> – Building project for odd connectors …… Staff 76

Be a Good Ham Not a Bad Egg<\/h3> – The fine art of lending and borrowing …… W5NQQ 80

73 Visits FAA Center<\/h3> – The electronic complex for aircraft control …… Staff 82

CW Only Here OM<\/h3> – CW can be fun …… W6EKN 90
\n
\n

73 Ham Radio Today Issue March 1969<\/a>
<\/h2>\n

Modifying the TCS Transmitter<\/h3> – A useful piece of surplus gear …… K3UUL 6

A $4 Compressor Pre-amplifier<\/h3> – More speech for less money …… W2EEY 10

Reactance or Impedance<\/h3> – Answers to a lot of old questions …… K9ZPZ K9DRB 14

Weather Snooper<\/h3> – Eavesdropping on the aircraft WX frequencies …… K6ZFV 18

The Charmin’ Keyer<\/h3> – The solid-state keyer …… W9HXM 22

Amateur Radio Knows No Borders<\/h3> – Saving a life across the Iron Curtain …… Staff 32

A Better Balanced Modulator<\/h3> – A good project ……WA1FRJ 36

Adjustable Power Supply<\/h3> – A must for building projects …… WA0ABI 40

Save Your Money<\/h3> – Salvaging transformers …… K6GKX 42

Transistor Oscillators<\/h3> – A variety of circuits old and new ……W9ZTK 44

Heath HW-18 Review<\/h3> – 160 meter transceiver …… W8QUR 50

Cool It<\/h3> – Blowers to cool the tubes for UHF …… K9CNN 54

A New Support for That Beam<\/h3> – Using phone pole …… K1MYV 56

The Case for the Half-wave Feed Line<\/h3> – Care and feeding antennas …… W5QRJ 58

Putting Creativity to Work<\/h3> – Making household articles work in the shack …… VE3BUE 62

The Lamb Dyer<\/h3> – An amusing story …… WA1ABP 64

IF Alignment<\/h3> – A simple chart method …… K8ZHZ 65

Charlie’s Broken Dream<\/h3> – Don’t be a “Charlie” …… WA8VST 66

Kluge Tube<\/h3> – Resurrecting an old power amplifier maybe …… Staff 68

For Those Who Think Small<\/h3> – And other tips …… WA4VQR 73

Surplus Conversions<\/h3> – Where to find conversion information …… Staff 96

Surplus Advertising Catalog<\/h3> …… Staff 97

Getting Your Extra Class License<\/h3> – Part 2. Amplifiers ……Staff 128
\n
\n

73 Ham Radio Today Issue April 1969<\/a>
<\/h2>\n

Dual-channel Oscilloscope Pre-amplifier<\/h3> – Convert your scope to a $1000 dual channel job. Save money …… W3ZZY 6

Simplest RF Pre-amplifier<\/h3> – Simple new very effective. Works too …… W1EZT 10

Education and Ecstacy<\/h3> – Reprint from LOOK Magazine re the “magic” of ham radio …… Leonard 14

Push-to-talk<\/h3> – Converting the Two’er for this valuable function. Beats LSMFT …… VE3ETJ 16

Variable DC Load<\/h3> – For testing power supplies and things like that. You never know ……W2AJW 18

Single-side SWR Bridge<\/h3> – Complete with plan for etched circuit board …… WA5SWD 22

100 kHz Marker Generator<\/h3> – Used to mark frequencies up to the 144 and 220 MHz bands …… W7CJB 24

One Technique to Avoid That Routine QSO<\/h3> – Desperately needed information for many phone and CW ops …… W6EUV 28

Minimum Cost Silicon Semiconductor Survey<\/h3> – Long article but transistor buffs should flip over it. Flip …… Zaranski 30

Heath SB-610 Monitor Scope Modifications<\/h3> – Makes a good piece of gear even gooder. You need one …… K6SDE 42

VHF FM Station Control<\/h3> – Switches two channels in each of two bands …… WA7EVX 46

A Simple Portable Rig for Six Meters<\/h3> – Two transistors and one IC modulator and head for the hills …… WB6BIH 48

Using FETs in Burst Generators<\/h3> – Now what in the devil is a burst generator? …… K3VKC 50

Two Meter Converter<\/h3> – For the Swan 250… Or any other receiver or transceiver …… K3VLQ 52

VSWR An Outmoded Parameter<\/h3> – Adding fuel to the fires of controversy? Or calling troubled waters? …… VE2AXQ 55

Testing the Drake VHF Converters<\/h3> – The new Drake converters for six and two are grrrreat! …… WlEMV 56

About Loading…. Which Loads What?<\/h3> – Can an antenna really load a rig? Or does the rig load the antenna? …… Staff 58

0 Cycle Filter<\/h3> – The ultimate in selectivity …… LX5SM 60

Camp Albert Butler<\/h3> – You’ve read the ads… Here is what it is all about …… W4UF 68

Extra Class Study Course – Part 3<\/h3> – Part 3 of 10 parts. Good luck …… Staff 70

Learning the Morse Code<\/h3> – A new and much faster approach to the code …… K9AAU 85
\n
\n

73 Ham Radio Today Issue May 1969<\/a>
<\/h2>\n

Who’s Who in Amateur Radio<\/h3> – Celebrities in our ranks …… W8GI 4

Stacked Gamma Matched Turnstile<\/h3> – About 10 dB on 2m omnidirectional …… WA9LPC 8

VHF Vacation Special<\/h3> – 2m slot antenna made out of aluminum foil ……W2ZRX 10

S-unit Attenuator<\/h3> – For calibrating S-meters and antenna gain …… WA5SWD 14

In the Beginning<\/h3> – Not for serious amateurs or heat patients …… K1YSD 20

Don’t Kill Your Generator<\/h3> – Just wound it a little maybe …… W1EZT 24

Working DX Without Six Elements<\/h3> – Persistence and sneakiness substituted for power …… K5PAC 26

The Short-vee Antenna<\/h3> – 10-15-20m 56′ on a leg and it works …… W3FOJ 28

The Little Wonder<\/h3> – 80-10m antenna…  Looks a lot like the Joystick …… W5ZBC 30

Easy Tuning of the Quad<\/h3> – Multi-element quads can be awfully difficult …… W4AZK 32

The Antennascope<\/h3> – An effective tool. It’s okay if you know how to use it …… VE3CEA 36

Two on Top<\/h3> – 80m vertical which tunes both ends of the band ……W6AJZ 40

Measuring Antenna Gain<\/h3> – You don’t just ask around for signal reports …… W2EEY 42

QRP – A New World To Conquer<\/h3> – Where 1.000 watts is a full gallon …… W6TYP 46

Report on The Galaxy 550<\/h3> – Great new transceiver…Read all about it …… W6AJZ 48

Feeding & Tuning Three-band Quad<\/h3> – Boomless quad novel approach. etc …… WA4VWY 52

To Patch or Not to Patch<\/h3> – Here’s the latest news on patching …… W5LHG 56

Direct-reading SWR Indicator<\/h3> – Tired of switching back and forth? Lazibones …… K3WRW 60

Asymmetrically Feeding Long Wires<\/h3> – Strange things happen when you move the feed around …… W2EEY 62

Tests the James Research Units<\/h3> – And finds them outstanding and mild …… WlEMV 13

Compressed Vertical for 160<\/h3> – If you have room for a 120′ tower pass this by …… W6FPO 70

Class A Transistor Amplifier Design<\/h3> – Seven steps to total and complete success. Probably …… WA5SWD 72

$4.98 Novice Special<\/h3> – Why spend more for a nice 15m antenna? Why not? …… WA7CSK 74

How to Fly Your Kite<\/h3> – Simple 160m antenna for Field Day or expeditions …… E14R 77

In Search of a Better Angle<\/h3> – Angle-of-radiation is of critical importance. Read …… K9YOE 78

FSK Exciter<\/h3> – Another bone for the RTTY fiends …… W4LLR 84

Telephone Beeper<\/h3> – Handy gadget for the new phone patch laws ……W6BLZ 88

KW Dummy Load Cheap<\/h3> – Start using this instead of your antenna …… WB2PTU 92

Mini-bomb<\/h3> – Another of his little 10 kW linear amplifiers almost …… W0SKY 94

DX From DL Land<\/h3> – What’s it’s like over on that end …… DL4BR 96

Phonetics for the Pileups<\/h3> – How to get your call letters through the mess …… KH6IJ 98

Extra Class License Course<\/h3> – Part 4 of the Extra Class Study Course. Learn ….. Staff 100

Economy Chronometer<\/h3> – Some hams are pretty doggone cheap …… W0EDO 118

4×150 Socket<\/h3> – Another shortcut for the cheapskate ham …… WA3AQS 120

All-band Curtain Array<\/h3> – 160-10m and only 112 feet long …… VK4SS 122

How to Tune a Circuit<\/h3> – Figuring capacitance and parallel capacitance …… K5LLI 123

Mobile Antenna for Vacation USA<\/h3> – Not much trouble and works slickeydoo …… WB2WYO 130
\n
\n

73 Ham Radio Today Issue June 1969<\/a>
<\/h2>\n

New Ways of Generating Microwave Power<\/h3> – New solid-state devices you should know about probably …… K3PBY 3

Modification of VHF Transmitters for CW Operation<\/h3> – Moonbounce? Aurora? DX? You may need to use CW …… K1OYB 12

Mondo Hamme<\/h3> – Read slowly this may be injurious to your health …… K1YSD 14

Straightforward SSB for 6 Meters<\/h3> – Build this little beauty next week …… VE4RE 18

The 432’er Solid-state<\/h3> – Bill Hoisington gets you on 432 the fast easy way …… K1CLL 24

Six Meter FET Converter<\/h3> – You are not still using tubes in your converter?  Reform …… W6RET 34

Compleat AVC<\/h3> – Showing how much can really be done to improve AVC systems …… W8RHR 36

Leaky Lines<\/h3> – Random thoughts by a random thinker …… K2AGZ 38

Field Day Fever<\/h3> – Your Field Day should only work out as well …… VK4SS 40

A Field Day to Remember<\/h3> – Field Day can be loads of fun; give it a try this year …… W8BVU 44

Sunspots?  Who Need’s ’em for Six Meter DX?<\/h3> – OK so you can work ’em without sunspots too …… K7ALE 48

DX Desk<\/h3> – DX ramblings WTW news and other rot …… K2AGZ 54

Whipping Two Mobile<\/h3> – Make your own whip for two meter mobile …… K6ZFV 58

Design of UHF Tuners Using Silicon Transistors<\/h3> – Some good ideas for you UHF’ers …… Sir 60

Review of the Heathkit IT-28 Capacitor Checker<\/h3> – Heath does it again as usual …… W0HMK 64

How to Convert Your Receiver for Six Meters<\/h3> – Nice little converter for the 75A2 or any other receiver …… W8RHR 66

Forty Twenty and Two<\/h3> – Nice simple vertical antenna using dielectric pipe unions! ……WA8IYL 70

Review of the Caringella Compressor\/pre-amp<\/h3> – We like it when readers review new equipment …… W2EEY 71

ATV Video Modulator<\/h3> – One transistor is all it takes …… W6ORG 74

VHF FET More Of<\/h3> – Pre-amps for 144 end 432 MHz like for ATV you know …… K6KTP 76

Simple Scope for RTTY Monitoring<\/h3> – Good news for all you ‘ratts …… W6JTT 78

Curtain Roads Coat Hangers and Control Links<\/h3> – VHF and UHF antennas from the closet …… K9STH 80

Facsimile and the Radio Amateur – Part 2<\/h3> – Answers to questions about fax …… K6GKX 84

Extra Class License Study Course – Part 5<\/h3> – We try to make it easy for you to get that ticket …… Staff 86

Soft Solder Construction of Cavities and Lines<\/h3> – Makes those VHF machining jobs a cinch almost …… WA9VFG 102

Police Converter<\/h3> – Enjoy the thrill of listening to police calls if it isn’t illegal …… K0VQV 104

The Neglected Mini Vee-beem<\/h3> – Small and works like crazy on 10-15-20m.  You read it here…… W0LBV 106

Modifying a Tube Converter for FET<\/h3> – Makes a great improvement and doesn’t cost much…… W6OSA 114

A Variable Resistance VFO for 6 and 2<\/h3> – Transistors PC board and tuned from afar.  Also very stable …… K9ALD 124

VHF-band Scanner<\/h3> – Watch the VHF bands with the ALA-10 …… WA8OIK 127

Simple Converter for Slow-scan TV and Facsimile<\/h3> – Ridiculously simple if you want to know.  Let’s get going …… W2LNP 130

Confessions of an Appliance Operator<\/h3> – How to ad lib in spite of the state of the art …… W3ETQ 133
\n
\n

73 Ham Radio Today Issue July 1969<\/a>
<\/h2>\n

Confessions of an Appliance Operator<\/h3> – This article is not for those of precarious health …… K1YSD 2

The Ancient Modulator<\/h3> – AM? Yes. indeed… for 160M 2M etc. PP 1625 mod …… WB6BIH 14

A Slow Scan Television Signal Generator<\/h3> – Things are really happening on SSTV. Now you can join the fun …… K7YZZ 16

Six Meter Linear Amplifier<\/h3> – One kilowatt for 10 cents a watt. Why not be heard ? …… WA0ABI 20

A New Way to QSL<\/h3> – Simpler. ..Less expensive … faster …… ZE7JV 24

Kilowatt Amplifier for 420 MHZ<\/h3> – Sneaky water-cooled final that perks away as you talk …… W2CLL 27

4 Thirty Two’er<\/h3> – Converter and transmitting converter for 432 …… WA3AQS 32

CW Can Get Your Goat<\/h3> – Rettuesnesnon …… K7TTA 36

Rio O’Oro<\/h3> – DXpedition to EA9 complete with incredible frustrations …… W4QCW 38

Trouble Shooting Antennas<\/h3> – Clever ways to find out what’s wrong from the ground …… W2OLU 44

Six Meter IC Converter<\/h3> – Two IC’s some tuned circuits and a crystal …… K2ZEL 46

Radio Control Revisited<\/h3> – Model airplanes and their modern sophisticated control …… WlOLP 49

Long Range Propagation Forecasting<\/h3> – Our expert explains his magic system …… Nelson 62

Simple and Effective RTTY Terminal Unit<\/h3> – Two IC’s two tuned circuits and not a lot more! …… W6JMM 65

Facts and Fads<\/h3> – More history uncovered with negligible reverence …… WlUSM 68

An IC Audio Notch Filter<\/h3> – One IC some resistors and pots and presto …… W2EEY 72

Converting the VRC-19 for VHF FM<\/h3> – Another attempt to boost the FM population explosion …… W6JTT 76

The Greatest DX of All!<\/h3> – Solar flare detector …… K5JKX 80

Intelligent Tube Substitution<\/h3> – Lovely article for tube fans …… K3LNZ 88

Passive Reflectors for Amateurs<\/h3> – Most of us have wondered about this. Here is the info …… W7EEX 91

Modification of the Heath HW18-3 VFO<\/h3> …… W8QUR 100

Whip Antenna Add-ons<\/h3> – VHF mobileers can get more gain and directivity …… W2EEY 104

Two Meter Transistor Exciter<\/h3> – All transistor …… W6AJF 108

Extra Class Study Course Part VI<\/h3> – The new license is a snap with this series …… Staff 112

A Stable HF VFO<\/h3> – Transistorized PC vfo for the DX-40 or any other rig …… WB6BIH 128
\n
\n

73 Ham Radio Today Issue August 1969<\/a>
<\/h2>\n

Listen In on Two-meter FM Repeater<\/h3> – Two little ole transistors in this simple monitor receiver …… K0VQY 4

An FET Regenerative Receiver for 3.5 mhz and Up<\/h3> – Or use two FET’s and have a ball on the low bands …… W6OSA 6

Multi-channel FM Operation<\/h3> – Adding relay crystal switching to commercial FM gear …… WA7EVX 12

The Case for the 5\/8 wave Vertical<\/h3> – John makes a very good case indeed for this antenna …… W2EEY 14

The Genesis of Radio Reception<\/h3> – History Lesson …… WlUSM 22

An Introduction to Integrated Circuits<\/h3> – Let’s hope that an intimate relationship results …… WAlFHJ 26

RTTY Tone Generator<\/h3> – Now you can mark and space up a storm …… W7FLC 32

General Purpose Good-bad Transistor Tester<\/h3> – Use less if all your transistors are in excellent shape …… W0KKA 41

A Compact Two-meter Transmitter<\/h3> – 2E26 output phone …… W4UOY 42

Measuring f t of Surplus Transistors<\/h3> – There are some enormous bargains around…… WA1FRJ 46

Skylines for 160 Made Simpler<\/h3> – 160M antennas from A to exhaustion …… WlEZT 49

The Triac<\/h3> – New gadget you should know about. Wot next? …… K8TSQ 59

430-470 khz Sweep Frequency Generator<\/h3> – That’s khz not mhz. This is for aligning i-f strips …… WA5SWD 62

What Do You Think?<\/h3> – A special 73 metaphysical feature …… KlOXK 64

Leaky Lines<\/h3> – Grumbles by Sam … err Dave…… K2AGZ 66

Magikey — for Automatic Didahs<\/h3> – Another automatic key and a good one – 2 transistors …… W3SGV 68

FM = Fun Maker<\/h3> – Say are you missing out on the FM bandwagon? …… K2PTS 72

The SB100 on Six Meters<\/h3> – It’s possible …… WB4CXL 74

Measuring the Frequency of Unmarked Crystals<\/h3> – Different simple ways of doing this …… K1EUJ 76

Extra Class Study Course. Part VII<\/h3> – There is no excuse for failing the test if you read this …… Staff 78

Now You Too Can Have A Deviation Meter<\/h3> – Don’t deviate too much …… K9STM 96

Two Transistor 1500 Mile Transmitter<\/h3> – 1\/4 watt super QRP rig for some excitement …… K0VQY 98

Long Circular Quads<\/h3> – Our cover feature for moon bounce work …… WA4KAE 101

Measuring FM Receiver Noise Figure<\/h3> – Taking the mystery out of this for FM receivers …… W8BBB 112

Would You Like To Be A Broadcast Engineer?<\/h3> – No …… K2ULR 117

Distress : The Amateur and the Coast Guard<\/h3> – What happens when an amateur passes along a distress call …… WB6UKX 122

A Transistor Parameter Tracer<\/h3> – Useful unless tubes come back again …… K3PUR 128

What Are We Here For?<\/h3> – Sometimes as we tune the bands perhaps we wonder too …… W8RHR 134
\n
\n

73 Ham Radio Today Issue September 1969<\/a>
<\/h2>\n

A DX Curtain for 15 Meters<\/h3> – An easy 3-4 db gain for you …… VE1TG 4

Tunnel Diodes-theory and Practical Application<\/h3> – Including a one transistor solar powered transmitter …… K8TSQ 8

The Magic T<\/h3> – Method for running rf transistors in parallel …… Thorpe 14

Uncle Will and News from the Poudre Valley<\/h3> – In dialect yet …… K0DVI 19

Basic Soldering Outfit<\/h3> – Good Lord! Another article on soldering! …… W1EZT 20

Light Naturally Runs Down<\/h3> – A special Scientific American type feature …… K1CLL 24

Cable Pickup and Shielding<\/h3> – Keeping interference to an absolute minimum …… W2EEY\/1 36

WWV-pioneer in Standards Broadcasting<\/h3> – Perhaps you’ve heard the catchy tune they play …… WA1AAU 39

Basic Theory and Application of Transistors<\/h3> – Something you have always wanted to know …… WA1FHJ 42

Series Gate Solid State<\/h3> – Clipper …… K6ZFV 50

Improving NC-300 SSB Reception<\/h3> – It was good but it can be very good …… W1OOP 52

AFSK Generator<\/h3> – Crystal controlled using digital IC’s no less …… W1ESH 53

Transistor Transmitter Aspirin<\/h3> – How to keep from westernizing your transistors …… K0VQY 64

Improvement of Phone Intelligibility by Base Clipping<\/h3> – Discussion of base clipping …… Ives 68

Measurement of Meter Resistance<\/h3> – Making it possible to versatilize your meters …… WA6NIL 72

Diode-stack Power Supplies-the Easy Way<\/h3> – Instant operation of the Henry 2K and other rigs …… K6KA 74

Transistor Testing Techniques<\/h3> – Testing with a vom without destruction …… W9KXJ 76

2 1\/2 W Transmitter<\/h3> – Work the world with this three transistor rig …… K0VQY 78

Neutralizing the HX-10<\/h3> – Simple way to stabilize this rig …… W2PQG 80

More Taylor Modulation<\/h3> – Remember that AM is still going strong on VHF …… DL5KS 84

An Audio Sinusoid Generator<\/h3> – Two IC’s …… W5FOO 88

Capacitor Usage and Electron Flow<\/h3> – Where to use what capacitor and why …… W0HMK 90

What About FM?<\/h3> – We’ll have you on FM within the year …… W9VZR 96

A Primer on Radio Propagation<\/h3> – If signals really do bounce this is how it works …… WA1GEK 98

Measurement of Percentage of Modulation<\/h3> – Of AM transmitters…… Granger 106

Extra Class License Course Part VIII<\/h3> – let’s get cracking …… Staff 108

Big Signal-good Looks<\/h3> – 3-400Z kilowatt Linear …… WA7AIA 124

A New Vidicon Camera for ATV<\/h3> – Isn’t it time you tried your hand at ham TV? …… W8VCO 129

Two More Transistor Testers<\/h3> – Handy jf you by your transistors by the bag full …… W9DJZ 133

The FETCompressor<\/h3> – Audio compressor using two FET’s …… WA0IOC 139

The Mike Mixmaster<\/h3> – Just like a broadcast station …… WA2YRF 140

The T-60 Works Just Fine<\/h3> – Part XVII of our Novice Instruction Manual …… WA1GEK 142

Leaky Lines<\/h3> – Not to be confused with columns in other magazines …… K2AGZ 144

A Unique RF Plate Choke<\/h3> – Actually it isn’t really all that unique …… W6RET 147

Modification of the ac Input on the SB-200<\/h3> – Published by popular demand …… K3KMO 148
\n
\n

73 Ham Radio Today Issue October 1969<\/a>
<\/h2>\n

A Super-gain Antenna for 40 Meters<\/h3> – Nine db on 40 meters might be called “super” …… W4NVK 8

DX Corner<\/h3> – WTW reports and other DX jazz …… K2AGZ 12

FET Chirper<\/h3> – Signal source for peaking converters for optimum signal\/noise …… K6QKL 20

The Inside Info on Alexander Graham<\/h3> – Or how the telephone really works …… W2FEZ 24

Leaky Lines<\/h3> – Similar to “Grumbles ” but by a licensed amateur not a CB’er …… K2AGZ 28

Scope Calibrator<\/h3> – Gadget you can build to improve your scope …… WlOLP 32

Vidiots That Have Known Me<\/h3> – Sense of humor test. If you flunk go back to 11 meters …… K1YSD 34

The Protector<\/h3> – Protects your gear from sudden line voltage surges and interruptions …… WA0HKC 40

Slower Tuning Rates for Older Receivers<\/h3> – Just like band spread …… W4RNL 42

Positive Identification of Calibrator Harmonics<\/h3> – Keeps you off 6950 and other poor DX bands …… K5LLI 46

Adapting AM Transmitters to FM<\/h3> – Good Heavens is everyone going on VHF FM? …… WA4UZM 50

CB Sets on Six<\/h3> – No need to junk that CB rig when you get your Tech ticket …… WB2FHW 52

Proportional Control Crystal Oven<\/h3> – You need this sort of thing for moonbounce work and such …… W2CLL 54

A Crystal Filter Phasing Control<\/h3> – Look at the i-f response in Fig. 10 and be amazed …… W2LT 58

Grounded Grid Filament Chokes<\/h3> – You need these for linear amplifiers …… W2IK 62

Equipment Cabinets with Style<\/h3> – Make it look commercial …… W2OLP 64

VHF-fM: Part I<\/h3> – Advantages and practices. When are you going on FM? …… WB2AEB 66

Bring Back the Q Multiplier<\/h3> – Invaluable for CW notches out AM carriers etc …… W8RHR 68

Activation in VP2<\/h3> – Anguilla Island activated …… VP2AC 70

The CR Beam<\/h3> – Two meter corner reflector beam …… WA4FDQ 73

The ARRL Board and Amateur Radio<\/h3> – An ex-aRRL Director evaluates the latest board meeting …… W7ZC 76

A Cheap and Easy Power Supply<\/h3> – For a sideband transceiver …… K4FQU 83

Extra Class License Course Part IX<\/h3> – Modulation. We’ll have lots of arguments on this one …… Staff 86

Ham Jamboree<\/h3> – Scouts hit the ham bands every October …… WB6IZF 108

Operation Cat’s Paw<\/h3> – Whimsy …… W7ZC 116

Knight V-l07 VFO for Six and Two Meters<\/h3> – Test report by a happy user …… K6GKX 123

Careers in the FAA<\/h3> – Get on the government payroll …… W6JTT 124

Youth Forum<\/h3> – Teenagers arise! …… WA1GEK 132
\n
\n

73 Ham Radio Today Issue November 1969<\/a>
<\/h2>\n

An Approach to Six-meter SSB<\/h3> – Using an NCX-3 or other SSB transceiver …… WA1FRJ 6

IF Notch Filter<\/h3> – For the last word in selectivity for your transceiver …… W2EEY 14

Calibrate That Homebrew Dial<\/h3> – Accurate calibrations on any band …… K9STH 18

Slow Scan Color Pictures<\/h3> – Using additive synthesis …… WA2EMC 20

A Remote VFO for the HW32A<\/h3> – Split frequency operation simplified …… AP2MR 22

Cheap and Simple for Six<\/h3> – Three transistor PC board converter …… WB6BIH 25

The Mismatched rf Transmission line<\/h3> – High SWR makes no difference at all hardly …… W5JJ 28

BKX Bridge<\/h3> – RF bridge modelled after the General Radio bridge …… W8BKX 32

Religion Politics or Sex<\/h3> – And other QST-approved QSO topics …… W1DIS 40

VHF-fM: Part II Mobile Installations<\/h3> – Another chapter in our effort to get you on FM …… WB2AEB 44

The Umbrella Antenna<\/h3> – Efficient antenna for 40-80-160M …… W2EEY 46

Solid State 432’er Transmitter<\/h3> – Three transistor converter …… K1CLL 50

Fascinating Fundamentals I: Electrostatics<\/h3> – Elektron is Greek for “amber.” …… W2FEZ 56

Apollo TV & Radio<\/h3> – Details on the radio end of the moon trip …… WlFJE 58

The Receiver – The Overlooked Piece of Test Equipment<\/h3> – Handy …… K1ZJH 60

A Voltage Sextupler Power Supply<\/h3> – QST would never publish anything this Sexy …… W5NGX 62

The Unikey<\/h3> – If you are a CW man this’ll get you …… K9MLD 66

Transistor Power Supplies<\/h3> – Robbing power from the rig or receiver …… K6KA 72

Bias Design Without Curves<\/h3> – Transistors just won’t make it without the right bias …… WB6BIH 74

FM Receiver Tweeker<\/h3> – Alignment gadget for FM receivers …… K6UAW 80

A Mate for the Swan 350<\/h3> – Adapting the Swan TCU unit to the 350 …… WB2MPZ 82

The Ball of Wax – A Calibrator<\/h3> – 200- 100-50-25 khz calibrator on PC board …… W6GXN 84

Electronic Variac<\/h3> – Using a Triac …… K9JSC 88

SB-33 Modification<\/h3> – Adding a Calibrator CW coverage etc …… W4MNW 90

Call Lettering Lunacy<\/h3> – Being about broadcast station call letters and such …… Moshcovitz 94

Extra Class License Course Part X<\/h3> – You should be able to pass the exam by now …… Staff 98

SBE Improvements Made Easy<\/h3> – Bunch of ideas for the SB-34 owner …… W6JDD 122
\n
\n

73 Ham Radio Today Issue December 1969<\/a>
<\/h2>\n

Quick Easy Dependable Transistor Diode Checker<\/h3> – For those who like checkered diodes …… W6ICC 6

Did Samuel Morse Really Invent the Telegraph?<\/h3> – Telegraph? What’s that? …… W2FEZ 10

Combination Dummy Load\/attenuator Network<\/h3> – Also doubles as a hot plate for your coffee warming …… W2EEY 14

Tuned Filter Chokes – The Easy Way<\/h3> – Can your filter chokes carry a tune? …… W2OLU 18

Hey OM – You’ve Got Carrier There<\/h3> – “Drop dead you knit-picker.” …… W4NVK 22

Bandswitching the Swan-250 and TV-2<\/h3> – For both six and two meter operation lickety-split …… K3LNZ 26

Cheap and Easy Selectivity<\/h3> – A CW audio filter for under $10. Cheap enough …… W5INU 28

VHF-fM – Part III : Hand Held Portables<\/h3> – Part 3 in our effort to brainwash you in to trying FM …… WB2AEB 30

Sunspots and the Ham<\/h3> – If you can’t beat ’em join ’em …… WB2VFX 32

SSTV<\/h3> – Lecture at the International Congress of Amateur Television …… SM0BUO 34

Amateur Radio in the Classroom<\/h3> – Drives the kids right out of their everlasting minds …… K0HUD 40

The Galaxy RV-550 Remote VFO<\/h3> – Test Report from an excited and happy user …… W6AJZ 48

Calculation Made a Little Easier<\/h3> – Stuff our dumb high schools should have taught …… W1EZT 50

Universal Dual-frequency Crystal Calibrator<\/h3> – Using those new IC circuits …… W2EEY 58

Versatilize Your Transceiver<\/h3> – Adding incremental tuning a blessing in no disguise …… VE3ECU\/w0 62

Transistor Class B and C Power Amplifier Design<\/h3> – Slide rule lovers arise and rejoice… an article for you! …… VK3ZRY 64

Two for Mobile<\/h3> – Power supplies not a love story …… K6ZFV 70

Amateur Microwave Frequency Meter<\/h3> – 1 to 10 ghz. Simple but necessary test equipment for ghz tinkerers …… K1CLL 72

Audio Organizer<\/h3> – Nice companion unit for the station transceiver …… WB2WYO 77

Converting a CB Transceiver to Six Meters<\/h3> – What else can you do with them? …… WB6BIH 78

Extra Class License Course Part XI<\/h3> – Oscillators …… Staff 82

Topographical Maps for the Radio Amateur<\/h3> – For transmitter hunts and other hammy applications …… W9VZR 102

Fascinating Fundamentals III : Magnetism<\/h3> – An irrelevant dip into history …… W2FEZ 10
\n
\n

73 Ham Radio Today Issue January 1970<\/a>
<\/h2>\n

Single Sideband AM-fM Modulation System<\/h3> – Using easily available filters …… W2BSP 4

The Transceiver Companion<\/h3> – Does everything but change the baby …… W6AJZ 10

A Simple Bench Power Supply<\/h3> – For those readers with simple benches …… ZL2AMJ 22

Slow Scan Color Transmission<\/h3> – See cover for illustration of results …… Tarr W4UMF 28

Fascinating Fundamentals : Volta and His Piles<\/h3> – Zap! …… W2FEZ 36

The Manuscript Game<\/h3> – Another construction article flushed out …… K6MVH 40

Base-tuned Center-loaded Antenna<\/h3> – Vertical antennas are not basically bad …… W2EEY 42

Quazar QRP 40 Meter DSB Transmitter<\/h3> – Solid state to boot …… WA5WWN 46

Simple Compact Six Meter Bandpass Filter<\/h3> – Cuts down your channel 2 DX …… WA5SWD\/6 48

Low-cost Electronics: Japan’s FM Invasion<\/h3> – FM Changes from surplus to imports …… K6MVH 50

Mobile CW<\/h3> – On the freeways no less! …… K6RA 54

Extra Class License Course Part XII<\/h3> – Semiconductors. Last chance to learn this …… Staff 57

A Pre-amplifier for Ten-meter Bands<\/h3> – Also works on CB but don’t tell anyone …… WA3HMN 76

Proper Use of Silicon Rectifier Diodes<\/h3> – Diode poppers arise stamp out this stuff …… K3DPJ WA3ACL 77

Converting the 4CX1 000A into a Lamp<\/h3> – Excellent application for your spare tubes …… K3QKO 80

Facsimile and the Radio Amateur<\/h3> – Are you missing out on FAX fun? …… K6GKX 82

Tunable Solid State IF<\/h3> – 28-30 MHz i-f for use with UHF converters …… K1CLL 88
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\n

73 Ham Radio Today Issue February 1970<\/a>
<\/h2>\n

Fascinating Fundamentals<\/h3> – The Terrible Jar at Leyden …… W2FEZ 14

18 in. Dipole on 15 Meters<\/h3> – February Fool article? Heh heh! …… K9LGH 24

High Performance Converter for 6<\/h3> – 73 drags its heels into the 70’s with a tube …… WA9HES 30

From Breadboard to Printed Circuit – The Easy Way<\/h3> – And it is easy for once …… K1AOB 36

The Camper: Mobile and Portable<\/h3> – Enradioifying the VW bus …… WA9EHE 40

So You Think You Have Troubles?<\/h3> – Cutting blind ham’s antennas for fun …… W1EMV 43

Frequency Synthesis – The Modern Way<\/h3> – Special book-length feature for FM fiends …… W2EUP 44

Encoding and Decoding in FM Repeaters Part I<\/h3> – Encoders for Subaudible Tone-burst or Whistle-on Use …… W6ZCL 72

Encoding and Decoding in FM Repeaters Part II<\/h3> – Tone Decoder for Remote Switching Applications …… K6MVH 80

Encoding and Decoding in FM Repeaters Part III<\/h3> – Setting Up the Tone-burst System …… W6TEE 82

How to Visit Foreign Countries<\/h3> – Using ham radio to make travel funner …… W2NSD 84

The DX-35 Revisited<\/h3> – Exciting development for chirp haters …… W2AOO 86

Panoramic Receiver for VHF<\/h3> – For 2 meter busybodies …… I1SL0 88

Variable-impedance Mobile Mount<\/h3> – Out damned reactance! …… W1EMV 96

Lossy Transmission lines<\/h3> – A shorty short …… KH6IJ\/1 97

Extra Class Study Course Part 13<\/h3> – RTTY FSK filters and other such trivia …… Staff 98

New Linear IC’s for the Ham<\/h3> – Cheap-new-hot-have fun …… WA4KRE 115

The Glop Will Get You If You Don’t Watch Out!<\/h3> – Watch out! …… W2ELU 126

DX as seen by<\/h3> – Cartoon feature …… W6EIF 130

The Micromitter<\/h3> – World’s cheapest rig …… WA3GGH 131

A Simple Integrated Circuit Q-multiplier<\/h3> – Makes the CW band ten times wider …… W2EEY 134

Quick Stop and Reversing for Antenna Rotors<\/h3> – Whipping antenna whip …… PY2AUC 137
\n
\n

73 Ham Radio Today Issue March 1970<\/a>
<\/h2>\n

Extra Services From Your Grid Dip Oscillator<\/h3> – Like checking crystals tuning FM receivers and such …… WA4UZM 18

Reverse-current Charging<\/h3> – Turns out you really can recharge flashlight batteries! …… K8YUC 20

A Poor Man’s Frequency Meter<\/h3> – Combines surplus from two services …… W6YAN 24

Professional PCs From Roll-Your-own Negs<\/h3> – Eliminates drafting camera work and darkroom entirely …… K6MVH 29

How I Read The R.O.’s Handbook & Found Happiness<\/h3> – Instant profundity …… Johnson 36

A Look At Amateur FM Standards<\/h3> – Or how do we get out of this mess? …… WB6DJT 38

An Inexpensive RF Wattmeter<\/h3> – Surplus meter for those too cheap to buy a regular wattmeter …… WB4MYL 43

A Remote Multifrequency Oscillator For Surplus FM Units<\/h3> – Drive people crazy on lots more FM channels with this …… W2ACM 44

Add Spotting to Your VFO<\/h3> – If your VFO is unspotted …… K8BYO 49

Towards an Ideal Solid-state I-f For Amateurs<\/h3> – Closing in on the state of the art with Bill Hoisington …… K1CLL 50

Ham Exchange<\/h3> – Visiting foreign amateurs makes trips more enjoyable …… WA2ELA 58

Super Sixer<\/h3> – Heath wouldn’t recognize it …… WA3AQS 60

Bob Bob Bobbin’ Along<\/h3> – Special April feature article. Well it’s almost April …… K1YSD 62

The Dip Light<\/h3> – A grid-dip meter with no grid and no meter …… VE3ECU 68

73 Checks Out The Kris Scanning Receiver<\/h3> – Snazzy …… Staff 70

Two Conversions For The Motorola 41 V – Part 1:<\/h3> AC Power Supply …… K9PKQ 72

Two Conversions For The Motorola 41 V – Part 2:<\/h3> 6 to 12V Filament Conversion – Here’s the surplus if you want to make an issue out of it …… W6YAN 74

A CW Monitor<\/h3> – Using a 98 cent audio module you cheapskates …… WB2GQV 76

The Logical Approach To Surplus Buying<\/h3> – Here’s your key to fun with those surplus logic circuits …… Kyle 80

Converting The Sonobuoy to a 2W FM Rig<\/h3> – Two meters. Why not have some fun with this one? …… W1BYX 96

Easy Diode Testing<\/h3> – Checking out those bargain diodes …… K4JK 97

Turning The AN\/gRC-9 Into a Novice Rig<\/h3> – 2-12 MHz transmitter-receiver …… W6JTT 98

Extra Class Study Course Part XIV<\/h3> – Measurements …… Staff 104

VHF-fM And You<\/h3> – Part of our Encyclopedia of FM; a good part …… K9STH 118
\n
\n

73 Ham Radio Today Issue April 1970<\/a>
<\/h2>\n

A Noise Blanker That Works<\/h3> – As opposed to that crummy one in Brand X that doesn’t work. And can be added to your present receiver easily …… W8RHR 17

Hot Carrier Diode Mixer Converter<\/h3> – This is not an April Fool article …… WA6NCT 20

Examining FM Repeater Operation<\/h3> – History of repeaters ARRL involvement and legal problems …… WB6DJT 28

A Repeater Controller<\/h3> – Tone generator timer identifier the lot …… WA4YND 34

Understanding the Carrier Operated Repeater<\/h3> – Some of them take a good deal of understanding …… K6MVH 41

Evaluation: Standard 2M FM 12 Channel Receiver<\/h3> – Okay …… W6QGN 46

7\/8 Wave Mobile Antenna for 2 Meters<\/h3> – Why have a puny signal when you can have a mediocre signal …… W2EUP 50

How Do Ham Stores Decide Their Trade-in Figures?<\/h3> – $200 for your S-38? …… W2CFP 55

Beryllia- The Lethal Refractory<\/h3> – Worse than cyclamates …… WB2PAP 58

Getting Your Extra Class License Part XV<\/h3> – Spurious radiation is covered …… Staff 62

A Work Session On The Wichita Repeater<\/h3> – If anything can go wrong …… W0DKU 78

In expensive Semiconductors for the Ham<\/h3> – Giant Motorola ad that we paid for …… WA7KRE 81

Renovating Surplus Meters<\/h3> – Making new scales for meters calibrating and like that …… WA0ABI 84

A Bias Regulator for Linears<\/h3> – Simple gadget makes Class B linears practical …… ZL2ANG 86

High Performance I-f and AGC System<\/h3> – Particularly for CW and SSB …… ZL2BDB 89

Single Sideband on the All-wave Radio<\/h3> – One transistor BFO and no connections …… W7CSD 94

Vacuum Tube Load Box<\/h3> – Invaluable for testing power supplies. Invaluable …… Ashe 96

Repeater Directory<\/h3> – Special book length feature with photos coverage maps and access data …… Staff 99

A Word About Repeaters<\/h3> – A special featurette …… WB2AEB 100

The Fine Points Of FM Operation<\/h3> – Getting on frequency and other fine points …… WB2AEB 121

How To Megger Your Antenna<\/h3> – It’s not dirty …… W2EEY 125
\n
\n

73 Ham Radio Today Issue May 1970<\/a>
<\/h2>\n

73 Comments on FCC’s Proposed Repeater Rules<\/h3> – Passage as proposed could be catastrophic …… Staff 20

What Will Become of CW?<\/h3> – What became of the passenger pigeon? …… W5TOM 30

FM-aM Transmitter-receiver Aligner<\/h3> – Two transistors any band HF or VHF simple useful …… W3JKL 34

5\/8 Wavelength Verticals<\/h3> – Twice as good as a Quarter-wave …… WA0NGV 36

The Intelligent Use of Two Meters FM<\/h3> – It is possible ……K1ZJH 40

Plus 10 dB<\/h3> – The October ’68 article was better illustrated …… W2OLU 46

A Ham-style Burglar Alarm for the Car<\/h3> – First take two sticks of dynamite then …… K2JLD 48

Power Supplies From Surplus Components<\/h3> – Cheapskates’ power supply manual …… WB6BIH 50

RF Riviera Style<\/h3> – Quieting Buick’s super noise generator …… K9BDJ 58

Keep ’em Cool In KPO Cans<\/h3> – Cheaper than blowing your cool …… G3KPO 60

Towards The Ideal Solid-state I-f Part II – Filter Converter AVC<\/h3> – State-of-the-art for VHF …… K1CLL 62

Epoxies for Electronics<\/h3> – Cold solder joints become respectable at last …… W9KXJ 73

FET Pre-amplifiers For VHF Operation<\/h3> – 20 dB gain = 100 times the power! ……WA4WDK 74

Educated Idiot Lights<\/h3> – Like the oil light indicating your engine just burned out …… Holford 78

Postage Stamp Transmitter for Six<\/h3> – Shades of Dick Tracy …… K1CLL 80

Getting Your Extra Class License Part XVI<\/h3> – RF power amplifiers …… Staff 88

The 27-minute Mobile Noise Limiter<\/h3> – If you build it right it may last even longer …… W7SOH 102

A Low -band Police Monitor<\/h3> – For emergency CD or SDS use …… W6JTT 106

A Mobile CW Transmitter<\/h3> – Gives a driver something to do with his two free hands …… W6BLZ 108

An FM “Best Buy”<\/h3> – You have an FM ed itor and you have FM articles …… WA7EMM 112

Science Fairs: Science Education<\/h3> – By the Science Editor of Radio Today …… Staff 116

The Wichita Autopatch<\/h3> – Telephone through a 2m FM repeater (while you still can) …… W0DKU 118

London’s Science Museum Demonstration Station<\/h3> – GB2SM …… Ellison 125

Try Bigger Knobs For Better Operating Performance<\/h3> – Tiny knobs cramp your style…and fingers …… WB2ICV 129
\n
\n

73 Ham Radio Today Issue June 1970<\/a>
<\/h2>\n

A Practical DDRR Antenna<\/h3> – Expensive difficult-to-build mediocre antenna …… W6WYQ 20

VFO Circuit<\/h3> – In case you are tired of crystal control …… K0HVK 36

The Low-Noise Antenna<\/h3> – High noise you’re looking for? …… WB6JNI 39

Experimental Remote SWR Indicator<\/h3> – Experimental means we think it might work …… W2EEY 41

The Little Wonder: Mark 11<\/h3> – Proving again that almost anything will radiate …… W5ZBC 46

CW Can Be Fun (With the Ord DK-1)<\/h3> – if you know the code …… Staff 48

Two Receivers From One Antenna<\/h3> – Without suckout (tsk) …… WA6UFW 49

Factors in Coaxial Cable Loss<\/h3> – Like temperature and frequency …… W9KXJ 50

Improving Trap-type Vertical Antennas<\/h3> – By adding an element …… W2EEY 52

Measuring Incident and Reflected RF<\/h3> – It’s the difference th at counts …… VE7BS 56

Government Surplus Straight from the Horse’s Mouth<\/h3> – Hay Hay! …… WA9ANW 58

QRP<\/h3> – 40m with 40 mW …… WA3JBN 62

Ground Support for the Powder Puff Derby<\/h3> – Public service and politics …… W7ZC 64

Coax Adapter VHF to BNC<\/h3> – For 75 cents …… W9MEV 73

The Sly Beam<\/h3> – 32 elements on 2 meters …… ZL4TAH 74

Three Unrelated Articles; Installing the Swan 250-c Noise Silencer; Measuring Rf Output; Useful Cable Clamps<\/h3> …… WA6CPP 80

1\/4 Wave Top-loaded Mobile Antenna<\/h3> – F or 20 meters …… W5AZE 83

11 Element 2 Meter Circular Quad<\/h3> – 9 dB forward gain …… W4KAE 86

The 633<\/h3> – For 10 15 & 20 meters …… ZL2ASJ 92

73 Tests the Grundig Satellite Receiver<\/h3> – Tunes in CW SSB FM and everything! …… Staff 97

104 De-rF Your VTVM<\/h3> – Works better …… WA0FFJ

Getting Your Extra Class License Part XVII: Conclusion<\/h3> – Now go! …… Staff 105

Special Antenna Catalog Section<\/h3> – For your reference pleasure …… 117

More Accuracy on Microwaves<\/h3> – Improvement on December wavemeter …… Goldstein 142
\n
\n

73 Ham Radio Today Issue July 1970<\/a>
<\/h2>\n

Improved Color Slow-scan Television<\/h3> – Using Polaroid films …… W4UMF 18

Worldwide ITU Prefix\/call Area List<\/h3> – Call prefix allocations …… W1SWX 24

The Super Autopatch<\/h3> – Telephoning from your FM mobile …… K6MVH 26

How to Build a Keyer<\/h3> – And still retain your appliance-operator status …… W9KXJ 36

A 2-channel Search- Lock for FM Receivers<\/h3> – Listening to two repeaters at once …… W3DTN 38

A Look at Allied’s Portable FM Receivers<\/h3> – Under $20 …… K9STH 44

450 MHz Mighty Mite<\/h3> – One transistor superregenerative receiver …… K9VXL 46

Cheapie 6-meter Half-gallon<\/h3> – Use 811-as and be heard …… K1CLL 48

A High Performance Power Supply<\/h3> – Using an IC voltage regulator …… K0ECF\/7 54

A Soldering Gun Tip<\/h3> – New SCR-522 conversion article …… WB6PKA 59

Latham Island DXpedition<\/h3> – This Zanzibar isle is for the birds …… 5H3LV 60

Study Guide For Your General Class License: Part I<\/h3> – Okay Techs here it is! …… Staff 66

DB to Power<\/h3> …… WA3JBN 85

Protection For Grid Dipper Coils<\/h3> – Low-cost insurance policy …… WA0ABI 88

Mobile CW Receiver<\/h3> – But where do you mount the code mill? …… W6BLZ 90

QSLing Ham Radio’s Own Con Game<\/h3> – Not for pecuniar interest eh? …… VK4SS 96
\n
\n

73 Ham Radio Today Issue August 1970<\/a>
<\/h2>\n

Mount That Mobile Right!<\/h3> – There are a lot of ways of doing it wrong; just ask most mobile ops …… K4IPV 14

Amateur Wattmeter for $3.85<\/h3> – Unless you’d rather shell out umpteen bucks for a Bird wattmeter …… K1CLL 20

The Consummate Console<\/h3> – Be the envy of every ham in town. Even your wife might warm just a little …… WB2FBF 22

An Impedance Multiplier for the VOM<\/h3> – How to make your VOM read like a VTVM or such …… K6DQB 27

Repeater Audio: Time Out for Quality<\/h3> – Hifi on FM? We sure can use it in place of that pilot-to-bombardier quality we hear so often now …… K6MVH 31

ATV: Getting a Better Picture<\/h3> – Improving antennas feeders and converters …… WA6BJV 34

That Contest Craze<\/h3> – Fiction? …… VK4SS 40

Log Periodic Antenna Designs for UHF\/vHF<\/h3> – Cover feature …… W3DUQ 45

Ham Radio Chess<\/h3> – One hundred chess games on one frequency generate less QRM than one lid reciting his stupid “lineup” …… W0BMW 48

Knight Kit KG-696 Rf Generator Kit Review<\/h3> – Reader test report …… W9KXJ 52

A VHF AM Transmitter<\/h3> – Using low-cost transistors …… Brubaker 54

Raising a Rhombic<\/h3> – First take an acre or so of land add one rhombic etc …… W8DYF 60

TVI From An Antenna Rotator<\/h3> – What next? What next? …… W3URE 65

The ICmitter<\/h3> – AM o r CW on 20- 160 meters …… Goldstein 67

General Class Study Course Part II<\/h3> – Reactance exposed as resistance in disguise …… Staff 68

Perkins Radio Club and K1TPX<\/h3> – Radio club for the blind …… Champagne 87
\n
\n

73 Ham Radio Today Issue September 1970<\/a>
<\/h2>\n

Integrated Circuit CW ID Generator<\/h3> – Automatic identification for your station …… W7PUG 16

Six Volts From Twelve Volts<\/h3> – Six buck solid state voltage dropper …… K3GSV 26

The Indicating Oscillator<\/h3> – Another dipper circuit 1-400 MHz …… KH6AF 29

Tuning VHF Receivers<\/h3> – Clever infinite attenuator and oscillator unit …… K1CLL 32

Code Practice a la Baby Talk<\/h3> – Everybody’s doing it …… W9PXA 35

Using Those Bargain ICs<\/h3> – Three testers will test most ICs you will encounter …… WA2IKL 38

Repeater Antenna Separation<\/h3> – One of the easiest ways to improve repeater range …… K6MVH 45

Diode Stacks<\/h3> – Replacing those high-power rectifier tubes …… W2BDG 54

Deluxe Receiver Gain Control<\/h3> – Using one transistor and a zener …… VU2JN 56

A New Approach to Communications Equipment<\/h3> – A call for manufacturer standardization …… K9ALD 60

Reed Relays for Coaxial Switching<\/h3> – Work very well for UHF low-power applications …… W7CRV 64

File Box Resistance Decade<\/h3> – First in a series of file box test gear …… WB4ITN 66

The DyComm VHF-fM RF Amplifier<\/h3> – Transistorized 15 watts out …… Staff 70

General Class License Study Course<\/h3> – Part II Alternating Current …… Staff 74

What Really Happened to Hamdom?<\/h3> – The horrible truth about CB …… W9HBF 82

Beer Can Two-meter Coaxial Antenna<\/h3> – Drink you way to a good signal …… WA0RWQ\/6 86

Converting 24V Relays to 115 VAC<\/h3> – using a couple of cheap diodes …… Douglas 88

Versatile 2m MOSFET Converter<\/h3> – Low noise high gain ultra stable …… WB6YVT 90
\n
\n

73 Ham Radio Today Issue October 1970<\/a>
<\/h2>\n

Understanding ICs<\/h3> – Nice National Semiconductor ad …… W6DNS 16

ICs for Amateur Use<\/h3> – Nice Amperex ad …… K1CLL 22

IC Regulator Circuits<\/h3> – Nice RCA ad …… WB2EGZ 32

Camouflage<\/h3> – Cutting down on fur coat money …… K9AZG 40

Phase-locked Loop<\/h3> – Does every thing better than Mr. Clean …… K5JKX 42

Function Generator<\/h3> – .01 Hz to 4 kHz generator …… WA2IKL 58

Toning Repeaters<\/h3> – How why and the gadget to do it …… K6MVH 64

IC Power Source<\/h3> – Simple regulator …… W1RAN 69

Solid-state Timer<\/h3> – Ten minutes …… WB4MYL 70

Four-wire Inverted Vee<\/h3> – Better than average antenna …… WA6COB 72

IC Marker Generator<\/h3> – 200 – 100 – 50 – 25 kHz …… K4BBC 75

Improving Regulation<\/h3> – In solid-state high voltage supplies …… K6BW 77

General Class Study Guide<\/h3> – Part III – Power …… Staff 78

DXing In Roumania<\/h3> – Peking behind the iron curtain …… YO2BO 96
\n
\n

73 Ham Radio Today Issue November 1970<\/a>
<\/h2>\n

Differential J-fET Pre-amplifier<\/h3> – Now hear stations before they come on the air! …… W4KAE 16

Dual Gate MOSFET<\/h3> – Rendering single gaters obsolete? …… WB2WYO 22

Remote Quad Tuning<\/h3> – From the shack …… W6AJZ 27

Two-watt Six-meter Transmitter<\/h3> – Using the crystal- heterodyne VFO …… KlCLL 30

Semiautomatic FM Channel Scanning<\/h3> – What another FM article? Yup! …… WA0QPM 38

Low Cost Automatic Keyer<\/h3> – An excellent “first project” …… WB4MYL 42

AC Switching with Self-powered ICs<\/h3> – Clever zero voltage switch …… W2FBW 48

Pioneer Radio on the Prairies<\/h3> – What it was like 45 years ago …… W6CXC 54

SST-i Solid State Transceiver for 40 Meters<\/h3> – Now here is a real fun project …… W9ZTK 64

A Low-cost RF Wattmeter<\/h3> – Novice simple Generally useful Extra accurate …… WA3AJR 72

Calibrate That Calibrator<\/h3> – Thus rendering it even more useful …… W2KPE 77

General Class Study Guide: Part IV<\/h3> – Impedance matching etc …… Staff 80
\n
\n

73 Ham Radio Today Issue December 1970<\/a>
<\/h2>\n

Solid State Exciters<\/h3> – For the build-don’t-buy crowd …… W6YUY 16

Solid State Control for SSB Exciters<\/h3> – For really smooth tuning …… W4NVK 28

Hams Are A Funny Bunch of People<\/h3> – Except me and thee …… K3KMO 31

A 2 Meter Minitransmitter<\/h3> – Hand portable for FM repeaters …… WB6BIH 32

Receiver Offset Tuning for the HW100<\/h3> – For tuning in old timers who can’t stay on frequency …… WAZEAW 39

The Little Gate Dipper<\/h3> – 1.7 – 225 MHz GDO with no G …… W5ETT 44

Clinks In A Vacuum<\/h3> – The wife’s view of amateur radio …… Derfler 48

Your Second Linear<\/h3> – Using the fabulous RCA 3-500Z …… W4AYI 51

General Class Study Course<\/h3> – Vacuum tubes… remember them? …… Staff 75

Yipes it Talks<\/h3> – Start le your friends …… W2FEZ 94

Regency -an FM Late Starter<\/h3> – Wow! …… K6MVH 96

Transi-test<\/h3> – Transistor tester simple …… W6QPP 101

Two Terminal Current Limiter<\/h3> – Most have three so this is a step ahead right? …… Beene 107

Index to Articles in 1970<\/h3> – Ridiculously detailed yearly index …… 108
\n
\n

73 Ham Radio Today Issue January 1971<\/a>
<\/h2>\n

LX for Leisure<\/h3> – A relaxed DXpedition to Luxembourg …… G3BID 18

Try DXing the World the Hard Way!<\/h3> – Around the world in 90 frustrations …… K6KA 22

Split Phones – A DX Operating Aid<\/h3> – You’ve got two ears? Why not use them both? …… GW8PG 30

Can Ham Radio Manufacturing Survive?<\/h3> – Maybe …… Staff 35

Heath Tener Modification<\/h3> – Bigger fuse …… K8JLK 45

Testing the RP Electronics Compressor<\/h3> – Cheapest wav to double your power …… Staff 46

For the Love of a Ham<\/h3> – Show this to a wife (your own preferably) …… WB6AOF 48

Duty Cycle Duty Factor<\/h3> – It is your duty to read this …… W2OLU 50

Repeater Zero Beater<\/h3> – An FM article? You bet! …… W1IRH 52

Getting Hep to ICs<\/h3> – Pun intended …… K6MVH 56

Voices from the Past<\/h3> – Ten thirty fifty years ago today …… Staff 62

Basics of Surplus FM<\/h3> – Another FM article? What else? …… WB2AEB 64

A Parabolic Beam for 10 15 or 20 Meters<\/h3> – Big …… WA2SJZ 66

The Galaxy PM 210<\/h3> – Even more FM? Right! U.S. made too …… K2ULR 69

Lightning as it Affects Ham Radio<\/h3> – It affects believe us it affects …… Patzsch 73

IC Receiver Accessory<\/h3> – Our old friend Select-o-ject in I.C …… W2EEY 76

Inverted Attic Antennas<\/h3> – TVI from the mystery neighbor …… W2SF 81

Double Balanced Mixers<\/h3> – The heart of SSB …… K2PUR 86

A Quick and Permanent Tool Marker<\/h3> – Tom Swift and his Electric Pencil …… K5JKX 91

There is a Santa …But!<\/h3> – Think before you pray …… W6LJZ 92

A New Start from Washington<\/h3> – An insider refutes QST December editorial …… W8GI 94

Amateur Study Guide Supplement<\/h3> – Q & A special with no A’s …… Staff 98
\n
\n

73 Ham Radio Today Issue February 1971<\/a>
<\/h2>\n

New Approach for the Metal Locator<\/h3> …… W6HDM 10

Practical Circuit Applications Using That Strange Didoe: The Varactor<\/h3> …… Mengel 16

A Clean AFSK Unit<\/h3> …… WB4FMP 22

An SSTV Patch Box<\/h3> …… W4UMF 26

Amateur TV Easy<\/h3> …… K2OJL 30

A Tuning Indicator for RTTY and FAX<\/h3> …… W1OER 34

Two Simple Tone Units For Repeater Use<\/h3> …… VE2BZK 36

On Efficiency Organization and Magazines<\/h3> …… WA3BKC 40

220 MHz Converter for FM Pocket Receivers<\/h3> …… K1CLL 42

Magnetic Deflection for SSTV<\/h3> …… WB2ZIV 46

Build an 8 Transistor Code Oscillator With Just One IC<\/h3> …… K6MVH 53

The Beeper<\/h3> …… K1ZJH 56

Study Guide- General Class License- Part VI<\/h3> – Gazintas and Gazoutas …… Staff 62

Phone Patch Level Adjustments and Manproofing<\/h3> …… W4NVK 78

Wouldn’t You Like To Get Into RTTY?<\/h3> …… WB2TCC 81

Perf-board Terminal<\/h3> …… K5LLI 83

Tuning All-band Vertical Antennas<\/h3> …… W5QKO\/aI4QKO 85

The Low-ohm Meter<\/h3> …… W3YZC 87

A Cheap and Easy Gus Watcher<\/h3> …… W9SDK 92
\n
\n

73 Ham Radio Today Issue March 1971<\/a>
<\/h2>\n

Integrated Circuit Audio Filter<\/h3> – Clean up that dirty audio with a filter …… W2EEY 12

Integrated Circuit Six Meter Converter<\/h3> – Not for bigots with six unconverted meters …… WB4KMB 16

Trap-type Vertical Antennas<\/h3> – Adding stubs for two meters. FM article …… W2EEY 18

Resurrecting Granddaddy<\/h3> – Fun with a 1925 parametric amplifier …… K6BIJ 22

Digital Counters<\/h3> – Five digit …… W0LMD 26

Identifying Surplus Electronic Equipment<\/h3> – Military marking system …… W6DDB 37

The Horizontal-output Linear<\/h3> – A $50 kilowatt amplifier? …… W2AOO 40

DX America First<\/h3> – DXpedition to Maine …… K1OXK 43

Phone Patch: No Cost No Wires<\/h3> – Phone patching is illegal in Rwanda. Too bad …… WA2EAW 49

Mt. Snow: To the Repeater<\/h3> – On Skis – Our cover feature. An FM article …… K6MVH 54

Repeater Audio Mixer<\/h3> – Another great FM article …… W1ELU 57

Something New in PC Construction<\/h3> – Building with scissors …… WA1EJU 61

Switching Remote Linears<\/h3> – Like in the car …… W0HFK 65

Digital RTTY Accessories<\/h3> – Regenerative repeater stunt box speed conversion …… K5ZBA 66

The Coathanger Groundplane<\/h3> – Two meters (FM!) …… K6MVH 72

General Class Study Course<\/h3> – Part VII. Power and how to get it ….. Staff 74

Reading 5 Code RTTY in Binary<\/h3> – Just what you’ve been waiting for …… WB2MPZ 93

Petitions to FCC – 220 MHz proposals<\/h3> …… Staff 118
\n
\n

73 Ham Radio Today Issue April 1971<\/a>
<\/h2>\n

What’s Really Different About FM?<\/h3> – A lot a whole lot! …… K6MVH 12

Aftermath: A Noise Blanker That Works<\/h3> – The author returns to the drawing board …… W8RHR 18

FM Intermodulation on 2m<\/h3> – Chart for locating interference sources …… W6YAN 20

Hotroddinq Motorola’s Hybrid HTs<\/h3> – A commercial bid for the 450 market …… W7PUG 28

Stability Without Crystals<\/h3> – Introducing the Sentry Modcom whatever that is …… Staff 30

Switching Remote Linears<\/h3> – or local linears …… W0HKF 32

Using Microwave for Repeater Links<\/h3> – Microwave propagation for any purpose really …… Lenkurt 34

IC Repeater Identifier<\/h3> – It will also identity any other station …… WB6BFM 49

Testing the National NCX 1000<\/h3> – And enjoying every minute of it …… W2NSD\/1 58

Build Your Own 2M FM<\/h3> – Build this little hand transceiver …… K1CLL 60

Repeater Directory for 1971<\/h3> – Every open repeater in North America listed here …… Staff 78

National FM Standards<\/h3> – FM channels on the VHF and UHF bands …… W6YAN 100

The FM-marketplace<\/h3> – Buyers’ guide to 2m FM transceivers …… Staff 102

Meter Evaluator<\/h3> – New and-much better way to measure meter resistance …… Marovitch 116

A Simple Varactor Modulator for Going FM<\/h3> – Changes AM rig to FM …… WA9TFY 121

FM Fun With a Scanner<\/h3> – Listening to eight channels at once …… Staff 122

Low Cost Signal Source<\/h3> – 1.8 to 450 MHz for tuning your receiver …… VE3GFW 124

Even More on Touchtone<\/h3> – Answers to your questions on Touchtone …… W1IRH 126

A Solid-state Preselector<\/h3> – Tubes you’re expecting? Read brand C magazine …… W5JJ 128

The Transistor 12 Watter for 10<\/h3> – Three transistors and a barrel of fun …… W5PAG 131

A Slice of Nippon Culture<\/h3> – How did an SWL article get into 73? Lordy! …… Staff 135

Ten Tee Receiver Test<\/h3> – Nice new portable receiver …… WB2MYU 138

Getting Publicity for Ham Radio<\/h3> – And boy! Can we use it! …… K0YTI 140
\n
\n

73 Ham Radio Today Issue May 1971<\/a>
<\/h2>\n

A Big Signal on 75M Mobile<\/h3> – Only 54″ long! …… W6MOG 14

A Dual Gate FET Preamp for 2 Meters<\/h3> – Do it yourself preamp for those too lazy to buy …… WB6BIH 20

A Neat and Novel Receiver Accessory<\/h3> – 73 finally invents the crystal calibrator …… WA6CPP 24

The Hartley Oscillator Story<\/h3> – Invented in 1914 and still with us …… K2SKV 28

The Widening World of Instant Replay<\/h3> – To videotape or not to videotape …… Staff 30

Design Concepts for Low-power Amplifiers<\/h3> – Using some new transistors …… Campbell Westlake 36

The Price of 10 Extra Feet<\/h3> – An epic in trivia …… K9PYY 39

A Transistorized 10 Meter DSB Transmitter<\/h3> – Four transistor rig …… K4EPI 40

Reviewing the 1971 Radio Amateurs Handbook<\/h3> – It’s okay …… WB2MYU 42

On the Spot<\/h3> – Report on LaBalsa ham-raft …… VK4SS 46

FM Walkie-talkie Transceiver Directory<\/h3> – Prediction: Walkie-talkies will be very popular …… Ralston 52

Advanced Preamp Compressor Clipper<\/h3> – Can also be used by Generals …… VE3GSP 56

The transistorized LM Freq Meter<\/h3> – 1971-izing this WWII goody …… W5SOT 60

Ham Radio the Bible and Peru<\/h3> – Ham radio in the interior …… OA8V 66

450 Remote Site Transmitter<\/h3> – Solid-state rig …… WA1HVG 69

The S-derived Filter<\/h3> – For cw audio filtering …… W3KBM 74

Electronic Health<\/h3> – A cure for cancer? …… Moore 76

Experimenter’s One-tube $10 2-meter Transceiver<\/h3> – If you like tubes …… W9HBF 78

Questions Questions Questions<\/h3> – And answers …… W9EGQ\/kHD6961 80

Understanding Your Amateur Radio Operator<\/h3> – XYL’s ham dictionary …… WA6JLJ 82

High Power Surplus for 2M FM<\/h3> – Very reasonably priced dB’s …… K6MVH 85

Evaluation of Swan’s 6 and 2 Meter Antennas<\/h3> – They work good …… WA6CPP 90

General Class Study Course: Part VIII<\/h3> – Transmitters …… Staff 94
\n
\n

73 Ham Radio Today Issue June 1971<\/a>
<\/h2>\n

Driven Versus Parasitic Antenna Elements on Two Meters<\/h3> – Are they really better? …… W6AJF 12

3 Squares for Two<\/h3> – Humdinger Quad …… K8CFY 18

I Can’t Learn the Code<\/h3> – Too bad. See you on eleven meters …… W0FEV 22

Covering Additional Frequencies With Dipoles<\/h3> – 40\/15m 80\/10m etc …… W9EGQ 26

Weather Balloon Verticals<\/h3> – The only way to go is up …… K4EPI 32

Squelch Addition for the Pocket Pager<\/h3> – You don’t have a pocket pager? …… WA8PIA 34

VFOing the Twoer<\/h3> – Drive your friends off two meters …… WA3WHI 40

Transmitter Tuning of Mobile Antennas<\/h3> – Loading coil final tank circuit …… W2EEY 44

I Built a Counter<\/h3> – The Heath. It works …… Sessions 48

Low Cost Transistor Power Supply<\/h3> – Also powers high cost transistors …… W8AVR 52

Don’t Trust the Ground Wire<\/h3> – Particularly if it is over 30 …… W5FQA 54

The File Box Capacity Decade<\/h3> – Handy …… WB4ITN 56

A Practical 40 Meter DX Antenna<\/h3> – 4 honest not to be sneezed at dB! …… W7JLU 60

A Commercial Bid for the 450 Market<\/h3> – Meet the Alpha 100W amplifier …… Staff 63

Modification to HW Transceivers<\/h3> – Adding headphones …… WB2WYO 65

CW Selectivity<\/h3> – For the sideband receiver …… ZL4OK 68

General Class Study Guide: Part IX – Putting the “Tell” in “Tele”<\/h3> …… Staff 80
\n
\n

73 Ham Radio Today Issue July 1971<\/a>
<\/h2>\n

An IC Audio Processor<\/h3> – Two IC Project …… W2EEY 16

Audio Signal Generator<\/h3> – Wein bridge reinvented …… W3SGV 20

Questions Questions Questions<\/h3> – Answers answers answers …… W9EGQ 24

A Filter Box for CW Ops<\/h3> – Mind boggling CW selectivity …… K8TSQ 26

Duals<\/h3> – Think piece for this month. Think! …… WB2PAP 34

Miniature Add-on Oscillator for 2M FM<\/h3> – Little P.C. unit …… WB6BIH 40

Collinear Gain Antenna for VHF\/uHF Repeaters<\/h3> – Verticle beam antennas? …… K6MVH 42

Invitation to Transmit<\/h3> – This is women’s lib? …… Thurmond 43

FM Directory<\/h3> – Everything you always wanted to know …… Staff 49

Desktop Base Stations from Motorola G Strips<\/h3> – Another FM article in 73? …… W9VZR 56

Camouflage Extra Class<\/h3> – How to sneak a 40m beam past the XYL …… W4CWB 63

File-box Transistor Beta Tester<\/h3> – Are your transistors really adequate? …… WB4ITN 66

2 KW From Heath<\/h3> – Heath does it again! SB-220 …… W6BMK 77

General Class Study Guide<\/h3> – Part X – The listening post …… Staff 80
\n
\n

73 Ham Radio Today Issue August 1971<\/a>
<\/h2>\n

DXpedition to the Laccadives<\/h3> – Another rare one de-rared …… VU5KV 16

Facsimile for the Radio Amateur: Part I<\/h3> – Scan these facts …… Dean 22

You Can Take it With You<\/h3> – Camper portable …… K5PAC 28

Diary of a DXpedition<\/h3> – KD2UMP dumps on DXers …… KD2UMP 32

“TINY TIM” Linear Amplifier<\/h3> – All bands 600 watts …… WA6VLI 38

Four-tube Station<\/h3> – For 40 and 80 meter CW …… W5LET 48

All’s Well in Amateur Radio?<\/h3> – Not on your ARRL tintype …… W8GI 54

A Digital Readout for Your VFO<\/h3> – You might call this Signal Two …… WA2IKL 56

15 Meter Signals from Jupiter<\/h3> – You don’t need the Arecibo dish …… K6MIO 66

General Class Study Course: Part XI<\/h3> – Antennas and feedlines …… Staff 75

The Pink Ticket Rejector<\/h3> – Wales amateur invents the wavemeter …… GW8PG 90

DX From the Stars<\/h3> – But does it count for DXCC? …… WN4ONW 93
\n
\n

73 Ham Radio Today Issue September 1971<\/a>
<\/h2>\n

Transformerless Power Supplies<\/h3> – Theory and six practical circuits …… K3SVC 14

Build a Solid-state Module TV Camera<\/h3> – And amaze your friends …… W0KYQ 18

An Experimenter’s Guide to IC Substitution<\/h3> – Getting HEP to IC’s …… K5JKX 28

Microwaves and Microsounds<\/h3> – How to see underwater ….. K1CLL 38

RF Power Measurement with Hot Carrier Diodes<\/h3> – Rf wattmeters for up to 450 MHz …… W6AJF 42

IC\/photocell Compressor\/aGC Unit<\/h3> – With no noise buildup problems …… W2EEY 47

The Theft Stopper<\/h3> – Booby trap for the car …… K4EPI 52

A Marketing Man’s Approach to Ham Radio<\/h3> – Ham radio is a product …… WB8CDU 53

Multi-channel Operation with the Motorola HT-200<\/h3> – HT-200 modification …… K8YQH 59

Facsimile for the Radio Amateur: Part II<\/h3> – Scan this thriller continued from last month …… Dean 66

Man-made Interference<\/h3> – Its causes and cures …… WB5DEP 78

A Linear Stable VFO<\/h3> – Better a VFO than a UFO …… W8RHR 86

General Class Study Guide XII<\/h3> – Some general questions on TVI etc …… Staff 89

Effective Heat Sinking<\/h3> – Preventing fried germaniums and silicons …… K5ZBA 101

The Spider<\/h3> – Interfacing your transceiver and linear …… W4RIZ 104

“Say Coo Say Coo Day Eckees”<\/h3> – Some hams don’t speak English …… W7OXD 107

An IC Pulser for the Amateur Experimenter<\/h3> – For the many unpulsed IC’s around …… W6GXN 112

A DC Isolator for Phone Lines<\/h3> – Keep out of trouble …… Weinstein 117

New Hope for Learning the Code<\/h3> – Learn the code in two hours …… WA1KWJ 119

73 Tests the Gonset Super Scan Receiver<\/h3> – Minding 8 FM channels at once almost …… W2NSD 122

New Mark Products $30 Battery-boost Regulator<\/h3> – Works from 11 volts up …… Brown 124
\n
\n

73 Ham Radio Today Issue October 1971<\/a>
<\/h2>\n

Wide-range RF Milliwattmeters Using HCD’s<\/h3> – Using Hot Carrier Diodes! …… W6AJF 15

Signaling Through Space Without Wires<\/h3> – How it all got started …… K1CLL 23

An Instant FM Repeater for Emergency Use<\/h3> – Two FM rigs one repeater …… K2OAW 29

It’s the Real Thing<\/h3> – Power supply not using transformers …… VE3GSP 31

Meteor Showers: On Prediction Accuracy<\/h3> – WAS on two meters? Why not? …… W5KHT 37

Simple Digital Remote Control Circuits<\/h3> – Doing lots with few wires …… W1EZT 41

How to Be An Amateur<\/h3> – A good amateur is ignorant egocentric etc …… W2ZGU 49

A Simple Reverse Current Battery Charger<\/h3> – For recharging flashlight batteries …… W6FPO 55

It’s In the Bag<\/h3> – Almost …… WB6JLC 59

Passive Repeaters<\/h3> – And you can rent out the front for a billboard …… W7EEX 61

Converting the AC\/dC for WWV<\/h3> – Keep WWV at hand to check your calibrator …… W3JJU 75

Fail Safe Switching<\/h3> – Infallible sequential switching …… W7CJB 77

Back to Mother Earth the Easy Way<\/h3> – Installing a 10′ ground pipe – easily! …… WA1FHB 79

3 dB for 3 Bucks<\/h3> – Audio tailoring for SSB …… W2EEY 81

The Ham’s Publicity Primer<\/h3> – Spreading the word …… WB2FBF 85

Some Notes on the Swan 350<\/h3> – Six improvements for a great rig …… K1KXA 101
\n
\n

73 Ham Radio Today Issue November 1971<\/a>
<\/h2>\n

A Big Three Element Beam<\/h3> – Three elements on 75m – ZOWIE! …… W4AXE 13

Remote Tune Your Groundplane<\/h3> – This is a real screwed up antenna …… W2AOO 17

How to Build an Economast for Under $50<\/h3> – Towerless is powerless in working DX …… WB2FBF 21

A Gain Vertical Antenna for 2 Meter FM<\/h3> – 10 dB = 10 X power transmit and receive! …… K9STH 25

Photographing Radio Equipment<\/h3> – Maybe we can have better pictures in 73? …… W2EEY 29

Biasing the Transistor Audio Amplifier<\/h3> – Who among us is without bias? …… W5JJ 37

The Split Site Repeater<\/h3> – Greatly improves repeater coverage …… K6MVH 39

The Art of T-hunting<\/h3> – Have you been missing this fun? …… WB6IQS 45

An Ultra-simple Selective Audio Filter<\/h3> – Ideal for the CW op moonbounce etc …… W8RHR 49

Transistor\/diode File Box Tester<\/h3> – Better lay in a supply of file boxes …… WB4ITN 51

Crystal Tester<\/h3> – Two transistor go\/no go tester …… K6VCI 55

A Compact Kilowatt for Six Meters<\/h3> – Think of the TVI records you can set with this! …… K1ZJH 57

The 3-4-6 Quad<\/h3> – “The first stateside signal of the day …… K2MNJ 63

Let’s Revise the Morse Code<\/h3> – Isn’t it really about time? …… W7OXD 79

A Pie-Net for Transistor Finals<\/h3> – Specifications for all bands 160 – 6m …… W5PAG 85

Changing the 75S3 into a Better CW Performer<\/h3> – Using a $58 Collins mechanical filter …… OA4KF 93

Why Coax?<\/h3> – Twin lead is cheaper and has less loss …… G3BID 95

Communications Yardsticks<\/h3> – dB dBm dBmc and other erotica …… Lenkurt 101

Metalphoto Your Nameplate<\/h3> – This will really fake out the vjsitors …… W6BLZ 107

Amateur Radio and the Disabled<\/h3> – Great hobby for the shut-in …… WA2CGA 109

Solid State Microwaves for Amateurs<\/h3> – Crystal control on 2300 MHz …… K1CLL 113

Those Funny Looking Cards<\/h3> – A Washington lobby? Who needs it! …… WA1GFJ 123
\n
\n

73 Ham Radio Today Issue December 1971<\/a>
<\/h2>\n

Convert Your 7 MHz Cubical Quad to All Bands<\/h3> – Everybody’s doing it …… K6DDO 13

The Indoor Quad<\/h3> – How to cram a quad into an apartment …… K9RJO 17

Getting to Know Tee Squared EII<\/h3> – This is a very logical article …… Thorpe 19

More Power From 6146’s<\/h3> – Getting more power without disaster …… W2YW 27

Radio Direction\/range Finder<\/h3> – Think Piece …… K6BIJ 29

Curtis CW Identifier<\/h3> – For repeaters and remote base stations …… K6MVH 31

Morse Memory<\/h3> – 30 letter memory for ident contests etc …… WA6ATT 37

73 Tests the GLladding 25 FM Transceiver<\/h3> – 25 watt $250 FM transceiver …… Staff 49

73 Tests the GAM TG-5-s Gain Vertical<\/h3> – Why we use it for our repeater …… Staff 77

SCR Mobile Theft Alarm<\/h3> – Burglars please do not read this article …… W1BHD 80

DX QSO’s or Contacts<\/h3> – The human side of DXing …… G3BID 81

Code Shorthand<\/h3> – Toward speedier copying …… K2EE 83

VHF Double Sideband<\/h3> – Sideband? On two meters? …… W4KAE 85

73 Tests the 270 Automatic Alarm<\/h3> – And likes it … and likes it! …… W2NSD\/1 92
\n
\n

73 Ham Radio Today Issue January 1972<\/a>
<\/h2>\n

RTTY Art<\/h3> – A new art form is born …… WA6PIR 13

The TT-63A As A Display Generator<\/h3> – Surplus conversion for RTTY …… K2BEH 17

Television Monitor<\/h3> – All solid-state except for the tubes …… K0MOC 21

73 Tests The Icom IC-21 Transceiver<\/h3> – Twenty-four channels -holy moly! …… K1NUN 27

73 Tests the Regency Transcan FM Transceiver<\/h3> – Listening to 8 repeater channels at once …… W2NSD 29

73 Reviews The Allied AX-190 Ham Receiver<\/h3> – New solid state receiver for $250 …… Staff 30

Phone Phreaks vs Ma Bell<\/h3> – How people get caught cheating TPC …… WB8LBV 31

AFSK Revisited<\/h3> – or how I learned to stop worrying and love teletype …… WA3AJR 35

Tuning Indicators for SSTV Monitors<\/h3> – The sooner you try SSTV the better for you …… K7YZZ 39

Designing Diode Matrix Units<\/h3> – For automatic ID …… WA0ZHT 45

Circuits Circuits. Circuits<\/h3> – Circuits …… Staff 53

The Making Of A Modern Day Receiver<\/h3> – Why some are better than others …… W2FEZ 57

Simultaneous Multi-band Transmissions<\/h3> – In case you want to imitate W1AW …… W2EEY 61

A Pre-Novice Transmitter<\/h3> – A fun way to learn code …… WA8OIK 67

The Problem of Inversions<\/h3> – The logic of USB vs LSB on SSB …… K3WNX 69

A Medium Frequency Converter For High Frequency Receivers<\/h3> – Tuning 400 – 1000 kHz on you r 80m receiver …… VK3IQ 73

Easy End -feed Z Match<\/h3> – End-feed antenna 80 – 10m …… G3OGR 75

Coat-hanger Antenna For 2 Meters Revisited<\/h3> – The improved coat-hanger …… Gelsinger 77

73 Uses The Simpson Model A<\/h3>– Well designed well built …… Staff 79

73 Reviews the CT Power Amplifiers<\/h3> – Tiny mobile rock crusher …… Staff 85

Optimal Vertical Antenna Loading Techniques<\/h3> – A vertical can be satisfying …… W2EEY 87
\n
\n

73 Ham Radio Today Issue February 1972<\/a>
<\/h2>\n

Tuning Mr. Morse’s Key<\/h3> – Six whole pages on adjusting a key? Ridiculous! …… W6AJZ 15

CW as seen by<\/h3> – Social Commentary …… W6EIF 20

A Solid State High Frequency Regenerative Receiver<\/h3> -el cheapo receiver using one IC …… W6JTT 23

Headsets And Ham Radio<\/h3> – Why you should throw away a lot of money on good headphones …… W6DDB 25

The Perfect CW Signal<\/h3> – Eliminate keying transients …… W6YBP 31

Tips For Raising Your Code Speed To 20 WPM<\/h3> – Extra here we come! …… W7OXD 35

Why Not Try QRP?<\/h3> – Win the 1000 mile per watt award …… WA8MCQ 41

VHF Dummy Load Wattmeter<\/h3> – But will it ever replace the antenna? …… K9STH 46

An Experimental Sweep Oscillator<\/h3> – Replace your vfo with this gem! …… W9ZTK 49

Who Can’t Learn The Code?<\/h3> – Anyone; anyone at all can learn code …… W0HFK 53

The Greater Dipper<\/h3> – 13 – 200 MHz simple dipper …… WA0AYP 55

CW DX On 1\/2 Watt<\/h3> – Enjoy QRP with this 1 watt rig …… KL7FSX 57

20-60W 1-4 Band TX<\/h3> – Two-tube CW transmitter. Tubes? …… G3OGR 59

A Look At Oscillator Kits<\/h3> – You can still buy a lot for $2.95 …… K1CLL 63

The Saga of Mikes And Earphones<\/h3> – Fascinating fundamentals …… W2FEZ 70

Quick And Easy PNP\/nPN Transistor Sorter<\/h3> – Why sorter gadet is this? …… W2EEY 73

Self-contained Reflected Power And CW Monitor<\/h3> – Two gadgets in one unit …… W2AOO 75

Using & Improving The Ten-tee Transceiver Modules<\/h3> – Ten-tec oh Ten-tec where are your ads? …… W2EEY 77

Ham Hospitality a la Latin<\/h3> – The brotherhood of amateur radio …… WB4SNC 85

General Class Questions and Answers: Part I<\/h3> – More up to the minute questions for the FCC study course …… K5JKX 89

Circuits Circuits Circuits – Circuits<\/h3> …… Staff 97

Modified Heathkit HW-16 CW Transceiver<\/h3> – Making a good rig even better …… WA3PRV 101

The Automatic Transmission Line Tuner<\/h3> – Takes four transistors …… K3QKO 107

Keyboard Morse Generator<\/h3> – Be the first on your block with one …… W5VFZ 113
\n
\n

73 Ham Radio Today Issue March 1972<\/a>
<\/h2>\n

Converting The T-278\/u Transmitter To 2m<\/h3> – What would a surplus issue be without a surplus article? …… W6JTT 15

Converting The ART-13<\/h3> – The supposedly dead resurrected ……W2ISL 19

Improving Your HR-2<\/h3> – Better selectivity. FM article …… WA1KJI 23

Twelve Channels With The Regency HR-2<\/h3> – Tsk another FM article! …… WA1KJI 24

Morse Centennial<\/h3> – Morse died in 1872. His code hasn’t yet …… Miligram 25

Updating An Old Receiver<\/h3> – Like for instance a 75A2 …… W8RHR 27

Learning From Emergencies<\/h3> – Los Angeles SCM report reprinted …… W2NSD 31

Solid State Tunable I-f: Part II<\/h3> – 1650 kHz better than 455. Much better …… K1CLL 33

Checking Zener Diodes<\/h3> – Using a voltmeter …… WA0ABI 37

General Class Questions & Answers<\/h3> – Practice questions. You read the book …… K5JKX 39

Technical Aid Group<\/h3> – An old 73 feature reborn …… Staff 48

Putting The ARC-3 On Two<\/h3> – Superbargain 2m rig …… WA4NAI 49

Blown Fuse Indicators<\/h3> – For ac or dc fuses …… W0EDO 59

Nonlinear Resistors<\/h3> – Such as light bulbs thermistors etc …… W6GXN 65

Constant Current Charger For Ni-cads<\/h3> – They’re expensive so be nice to them …… K6MVH 69

The ESM\/l Transceiver<\/h3> – Solid state pocket CW surplus rig …… WB6BIH 73

Low Cost Transistor RF<\/h3> – With typical transmitter circuits …… WA8ZEL 75

Updating the W1PLJ Counter<\/h3> – From Feb. 68 issue of 73 …… W6GXN 101

Circuits. Circuits. Circuits<\/h3> – Circuits …… Staff 109

Simple Diode Controller<\/h3> – “Dimmer” for soldering iron …… W2OLV 113

Low Pass Filter In Action<\/h3> – Take that TVI! …… VE3GSP 115

Overseas Patching<\/h3> – Mars does our public service for us …… K6GKX 121

Confessions Of A Surplus Hound<\/h3> – Neil is an old friend of Wayne’s …… W2OLU 125
\n
\n

73 Ham Radio Today Issue April 1972<\/a>
<\/h2>\n

200 Watt 2m Amplifier<\/h3> – Now you can be unpopular in six counties …… W4RIZ 17

Using the Drake TR-22<\/h3> – Does more than DU2 …… W4FQM\/l 25

An Auto-bandwidth Selector Unit<\/h3> – Using two ICs …… W2EEY 27

“Break”<\/h3> – A typical day on 2m FM …… K1NUN\/1 31

AFSK-mCW-cPO IC<\/h3> – Prizes if you can translate that …… K9MRL 36

Using the LM373<\/h3> – I-f amplifier IC projects …… K4DHC 37

Repeater Site Alarm<\/h3> – Hear your gear being stolen or vandalized …… K6MVH 45

T44 Base Station Conversion<\/h3> – Getting on 450 MHz for $30-$50 …… K0MOC 49

The HR-2 as a Base Station<\/h3> – Power supply deviation meter etc …… WB6BHI 51

FM Repeater Guide<\/h3> – World’s most complete list of repeaters …… Staff 55

Electronic Symbols & Abbreviations<\/h3> – Just what you’ve always wanted to know …… Staff 86

73 Tests the Comcraft<\/h3> – Tunable receiver shakes FMers to core …… W2NSD\/l 93

The Florida Repeater Mess<\/h3> – Bad but California leads again …… WA4RLG 95

Ross & White Transceiver<\/h3> – With tone burst built in yet …… W4FQM\/l 99

Ionospheric Effects of Thunderstorms<\/h3> – Perturbations occur …… WN5COZ 101

FM as seen by<\/h3> – If the shoe fits …… W6EIF\/4 104

Circuits Circuits Circuits<\/h3> – Build build build…… Staff 107

Extra Class Questions and Answers<\/h3> – Are you ready for the $9 questions? …… Staff 109

Poor Man’s FM Base Station<\/h3> – Is FM for under $75 low enough? …… WA4UZM 117
\n
\n

73 Ham Radio Today Issue May 1972<\/a>
<\/h2>\n

SSTV Monitor<\/h3> – Built from a kit …… WA4VAF 17

6 Meter Mobile Transmitter<\/h3> – 40 watts of FM …… Martens 21

Quick Band Change Mobile Antenna<\/h3> – With output indicator …… W4LLR 27

Audio IC<\/h3> – For modulators receivers etc …… K1CLL 32

73 Tests the Larsen Antenna<\/h3> – Very effective 5\/8 wave mobile FM antenna …… W2NSD\/l 36

How to Get the Stuff into the House<\/h3> – Sneakily …… W2OOJ 37

Anti-cW RTTY Autostart<\/h3> – 73 is Not anti-cW …… W4FQM\/1 39

Extra Class Q&A<\/h3> – Hedge that $9 gamble …… Staff 45

A Modern VHF Frequency Counter<\/h3> – Can be built for under $100 …… K2OAW 53

OSCAR Mariner on Mars<\/h3> – This should have run last month …… W7DXX 62

TV Sync Generator<\/h3> – Using ICs …… K9AAC\/7 65

Radio Astronomy<\/h3> – Redeeming value science feature …… W4ZBE 74

The Past is Prologue<\/h3> – FCC’s Prose Walker addresses QCWA …… W3UCT 85

Noise and Receiving Antennas<\/h3> – Noise alas is the limiting factor …… W2EEY 93

The Sewerpipe Antenna<\/h3> – 2m FM of course …… W7PUG 100

73 Tests Pickering Keyboard<\/h3> – You still have to learn how to type …… K1NUN 103

Circuits Circuits Circuits<\/h3> – And more circuits …… Staff 109

Signal Reporting<\/h3> – Clever RST system devised …… W0HKF 113

Real Cheapie Freq. Meter<\/h3> …… K6EAW 115

Simple Car Ammeter<\/h3> – All solid state …… W6WDF 118
\n
\n

73 Ham Radio Today Issue June 1972<\/a>
<\/h2>\n

Six Elements on Twenty Meters<\/h3> – Eliminate QRM …… VE3GEJ 17

Slow Scan Television<\/h3> – Basics …… G5ZT 21

Beaming the Vertical Antenna<\/h3> – On the low bands …… W6AJE 27

Active Filter Design and Use<\/h3> – All kinds of filters Part I …… K3PUR 36

Antenna Party<\/h3> – Simplified erection …… W0BMW 45

Radio Astronomy for Amateurs (Part II )<\/h3> – Projects for amateurs to tackle …… W4ZBE 51

Patenting Your Invention<\/h3> – Why not … why? …… Hunter 61

20 dB Beams<\/h3> – Design and construction of VHF antennas …… K1CLL 67

Converting the Progress Line<\/h3> – FM featurette …… WB9CXE 75

Phasing Multiband Verticals<\/h3> – Ten thru eighty meters …… K0WF 85

Ham TV and Public Service<\/h3> – PR the name of the game …… W9JER 89

Modified Suction Cup Antenna<\/h3> – Not too modified …… WZEE4 93

300 MHz Frequency Scaler<\/h3> – Extends frequency counters to VHF …… K2OAW 97

73 Reviews the Savoy Antenna<\/h3> – Two and three band with vacuum traps …… W4FQM\/1 101

Care and Feeding of Tape<\/h3> – RTTY featurette …… WA6PIR 109

Circuits Circuits Circuits<\/h3> – And more circuits …… Staff 111

RTTY Filters<\/h3> – Elliptic function filters …… W5EZM 115

Step On the Klutz!<\/h3> – Bob Manning rides again …… K1YSD 123

Trouble Shooting For the Novice<\/h3> – You don’t have to send it back …… WA8OIK 129

Low Cost C D Ignition<\/h3> – It has advantages …… W1KNI 133

Lightning!<\/h3> – Its cause and cure …… W2FEZ 139

73 Tests the Regency Amplifier<\/h3> – 2m amplifier for FM is a beaut! …… W4FQM\/1 145
\n
\n

73 Ham Radio Today Issue July 1972<\/a>
<\/h2>\n

Modern VHF Counter<\/h3> – Part 2 of 3. This will be followed by a frequency synthesizer as part of the system …… K2OAW 5

Solid State VHF Amplifier<\/h3> – FM again? Well actually any VHFer should enjoy building th is experimental amplifier. Looks ideal to beef up the new International Signal rigs …… W9ZTK 15

The Phased-lock Loop<\/h3> – Hey read this and snow everyone on 3999 with your tremendous technical knowledge. The P-l-l is here to stay so you might as well come to terms with it. The terms are easy …… K4ZFD 19

VHF Converters<\/h3> – Dual gate Mosfets the best thing since DUZ? …… W8RHR 23

Add $15 T-power<\/h3> – Vibrators are out right? So here’s a replacement to help you get that old kluge FM rig on the air …… WB2BJN 31

1296 MHz Mixer<\/h3> – Don’t sneer odds are you’ll be looking back on this article in a year or so when you start thinking 1296 seriously …… WB2YVY 33

Thick Film R-f Pre-amplifier<\/h3> – For any band really – but great for FMers …… K9STH 45

The Heath IB-102 Prescaler<\/h3> – The 73 Tech Ed checks it out. Likes …… W4FQM 63

The VHF Specialists FM Amplifier<\/h3> – Ten in fifty out for 2m FMers …… K1NUN 69

71 Meteor Shower DXing<\/h3> – Real easy way to work 50 states on 2 meters. Haw! …… W5KHT

Tone Decoder and Carrier Relay Circuits<\/h3> – Using the 741 op amp. Face it fellows the 6SN7GT is no longer state-of-the-art and you might just as well start reading these op amp and phased lock loop articles without gnashing your teeth …… K2OAW 83

Flying Spot Scanner for SSTV<\/h3> – Solid state unit simple relatively. Are you going slow scan right now or going to wait and miss a lotof fun you could have had ? …… WB8DQT 89

Active Filter Design Part II<\/h3> – Another chapter in the exciting “Filters Can Be Fun” series. Don’t miss the madcap ending next month …… K3PUR 97
\n
\n

73 Ham Radio Today Issue August 1972<\/a>
<\/h2>\n

Navassa<\/h3> – The intimate inside story of KC4DX! …… W2NSD\/l 4

Slow Scan Television<\/h3> – Introduction and general principles …… W9NTP 16

Premodulation Speech Processor<\/h3> – Get a 1 to 2 S-unit increase in signal …… W6AJZ 28

Two Buck Signal Generator<\/h3> – For 2m FM and stuff like that …… WB4MYL 33

Transmitters Then and Now<\/h3> – History …… W2FEZ 35

Practical Amateur FM Repeaters<\/h3> – Next month impractical FM repeaters maybe? …… K9STH 41

El Cheapo Test Probes<\/h3> – Cheapskate use for old marking pens …… WB4MYL 58

Prog Line Power Supply<\/h3> – Actually this will power any surplus FM rig getting you on FM for beans …… K6VBT 60

Random Access Switching<\/h3> – Some push-button control circuit ideas …… W9SEK 62

Diode Receiver for 432 MHz<\/h3> – Also receives radio signals – like FM …… K1CLL 65

The Taming of the HHRW<\/h3> – Why have the wife hate amateur radio when she can be induced to grudgingly coexist with it? …… K7TCU 73

$5 Preamp Compressor<\/h3> – It really does make a difference …… VE3GSP 15

Push-to Talk For The Sixer<\/h3> – Plus other modifications for this and the Two’er …… WB2YWO 77

Audio Distribution Panel<\/h3> – And phone patch plus other goodies …… K3PUR 81

Voltage Multipler Supply for Scopes<\/h3> – A 300 volt transformer can generate 1500 volts thisaway …… K2BEH 87

VFO Operation for the Two’er<\/h3> – Using the Heath HG-l0 Should work with the Sixer too …… WB6FVW 89

\/mM Maneuvers<\/h3> – Wherein our hero fixes a marine rig answers a QRR and gets into deep trouble …… VK4SS 91

The Sun and Radio<\/h3> – Science feature! …… W4ZBE 91

Poor Man’s Transcanner<\/h3> – Mating a scanning receiver to an FM transceiver the Regency HR2 and TMR-8 in this case. Result : aninexpensive transcanner …… WB9FOP 105

SCR Regulator for KW Power Supplies<\/h3> – More flexible than one of those old great big expensive Variacs and voltage regulators to boot! Your HV supply will be obsolete without this …… W3HXO 101

The Ideal Crystal Oscillator<\/h3> – For that 1296 MHz rig you are going to build …… K1CLL 115

The HW-16 on Phone?<\/h3> – Simple modification …… WN2REW 117

FM Adapter<\/h3> – FM gadget for low band receiver so it will work with those VHF converters and let you listen to all the repeaters …… W1LE 119

Electric Timer<\/h3> – Turns things (like rigs) on off or whatever you want…… W6LM 127

Circuits-circuits-circuits<\/h3> – Enough data for experienced builders to make do and references for beginners to get more info …… WA1KGO 129

GDO Coil Extension<\/h3> – For short GDO’s …… WA0ABI 139

50 MHz DXing<\/h3> – The band is open a lot more than you suspect. Here’s how to get more DX out of it …… WA6CPP 141

Home and Auto Burglar Alarms<\/h3> – Are you waiting to get ripped off before you put in an alarm? …… K6ZFV 158
\n
\n

73 Ham Radio Today Issue September 1972<\/a>
<\/h2>\n

Plumbicon SSTV Camera<\/h3> – Cheapskate approach to slow scan …… K7YZZ 10

WWVB Receiver<\/h3> – 60 kHz comparator receiver …… W7LHL 16

Audio Signal Generator<\/h3> – A tube circuit? Yes cigar tube …… WA6QVQ 27

The CW Excavator<\/h3> – Remarkable audio filter …… W2GOM 30

Exploring the Microwaves<\/h3> – Antenna and test receivers for 1296 2300 and 3500 kHz …… K1CLL 38

Balun Up or Balun Down<\/h3> – Advantages disadvantages and how to use …… G3BID 49

Another Solid State Power Supply<\/h3> – Think piece with practical project resulting …… K7HKL 52

IC Six Meter Receiver<\/h3> – Using only three IC’s …… K1CLL 57

FM-aM Demodulator<\/h3> – Phase-lock loop application …… VK4ZFD 64

Active Filter Design Part III<\/h3> – Mentholated or plain …… K3PUR 76

VHF Frequency Counter<\/h3> – Part III at long last …… K2OAW 89

FM Frequency Synthesizer Part I<\/h3> – Under $100 and works with almost any rig …… K2OAW 99
\n
\n

73 Ham Radio Today Issue October 1972<\/a>
<\/h2>\n

Frequency Synthesizer for 2 Meter FM Part II<\/h3> – For any 2m rig …… K2OAW 15

A Big New Voice in Chicago<\/h3> – September cover feature at last …… W9NLT 25

Solid State 6 Meter Crystal – HET – VFO<\/h3> – Solid State – the Works …… K1CLL 29

The FET Voltmeter As A Nano-amperemeter<\/h3> – For checking FET’s …… ZL2AMJ 37

Time\/frequency Measuring System Part I<\/h3> – Station clock and frequency counter …… K5OUS 39

Active Filter Design and Use : Part IV<\/h3> – Movie rights for this thriller available …… K3PUR 43

Transmission-limit Timer for Repeaters<\/h3> – For shortwinded FMers …… K6MVH 49

Extra Class License Study Guide<\/h3> – Questions & Answers Part III …… Staff 53

A Simple and Inexpensive Auto ID<\/h3> – Just what you need for the mobile rig …… WB6BIH 64

Adjustable Time Delay Relay Circuit<\/h3> – For power supplies and such …… W0MQB 71

Petition to the FCC<\/h3> – Some interesting ideas and comments …… W9JT 79

Power Lead Filters for 432<\/h3> – Makes things work alot better …… KlCLL 83

Portable 110<\/h3> – 90 and 200 watt supplies …… K3QKO 89

Hot Carrier Diode Converter<\/h3> – For 15m …… W5LET 96

RTL – Decade and Driver<\/h3> – With numeric readout even …… W9SEK 99

A Power Supply<\/h3> – For linear ICs …… W6GXN 103
\n
\n

73 Ham Radio Today Issue November 1972<\/a>
<\/h2>\n

The Traveling Ham<\/h3> …… G3ZCZ\/w3 5

Solid State Power<\/h3> …… W6EI 15

TTL SELCAL for RTTY<\/h3> …… W9ZTK 20

An IC TRF Receiver<\/h3> …… W6DNS 29

The Mark II Electronic Keyer<\/h3> …… W6JJI

Emergency Power for home QTH<\/h3> …… WA8OIK 37

High Power Mobile<\/h3> …… W9NTP 42

220 MHZ Front End Using FETS<\/h3> …… K1CLL 45

Double Delta Antenna<\/h3> …… W2EEY 52

FMP Review<\/h3> …… Staff 57

A Simple Converter for Beginners<\/h3> …… WA8OIK 59

The Third Hand… Tester<\/h3> …… WB4MYL 65

Lumped Line Oscillator VFO<\/h3> …… W5HDM 69

A Mobile Base Station<\/h3> …… VE3ADI 75

Ten-roger<\/h3> …… K4YKB 78

Synthesizer for 2M FM Part III<\/h3> …… K2OAW 81

Counter Corrections<\/h3> …… K2OAW 92

Gravity Abecedarium<\/h3> …… W0HLZ 92

Low Noise Economy Preamp for 2M<\/h3> …… K6MVH 120

2m Crystal Correlation Chart<\/h3> …… W2NSD 126

Extra Class Q&Q – Part IV<\/h3> …… Staff 127

Indestructible Voltmeter<\/h3> …… W9DTW 134

Who Was Tesla?<\/h3> …… Quinby 141

A Simple VHF SWR Meter<\/h3> …… W2EEY 154

Transistor Regenerative Receivers<\/h3> …… VK3IQ 157

Antenna Measuring Contest<\/h3> …… WB2HJD 159

SSB on 432 MHz<\/h3> …… WA8VHG 163

A 185 Amp Arc Welder<\/h3> …… W9IMS 170

Solid State Breadboard<\/h3> …… VE2DQ 178

Want Your Own Computer?<\/h3> …… WA7SCB 183

The Minimod<\/h3> …… G3ZCZ 202

Update Your Heath HR-10<\/h3> …… VE4RE 205

10 Meters Solid State<\/h3> …… W6OSA 207

A Husky 40m Ground Plane<\/h3> …… VE1TG 212

One Converter into Two Receivers<\/h3> …… W1OOP 216

ICC Logic<\/h3> …… W3KBM 217

Protect Those Diodes<\/h3> …… WA4CMQ 222

Solid State Overload Protection<\/h3> …… WA0ABI 223

IF\/rF Sweep Generator<\/h3> …… K4DHC 226

Amateur Radio in Yugoslavia<\/h3> …… YU3BH 249

Radio Amateurs in Poland<\/h3> …… SP5HS 251

Amateur Radio in the G.D.R.<\/h3> …… DM2HGO 253

APC<\/h3> …… WA0ABI 257

A Professional Digital Counter<\/h3> …… WA5LFN 259

Repeat It – The Long Way<\/h3> ……W9CGI 271

Interested in Antennas?<\/h3> …… K1CLL 275

All About Lasers<\/h3> …… W2FEZ 283

Put ‘Em All in One Box<\/h3> …… G3KPO 285

Circuits Circuits Circuits<\/h3> …… Staff 296

An Aural Transmitter Tuning Aid<\/h3> …… W1KPN 305
\n
\n

73 Ham Radio Today Issue December 1972<\/a>
<\/h2>\n

AFSA IV SSTV Analyzer<\/h3> – Also works for RTTY …… W0LMD 17

Single Conversion 2m FM<\/h3> – No 455 i-f needed – honest! …… K1CLL 23

Miniature Tone Encoder<\/h3> – Fits inside the mike …… WA9VGS 29

Tone Burst Decoder<\/h3> – For repeaters and such …… W3JJU 33

Universal I-f Amplifier<\/h3> – Like for a 2m panoramic receiver …… DJ1SK 38

Touch-tone Connections<\/h3> – For repeaters …… K3DSM 43

Simplest Audio IC Yet<\/h3> – Six parts and a battery! …… W6YBP 49

Using Varactors<\/h3> – Everything you were afraid to ask …… W2EEY 51

v18 Watts on 2m<\/h3> – Amplifier for FM …… WB4DBB 63

Sideband Sniffer<\/h3> – Monitor …… G3OGR 65

Crystal Checker<\/h3> – Wretched rock detector …… W4AYV 68

10 Amp Power Supply<\/h3> – Variable yet! …… WB6TOX 73

Using Transmission Line Sections<\/h3> – Pretty useful actually …… VE4RE 79

Radio Astronomy – Do it yourself<\/h3> …… WA3CXG 83

Henryometer – In case you’re choked up<\/h3> …… WA8MLP 88

20m Transverter<\/h3> – For 75m transceivers …… W9IDP 89

LED Primer<\/h3> – Expensive Christmas tree lights …… WB6JNI 96

40m FET Preamp<\/h3> – Hop up a crumby receiver …… W6BLZ 101

Waterproofing<\/h3> – Liquid plastic system …… W2AOO 104

Super CW Filter<\/h3> – One IC …… W6AGX 107

Novice VFO for 40 Meters<\/h3> – The Clapp isn’t all that bad …… W9ZTK 112

New Novice Regulations<\/h3> – Everybody gets VFO’s …… FCC 129

2m Preamplifier<\/h3> – FET vs MOSFET? …… W0IPB 134

3rd Party Regulations<\/h3> – Two and a half pages of No-No’s …… FCC 138
\n
\n

73 Ham Radio Today Issue January 1973<\/a>
<\/h2>\n

Obscene Commission Petition<\/h3> – That hints of sedition and of coition …… W2NSD 29

Minds Will Boggle When You Add<\/h3> – This Handy-talky Touchtone Pad ……WlODI 31

A Widespaced Beam<\/h3> – Is the DXer’s dream …… VE3CFK 33

To Visit Yaesu You Should Plan<\/h3> – When next you travel to Japan …… WB6IZF\/YB8AAP 37

Chances Are That You’re Boun’ter<\/h3> – Love this IC KC counter …… KL7GGB\/4 39

Speech Processing Gives More Power<\/h3> – To transmit nonsense by the hour …… W0YBF 47

Try This Tricky Two Tone Test Set<\/h3> – It’s not the worst it’s not the best set …… W6GXN 53

The Sunspot Cycle From 1750<\/h3> – Tells us when DX is going to be nifty …… VE3CEA 60

An FM Tester and Frequency Meter<\/h3> – Will put you right into your local repeater …… VE7ABK 65

New DX Award Announced<\/h3> – For ops who try but then get trounced …… K9AZG 71

A Tilt-over Tower Simple and Neat<\/h3> – For chickens who panic above 20′ …… W2ANT 73

The New J-license Apparently Can<\/h3> – Give ham supremacy to Japan …… WB5EBC 77

A Simple Kit for $18<\/h3> – Makes a converter for 6m scholars …… K1CLL 79

The Ham Content’s<\/h3> – The wife’s laments …… Lamonica 83

Kick Heterodynes in the Crotch<\/h3> – With a tunable filter notch …… G8ABR 85

One KW P.E.P.<\/h3> – To help you make DXCC …… WA9JMY 89

High Power Silicon Theory and Practice<\/h3> – Proving that Beta can often be fractious …… WB4LVA 97

An I.C. Ten Meter Tuner<\/h3> – Build it not later but sooner …… K1CLL 99

A Sturdier Quad in Unusual Form<\/h3> – To defy the wind and even a storm …… WB2HYW 110

Two Small Changes You Can Make<\/h3> – To slightly improve your 4A Drake …… VE6TW 112

Behold a Dandy Noise Defier<\/h3> – Double diode rectifier …… EI4R 113

An Improved AGC Conception<\/h3> – For better CW and SB reception …… ZL2BDB 115

Let Your Transformer Toil<\/h3> – In a bucket of oil …… WA0ABI 121

Having More Fun<\/h3> – With the HAL ID-1 ……W3GHZ\/0 126

Build a Slow Scan Picture Taker<\/h3> – From a Polaroid 230 Copy Maker …… K4PRT 130

Build the Ferrous Wheel CW Key<\/h3> – And pump your way to satori …… K6QKL 133
\n
\n

73 Ham Radio Today Issue February 1973<\/a>
<\/h2>\n

PC-iC-iD<\/h3> – For FM- RTTY- \/m- etc …… K2OAW 27

The Evolution of Spectrum Management<\/h3> – Radio Club of America Talk …… W4BW 31

Phased Lock Loop Decoder<\/h3> – For continuous tone systems …… WB6BIH 36

Toroidal Quadreture Antenna<\/h3> – New wideband antenna …… W4KAE 40

Active Filter Applications<\/h3> – RTTY …… W1SNN 45

Frequency Measuring System -iI<\/h3> – Design theory and clock …… K5DUS 49

Repeater Keying Line Control<\/h3> – Squelch tail and time-out …… WB6BIH 60

SSTV Circuits<\/h3> – A raft of popular circuits …… W9NTP 63

Two Meter Converter<\/h3> – For a BC FM receiver …… WB6CDU 80

All Purpose Metering Circuit<\/h3> – Use one meter for the whole rig …… WA0ABI 83

Are FET’s Really Biased?<\/h3> – Understanding FET’s …… K9VMH 86

If Your Counter Input’s Low<\/h3> – Here’s an IC way to go …… K4EOE 89

TR-22 Modification<\/h3> – For higher output power …… W8FJA 91

Transistor RF Power Amplifiers<\/h3> – Theory – Part I …… W9EGQ 97

Light Bulb Power Indicators<\/h3> – El cheapo …… WB2GQY 102

Economy Filters for 75A4<\/h3> – Still an excellent receiver …… W0IQI 105

Capacity Measurement<\/h3> – By frequency shift …… W3HTF 108

Keyer Adaptor<\/h3> – For outdated transmitters …… W1JSS 116

Gonset Linear Modification<\/h3> – Gonset 201 ……W6HGX 118

A Time for Everything<\/h3> – A discussion of time …… WB6KFI 125

IC Protection<\/h3> – Second guess your power supply …… W4ATE 142
\n
\n

73 Ham Radio Today Issue March 1973<\/a>
<\/h2>\n

A Fast Scan Facsimile System<\/h3> – Use it with SSTV …… W6WMI 20

Six and Two Meter High Power<\/h3> – Using a $25 surplus amplifier …… K4EPI 31

Solid State Repeater Control<\/h3> – Timers ID etc …… K2OAW 35

A Digital Tape Distributor for RTTY<\/h3> – Are you still using motors? Tsk …… K4EEO 45

The Ample Amplifier<\/h3> – All band 1200 watts …… K9PYY 50

Popular SSTV Circuits -part II<\/h3> – 19 more slow scan circuits …… W9NTP 55

The Can Scanner<\/h3> – World’s cheapest SSTV camera? …… K4TWJ 69

Improving the Indoor Antenna System<\/h3> – Using copper foil …… W2EEY 73

Updating Sorenson “A” Nobatrons<\/h3> – Low voltage power control …… W6GXN 77

FM Deviation Meters<\/h3> – Gay lib special …… VE7ABK 81

Time Frequency Measuring System -part III<\/h3> – Counter …… K5DUS 85

Another Use for 400 Cycle Transformers<\/h3> – Another use is badly needed …… W0NVM 91

Bandpass Filter Design<\/h3> – An engineer’s delight …… WB6NWQ 101
\n
\n

73 Ham Radio Today Issue April 1973<\/a>
<\/h2>\n

Low Cost FM Deviation Meter<\/h3> – Lest you deviate from the path of righteousness …… W9HD 21

Taming Those Hot 500 MHz FETS for 2m FM<\/h3> – Shrews you what you can do …… K1CLL 27

Two More Two Meter Amplifiers<\/h3> – Louder is better -right? …… WB4DBB 31

“Mini” Repeater Control System – Part I<\/h3> – This is the mini -the maxi is a whole book …… WA0ZHT\/l 35

Getting Your Repeater Licensed –<\/h3> Difficult -but possible …… W2NSD\/1 51

Low Temperature Techniques for Radio Amateurs<\/h3> – Talk about solid state …… W1GNZ 55

Choosing Your FM Rig<\/h3> – Stop missing all the fun …… W2NSD\/l 59

Europe on 2 Meters a Day<\/h3> – Europe is rife with repeaters …… W2EEY 63

Scanning Adapter for FM Transceivers<\/h3> – Hear all -know all …… WA4WTX 73

The RCA CMU 15 FM Transceiver<\/h3> – Getting on 450 el cheepo …… WB6BIH 79

2 Meter FM at 14 000 Feet<\/h3> – How to be hated in six states simultaneously …… W7DXX\/1 83

Simple Lightning Detector<\/h3> – Undetected lightning is bad stuff …… K2OAW 85

Citizens Band Alignment Aid<\/h3> – Is this an April Special? …… WA5SWD 87

Heath Desk Top Calculator<\/h3> – How did we ever do without it? …… WA9FPP\/1 90

Transistor RF Power Amplifiers -part II<\/h3> – Only way to go …… W9EGQ 93

Repeater Economics<\/h3> – All that nice stuff costs money …… K4ADL 105

International Signal’s 100 Milliwatt Rig Revisited<\/h3> – Hey let’s have more articles on this gadget! …… WB6QAM 109
\n
\n

73 Ham Radio Today Issue May 1973<\/a>
<\/h2>\n

Mobile Burglar Alarm System<\/h3> – Belt beeping burglar baffler …… WA4SAM 19

The Burst Box<\/h3> – A real tone-ic for the FMer …… WA7NMO 25

Power Inverter w\/sine Wave Output<\/h3> – For people with short extension cords …… W7OXD 29

450 MHz Preamp<\/h3> – 10 dB gain on the receiver is a lot easier than on the transmitter …… WB6BIH 33

Roof Mounted VHF Whips<\/h3> – Phacts and phallacies …… WB6HYD 39

LED Readout Crystal Switch<\/h3> – Make everyone green with envy …… WA3AJR 47

Voltage limit Sensor<\/h3> – Car battery warning light …… W4UXJ 53

Build a Digital Clock with 19 inexpensive ICs<\/h3> – Is that round clock doomed? …… WA6QVQ 55

Portable Use for the HR-2A<\/h3> – Judi Repeater approves of this …… W2KPE 61

Fixed and Mobile 2m Antennas<\/h3> – How to make your car look ridiculous …… WB8HEE 63

Two Meter FM Transmitter<\/h3> – Roll your own …… WB6BIH 65

Mini-repeater Control System Part II<\/h3> – Have you read the book yet? …… WA0ZHT 71

Audio Boost for Mobile Transceivers<\/h3> – Mobile audio booster IC …… W2EEY 81

6m 5W Amplifier<\/h3> – For the kitchen table builder …… K1CLL 83

Hand Transceiver Madness<\/h3> – Got yours yet? …… W2NSD\/1 89

QRP on 180 kHz<\/h3> – Tried 1700m yet? …… W5SOT 93

Solid State Automobile Burglar Alarm<\/h3> – Blows horn or siren …… WA1KON 97

Circuits Circuits Circuits<\/h3> – Keep ’em coming …… WR1AAB 105
\n
\n

73 Ham Radio Today Issue June 1973<\/a>
<\/h2>\n

Simple Generator for 222 MHz<\/h3> – This three transistor oscillator and attenuator will enable you to tune up a 222 receiver or antenna and measure the sensitivity. There are still new worlds to explore -try 222 …… K1CLL 23

Miniature 80 and 40 Meter Antenna – Brand new idea for the experimenter<\/h3> – don’t say there isn’t anything new that amateurs are working on. Get cracking …… W2EEV 29

UHF Output Meter<\/h3> – Accurately measuring rf power at 444 MHz is a problem …… K2EE 37

FCC-approved Repeater Application Info<\/h3> – Makes nice reading on a sunny afternoon …… FCC 46

Color Slow Scan Television<\/h3> – A system for direct viewing of color slow scan. What next? …… K4TWJ 49

RTTY Autoswitch<\/h3> – Great for two meter RTTY …… K2YAH 51

40 Meter Transmitter<\/h3> – Hybrid rig for inexpensive fun on 40 CW. Good Novice rig ……WB6BIH 55

Polar Mount for Moonbounce<\/h3> – Don’t all rush to make this up okay? …… W4KAE 59

The Urban Quad<\/h3> – Tri-bander you can make good performer …… K3MNJ 63

Understanding Reflected Power<\/h3> – Oddly enough very few engineers understand it. Read and confound the experts …… W5JJ 65

The K2OAW Counter Improved<\/h3> – Improved accuracy timebase check burnout protection etc …… W9CGI 70

The Perfect Summer Job<\/h3> – A 73 work-ethic special. Combine hamming with a vacation and get paid for it …… WA8MLG 75

Double Coaxial Angenna<\/h3> – Get Increased bandwidth with this all coaxial folded dipole …… W2EEY 79

Non-falsing Tone Decoder<\/h3> – A circuit that keeps illegal transients from tripping your COR …… W1ELU 83

Calibrated Signal Strength Meter<\/h3> – Did you calibrate your antenna to the meter or vice versa? …… VE3CES 85

Portable FM Battery Pack<\/h3> – An easy way to fake it if you can’t afford a hand unit …… K4YKB 87

An In-circuit Ohmmeter<\/h3> – Tackle squeamish circuits with this low current device …… W6HDM 91

Amateur Rules and Regulations Part I<\/h3> – Who will bet that they’ll change while we’re in midstream? …… FCC 95
\n
\n

73 Ham Radio Today Issue July 1973<\/a>
<\/h2>\n

Tuneable Oscillators for 2m FM Receivers<\/h3> – ICs are a lot cheaper than crystals …… K1CLL 21

Basic ATV System<\/h3> – A T-44 transmitter strip does most of the work …… WB0FQF 29

High Performance Small Yagis<\/h3> – Mount a supercharger on that 2 element beam …… WA3CXG 33

Multiple Output Frequency Standard<\/h3> – Lets you calibrate your receiver in .0625 Hz increments …… W4HSA 37

Digital Identification Unit<\/h3> – Be ready when you’re asked to produce your papers …… K1OZS 39

Topographic Repeater Maps<\/h3> – Docket 18 8 03 forces us to run a free ad for the government …… USDI 50

DX Mobile Installation<\/h3> – Add horsepower to an otherwise low octane signal …… K4TWJ 53

450 MHz Power Divider<\/h3> – Easily constructed matching system for stacked arrays …… WA3AXV 57

The Role of the FCC<\/h3> – Does it serve and protect or unnerve and reject? …… W2NSD\/l 59

CW Filters Bared and Compared<\/h3> – Complete with scope traces and bandwidth specs …… W6AGX 65

85 dB Gain 2m Antenna<\/h3> – Don’t submit this one to the FCC …… K1TKJ 71

Compromise Multi-band Antennas<\/h3> – Do you expect to work all bands without compromising? …… W2EEY 75

Spinoffs from NASA<\/h3> – Our undercover agents are stopped by nothing …… WB2ICV 83

Grid-dip Tuning the Quad Antenna<\/h3> – Something to do on a hot afternoon …… VE3GSP 87

Amateur Rules and Regulations Part II<\/h3> – This month Jason and the Argonauts battle seasickness in the Aegean …… FCC 91
\n
\n

73 Ham Radio Today Issue August 1973<\/a>
<\/h2>\n

Single Band Log-periodic Antennas Part I<\/h3> – Easier than falling off a tower …… W4AEO 21

Squeaker for Tone Burst Entry<\/h3> – Any tone any time …one tiny chip …… K9KIC 27

VHF Power Amplifier Design<\/h3> – If you remain unconvinced about building that amplifier maybe you ‘re holding the magazine upside-down …… K6RAD 31

220 Goes CB<\/h3> – A new game plan: Upgrade the Mississippi Blacksnake to Class E …… FCC 37

The Amateur’s Intercom<\/h3> – For duplex QSOs with the kitchen …… K1CLL 39

Novel 160 Meter Antenna<\/h3> – A wraparound antenna remember the hula hoop? …… W2JKI K2EE 43

Solid State SSTV Monitor<\/h3> – Features magnetic deflection noise immunity tuning indicator-here is the monitor you’ve been waiting for …… WB8DQT 45

Low Cost Frequency Counter<\/h3> – A counter like any other …but this one is cheap…… Harper 57

VOM Design<\/h3> – A simple VOM with cheap available parts …… WA3JBN 63

QRP Transmitter<\/h3> – Get that 1609.344 kM per Watt award with this simple two transistor rig …… WB6BIH 65

The Numbers Game: DXCC<\/h3> – Where do you fit in the charts? …… WA9VGS 69

Solid State Exciter for 450 MHz<\/h3> – K1CLL rides again …… K1CLL 71

Talk Power and FM<\/h3> – Don’t forget to give a ten count while you read this article …… W2EUP 79

Amateur Rules and Regulations Part III<\/h3> – This month the Ancient Mariner fearfully eyes the 220 Albatross on page 37 …… FCC 87
\n
\n

73 Ham Radio Today Issue September 1973<\/a>
<\/h2>\n

73 Visits Jordan<\/h3> – Wayne smuggles in the dynamite Mideast dope …… W2NSD\/l 12

JY Amateur Listing<\/h3> – A pre-callbook item …… JYl 26

Repeater Logic System<\/h3> – Another Step toward the sentient repeater …… WA1OMS 27

Single Band Log Periodic Antennas Part II<\/h3> – Assembly details installing trees etc …… W4AEO 37

2m Calibrator and Alignment Aid<\/h3> – Handy if you’ve built a tune able adaptor for y our FM rig …… K1CLL 43

How to PLL<\/h3> – Look where you’re going first …… W9KXJ 47

The Patch Pad<\/h3> – Soften the job for a hard-working working repeater …… K4MOG 51

S-meter for the HW-7<\/h3> – The HW-8 unveiled! …… WA6QYU 53

OSCAR 6 Inverted Doppler<\/h3> – Possibly related to the inverted dupplet …… W0MJS & W0LER 57

L’eggs Injector Antenna<\/h3> – An Easter egg hunt in September? …… W1SNN 61

2m Converter<\/h3> – One more factor for your conversion table …… WB6BIH 65

An IC Keyer<\/h3> – For the properly spaced-our CW freak …… VE3GSP 69

Measure Antenna Impedance<\/h3> – With a modified SWR bridge …… W2AOO 73

Potentiometers<\/h3> – How to vary a variable resistance …… Centore 77

Easy Antenna Pruning<\/h3> – Ever break your leg falling off of a graph? …… W3GAT\/2 79

73 Visits Sentry Crystals<\/h3> – A visit to Fort Knox …… W2NSD\/1 81

Amateur Rules and Regulations Part IV<\/h3> – This month Ahab finds that he has wandered into a local bait shop …… FCC 85

The QSL Manager<\/h3> – and how to handle him …… W4NJF 91
\n
\n

73 Ham Radio Today Issue October 1973<\/a>
<\/h2>\n

Converting the G.E. Pocket Mate<\/h3> – Transform a pocket transceiver into a pocket transceiver! …… WB4DBB 13

Frequency Measurement at Microwaves<\/h3> – Be prepared for equipment with tiny knobs …… WA9VFG 17

2m Front End Using One IC<\/h3> – A high performance 6 transistor design …… K1CLL 21

Instant Replay for your Tape Recorder<\/h3> – A tape recorder is a must for Slow Scan …… W6FPO 29

2KW PEP Building-block Linear<\/h3> – Module design leaves room for improvement …… W2EEY 31

Yet Another Wattmeter<\/h3> – Did you build your first one yet? …… K5CXN 39

Metor Legerdemain<\/h3> – Pull a rabbit out of a broken VOM …… WB2PAP 43

Europe’s DX Repeater<\/h3> – Is 2m WTW a future possibility? …… W2EEY 49

Two Band Balanced Dipole<\/h3> – Another high-wire act for your backyard …… W2OZH 57

A Digital “HI” Generator<\/h3> – Even a Chevrolet can learn CW …… WA6JMM 61

Oscillating Ring Counter<\/h3> – October foolishness …… Weinstein 67

Frequency Multiplication with Transistors<\/h3> – Bill Hoisington turns down his thumb at the standard circuits …… K1CLL 69

Amateur Rules and Regulations Part V<\/h3> – This month the watertight compartments of the Titanic are explained in detail …… FCC 77
\n
\n

73 Ham Radio Today Issue November 1973<\/a>
<\/h2>\n

Getting Started On 450 MHz<\/h3> – Hurry before someone proposes a Class F! …… K1CLL 21

Getting Started On ATV<\/h3> – Simple circuits for the beginning ATVer …… WA7NMO 26

NI-cAD Battery Life-saver<\/h3> – Insures cold starts …… K2ETN 35

The Heath GR-110 Scanning Receiver<\/h3> – A plus for Heath …… W3WTO 39

Is Your Autopatch Legal?<\/h3> – Or are you just pretending …… W3YVV 49

Frequency Aperture Modulation<\/h3> – FAM makes another appearance …… W2BSP 53

VOM Range Extender<\/h3> – You can do more than just lengthen the test leads …… W2EEY 59

AC Power Supply for Portable Rigs<\/h3> – You can’t operate portable 100% of the time! …… WA3EEC\/1 63

A Radiating Loading Coil<\/h3> – An indoor antenna that might pass as a weird lamp …… W0FEV 65

Peak\/notch Audio Filter<\/h3> – A worthwhile addition to your rig …… W6AGX 69

Power Failure Protection<\/h3> – Make sure brown out doesn’t spell burnout …… Ives 73

160 Meter Antenna Coupler<\/h3> – An improper antenna is no longer an excuse for staying away from 160 …… W2LT 75

HT-100 – 1Watt. PL and Touchtone<\/h3> – Buy your way to happiness …… K6VGP 77

Independent Sideband<\/h3> – SSTV\/sSB – Narrate your Slow Scan program …… W9NTP WB8DQT 83

The Elusive 100 Countries<\/h3> – This month’s tale of International intrigue …… VE3CEA 87

Complementary-pair Audio Amplifier<\/h3> – Transistors get lonely too …… W5SOT 93

Amateur Rules and Regulations Part VI<\/h3> – This month the Bounty sets its sails to the south hoping to find breadfruit …… FCC 103
\n
\n

73 Ham Radio Today Issue December 1973<\/a>
<\/h2>\n

IC Code Speed Display<\/h3> – Check the FCC’s code machine with this one …… VE1BU 25

2 Meter Linear Amplifier<\/h3> – In case you want to try Moonbounce …… W4KAE 29

A Simple IC Keyer<\/h3> – Nice 3 IC Keyer …… K2BLA 37

Precision Waveform Generator<\/h3> – Sine square and sawtooth waves from one IC …… VE3GSP 41

Helical Resonators<\/h3> – Rise from the depths of QRM …… W0PSF\/2 49

Sensitive RF Voltmeter<\/h3> – Check out your rig’s emotional problems …… WA6NIL 53

The Greenie<\/h3> – The first half of a possible Christmas article …… K1YSD 63

Rapid Receiver Control<\/h3> – Using touch switches …… W2EEY 67

Increase SSB Efficiency<\/h3> – With this simple mic preamp …… WA6QJU 71

Identifying Unmarked ICs<\/h3> – Cash in on surplus bargains …… WA6IGU 73

The QSL From BY Land<\/h3> – QSL QRT…… KA6IX 79

Sequential 2-tone Decoder<\/h3> – For the bust repeater that needs more than single tone access …… W3JJU 81

A Satisfying Minimum Regulator<\/h3> – A throw together regulator for quick projects …… KL7EVO 87

Take-apart 2 Meter Beam<\/h3> – Folds down like an aluminum Christmas tree …… W1BHD 89

Making The Most of Auto ID<\/h3> – Autocall anyone? …… K6HKB\/1 91

Choosing and Using an Electronic Calculator<\/h3> – Some outlets carry 10-15 models! …… K2OAW 97

Optimum Design of CW Filters<\/h3> – Electronic and physiological factors …… W6AGX 107

Amateur Rules and Regulations VII<\/h3> – This months a crowd gathers to witness the sailing of the Spanish Armada …… FCC 117
\n
\n

73 Ham Radio Today Issue January 1974<\/a>
<\/h2>\n

Wide Range Audio Oscillator<\/h3> – Cheapskate special – uses one 50 cent IC …… W2EEY 25

Another ID Generator Circuit<\/h3> – Mobile fixed; for FM SSB and RTTY …… W9DTW 29

Expanded Range Line Monitor<\/h3> – 110 -120V ac full scale metering …… WA0ABI 34

Oscillators on 432 and 1296 MHz<\/h3> – Inexpensive UHF experimenting …… K1CLL 35

Simple Active Filter<\/h3> – For CW SSB RTTY etc …… W6AGX 41

Video Tape Recorders<\/h3> – Better’n movies …… WB8HEE 43

Inexpensive Decimal Counting Unit<\/h3> – For all those uncounted decimals …… VE3CWY 47

Whistle up a QSO<\/h3> – With tape cassettes …… K1YSD 55

10 Meter Tuner<\/h3> – Beginners’ construction project …… K1CLL 57

FAX Converter Using IC’s<\/h3> – More Fax facts …… K6LJY\/7 63

Simple Touchtone Pad<\/h3> – Using the 1035C3A pad …… WA3EEC\/l 13

The $1000 Antenna System<\/h3> – Conservatively estimated …… WA6CPP 77

Special Considerations for Digital Design<\/h3> – Line noise spurious signals and crosstalk problems …… K3VKC 83

Selectable Voltage Power Supply<\/h3> – Beginners project which will be useful for years …… WB6BIH 81

Three Wavelength Loop for 20M<\/h3> – 4 dB gain …… G2FXQ 89

Visiting Regency<\/h3> – With a look at the HE 220! …… Staff 91

A Versatile Code Practice Oscillator<\/h3> – Two IC’s …… Wilson 93

Wiring Harnesses Made Easy<\/h3> – In jig time …… VE4RE 97

How to go Mobile<\/h3> – Though compact imported or married …… WA1GNX 101

Unbreakable Antennas for the TR-22<\/h3> – For when you break your whip …… K9KIC 105

Leading Zero Suppression for Digital Displays<\/h3> – Getting rid of nothing …… W1DMU 107

Automatic Touchtone Dialer<\/h3> – Using tape cassettes …… K4TWS 111
\n
\n

73 Ham Radio Today Issue February 1974<\/a>
<\/h2>\n

Understanding the Slow Scan Monitor<\/h3> – It’s awfully simple …really …… K4TWJ 20

Integrated Circuit Audio Amplifiers<\/h3> – IC Audio Amplifiers Handbookette …… Kenney 25

A Simple Sweep Generator for Monitor Scopes<\/h3> – Very very simple …… WA2HNJ 32

New Regulations (1938)<\/h3> – A dated article …… K2PMM\/f8 34

Quick ‘n Easy 15 or 20 Meter Vertical<\/h3> – Using el cheapo TV masts …… KH6HDM 37

Telephone Control and Monitor System<\/h3> – Operate your rig by phone …… K1CLL 41

Modifications to Heathkit GC-l005 Digital Readout Clock<\/h3> – You’re out of luck if your day has only 23 hrs and 56 mins in it …… WA0KHV 50

Cook a Better Circuit Board<\/h3> – Don’t forget to use a dash of cardamom …… WB4MYL 52

A Variable Q Audio Filter<\/h3> – For CW …… WA4DCN 54

Another Blown Fuse Indicator for Low Voltage<\/h3> – Using an LED …… K6HKB\/l 57

Building with Ten-tec Modules<\/h3> – A 20\/40m QRP transmitter using modules …… WB2WYO 60

Simple Audio Preamp<\/h3> – How to increase your intelligibility and live a fuller and more useful life …… W6JDD 69

An Integrated Circuit SWL Receiver<\/h3> – Hey here’s an easy and fun project! …… W1GOG 71

432’er Final Assembly on the Air<\/h3> – At last! …… K1CLL 77

Transistor Keying Circuit<\/h3> – You’ll never use relays again …… K6OLG 90

Low Cost Seven Segment Readout<\/h3> – Interfaced with Nixie driver …… WA2AOO 95
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\n

73 Ham Radio Today Issue March 1974<\/a>
<\/h2>\n

The Sensuous Cavity<\/h3> – An easy way to cure spurious emissions and a host of other ailments …… K8JNE 17

Sexton’s Laws<\/h3> – From the First Book written in the Second Epoch …… WB6CHQ 25

Constant Current Sources<\/h3> – Question of the month : What should the ideal op amp have? …… K3VKC 29

Easy Calculations<\/h3> – (Let’s see 2 + 2 = 5 …ed.) …… K6TXR 31

The World of X-band<\/h3> – Starring: Ray Milland Diana Van Der Vlis and Harold J. Stone …… KlCLL 33

An IC Preamp That Doubles as a Tone Generator<\/h3> – Read about this startling identity crisis …… W6GXN 45

Increased Speed for the K2OAW Counter<\/h3> – As if it weren’t fast enough already …… W4CUG 49

ABI Notes<\/h3> – Tip Tip Tip Tip Tip Tip Tip Tip Tip Tip …… WA0ABI 53

A Six Meter Transceiver<\/h3> – You can convert the June 1973 (page 12 73 Magazine) CB construction project to 6m using thisarticle …… W5QWY \/0 61

Macro-iC-ology<\/h3> – A Blowup of an article …… W3KBM 67

How the Communications Receiver Began<\/h3> – Overnight success hasn’t gone to its head …… Moore 69

The Truly Great Ham<\/h3> – (Ahem recognition at last …ed.!) …… Sargent 75

Initial Generator<\/h3> – This does not necessarily have to be your first generator …… W8JIX 77

Regulated Oscillator Screen for the ART-13<\/h3> – A surplus article …… WA9IHV 79

Estimating Power Transformer Ratings<\/h3> – If you’re really finicky don’t read this article …… W6FPO 80

The Quiet Maker<\/h3> – Shhhh!!! …… W2EEY 81

Frequency Netting of the Older Motorola FM Units<\/h3> – Go out and buy an old Motorola FM unit so you can read this article …… WA0GUD 85

The AM 1187\/tRC on 450 MHz<\/h3> – Better buy one of these while you’re at it …… K3ZKO\/aFA3ZKO 91

Using the Drake R4B Receiver as a 2m Signal Generator<\/h3> – Wow!!!! …… W5ACK 93

FM Conversion of G.E. Low Power Industrial Transceivers<\/h3> – Get out your checkbook for this one too …… WB4MYL 95

Amateur Rules a nd Regulations VIII<\/h3> – This month finicky Balboa sets sail to discover the Specific Ocean …… FCC 98
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\n

73 Ham Radio Today Issue April 1974<\/a>
<\/h2>\n

Delayed VOX for Repeaters<\/h3> – Kachunker filter …… WA3VXH 17

FM Autostart<\/h3> – Will start you a recorder or all Hell …… WB2VRW 21

New Breed on 2m FM<\/h3> – Make big money as a license consultant …… K2PMM 25

Black Box Frequency Converter<\/h3> – MARS CAP etc. -all with your ham transceiver? Yup! …… W5JJ 35

How to Make the How-tOs Work<\/h3> – Big news for flaccid brains …… W4RMD\/9 51

2m Hybridized Transmitting Converter<\/h3> – VHF SSB the easy way? …… WA0PFL 55

Testing RF Properties of Some Common Insulators<\/h3> – How to fill up some time …… KH6IJ 62

Operating From a Sauna Bath<\/h3> – No sweat you say? Balderdash! …… WA4NXC & W4YYF 63

Control Panel for your Scanning Transceiver<\/h3> – Giving your scanning transceiver some head …… WA4SAM 67

CBer’s Glossary of Amateur Terminology<\/h3> – 73 likes to help CBers in every way …… K4ADL 74

A Tuning Hint for RCA FM Equipment<\/h3> – By the numbers …… WA9FGP 77

Rock Solid Subaudible Tone Generator<\/h3> – Using a crystal and dividing down …… WA8YDC 79

Amateur Rules and Regulations IX<\/h3> – Dramatic Conclusion: At long last our journey over the high seas has come to an end. Where’s the port? …… FCC 87

First U.S. Licensed Remote Controlled Repeater<\/h3> – See the cover then read this story …… K6BIG 93

1974 Repeater Atlas of the World<\/h3> – The entire world in 5 pages of small print …… Staff
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\n

73 Ham Radio Today Issue May 1974<\/a>
<\/h2>\n

ICs Upgrade the CD Ignition System<\/h3> – A B+ article …… W1KNI 17

Adding dBs to the Audio Compresser<\/h3> – Expanding upon new ideas …… W2EEY 21

Finding a New Home for the Mobile Rig<\/h3> – Some hams will go to any lengths …… WA8QNR 27

Interference Suppression for Amateur Boat Owners<\/h3> – Let us not forget our Maritime Mobile friends …… DL5KS 31

Heath HW-202<\/h3> – Review of a very popular rig …… W3WTO 37

Simple Mobile Alarm System<\/h3> – There’s beauty in simplicity …… K6SUB 39

Reducing Mobile Noise<\/h3> – Stop turn signal noise – drive in a straight line …… VE3FGS 41

Newtronics CGT-l44 Antenna<\/h3> – Try one of these and gain a good antenna …… K4TWJ 43

Another Burglar Alarm<\/h3> – Add this one to your car too – be safe in case your other one is stolen …… WA2OJT 45

Two High Grain rf Stages in One IC for 2m FM<\/h3> – Two for the price of one! …… K1CLL 47

OSCAR Special Converter – Build it quick<\/h3> – last chance to hear OSCAR 6 …… W2EEY 53

Toward Mobile Security- You pays your penny<\/h3> – you takes your choice …… WA1JOS 59

Improving the Pearce-simpson Gladding-25 Bimini VHF<\/h3> – It’s not what you do – it’s the way how you do it …… WA4DXI 61

Putting Yourself on TV<\/h3> – Overnight stardom can be yours …… WB8HEE 65

Catching the 2m Streaker<\/h3> – Another route to stardom …… WB0FKZ 67
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\n

73 Ham Radio Today Issue June 1974<\/a>
<\/h2>\n

Poor Man’s Quad<\/h3> – The Adventures of George The Antenna Maker …… W6SUN 17

Reconciling the Long Squared Quad<\/h3> – Developing a new type antenna …… W4KAE 27

Antenna Load Indicator<\/h3> – Whoops there goes another swisher! …… W5JJ

Matching<\/h3> – The poor little match girl and her coathanger …… WB2PAP 37

Remotely Tunable Antenna Coupler<\/h3> – Watch out Johnson …… W2EEY 45

A Practical Ground System for 160<\/h3> – Makes a difference! …… W6FPO 51

Wide -range Antenna Tuner<\/h3> – For wide range antennas …… VElTG 55

Old Antennas and New Baluns<\/h3> – Build a double zepp …… W2EEY 59

A Multiband Ground Plane<\/h3> – 10-40 meters …… WA8IYL 63

Mod Quad for Frustrated Cliff Dwellers<\/h3> – The old hidden antenna game …… WN3QBK 65
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\n

73 Ham Radio Today Issue July 1974<\/a>
<\/h2>\n

Modern 4-1000A Linear<\/h3> – At last -a use for that 4-1000A lying around in your junkbox …… K8UIR 17

“Free” Batteries for TT Pad Power<\/h3> – 73 lands another great article …… W3WTO

The Scotch Transistor<\/h3> – Hoot Man you don’t have to throw it away after all …… WA9UFG 31

Poor Man’s Universal Frequence Generator<\/h3> – Only after you build it …… W2EEY 33

Universal AFSK Generator<\/h3> – An article of cosmic importance …… K6IQL\/n0ZIP 37

Cheap 10-mmute Timer for the Shack<\/h3> – Price does not necessarily indicate shoddiness …… WB2VRW 47

Low Frequency Phased Array<\/h3> – Here’s one to satisfy all you 80m buffs …… W2OZH 49

DC Isolation of RF Amplifiers and Modulators<\/h3> – Another great one from Bill …… K1CLL 55

Little Bill<\/h3> – A neat little transmitter …… W9WBH 63

3000V DC Supply<\/h3> – Here’s something to do after you finish your 4-1000A …… K8VIR

Diagrams<\/h3> – At long last an easy way to tell the difference between a resistor and a tube …… WB2PAP 73
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\n

73 Ham Radio Today Issue August 1974<\/a>
<\/h2>\n

Directional Wattmeters and Novel SWR Meter<\/h3> – Build every thing in this article and give your retflecto meter a rest …… G3PDM 17

FETS on 450 MHz<\/h3> – Nobody can build an rf amplifier like Bill …… K1CLL 27

GDO To Find C<\/h3> – A unique 1000pF reader …… G3OGR 35

Super Trimline for 2<\/h3> – Maybe no one will notice if you borrow the extension in the bedroom for a while …… K4TWJ 37

R-390A Modifications for Improved Performance<\/h3> – A great buy – if you can get it …… W6ONL 39

R-392 On The Air<\/h3> – A great buy -if you can get it (sounds familiar) …… W7UGV 47

Super Selective CW Tracking Filter<\/h3> – You’ll flip over this one …… W2FSO 49

An Audible Voltmeter<\/h3> – Here’s one you’ll really enjoy …… WA0AQC\/9 55

Midland 2m Base or Portable<\/h3> – A review of interest …… WB4MYL 61

Cheap and Easy 230V AC Power Supply<\/h3> – A must for everyone …… K5LLI 64

Universal Power Supply<\/h3> – Five power supplies for the price of one …… Calvin 65

Review of Grounded Cathode Linears<\/h3> – Learn all about the mysterious class X amplifier …… W7CSD 67

Slide Rule Rules<\/h3> – After reading this 10 to .1 you’ll no longer have to guess about where to put that decimal point …… K8GOU 72

SSTV Scan Converter<\/h3> – Sensational Article – Don’t Miss It! …… W0LMD 73

House Cleaning The Logical Way<\/h3> – Perspicacity all the way – that’s what I always say …… W3HPX 85

ID Timer<\/h3> – After you build it you’ll probably sit and watch it for hours …… WB4MYL 95

Fail Safe Switching Improved<\/h3> – Get out your October 1971 73 – here’s an update …… Hunt 97
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73 Ham Radio Today Issue September 1974<\/a>
<\/h2>\n

MOSKEY -part 1<\/h3> – Win contests with this programable keyer …… W3HPX 19

A Severe Weather Warning Net?<\/h3> – Why not with this monitor? …… W9DTW 27

A Agitable<\/h3> – Make better p.c. boards …… WA0ABI 41

LXpedition<\/h3> – Peripatetic Edgar Bently’s to Luxembourg …… G3BID 43

Six Meter DXing<\/h3> – You can make WAS on 50 MHz …… WA6CPP 49

Questions<\/h3> – 2m quad feed -sX101 -gS680 …… W9EGQ 51

Heath 10-103 Mods<\/h3> – Ten more calibrated sweep speeds …… McCarthy 55

Mono Reproducer<\/h3> – Absolutely foolproof circuit …… K9VXL 57

6m QRP Transmitter<\/h3> – Using an OSC module …… WA8DEB 59

RF Speech Clipper<\/h3> – Inexpensive yet effective …… W2EEY 61

Lecture Beamed to Class<\/h3> – Another use for amateur radio …… Lemert67

My Favorite Band<\/h3> – 80m- What’s yours? …… W0SII

The Audio Bishop<\/h3> – Bishop noise limiter circuit …… W6AJZ 71

A Visit to 4U1ITU Geneva<\/h3> – You too can be rare DX – just bring your ticket …… WA3KEY 73

Measure Your Voltage Rating<\/h3> – Set arc gaps and stuff …… W9SIA 76

120V Variac on 220V<\/h3> – Simple when you see how …… W4GD 78

Weather Satellite on Your SSTV<\/h3> – With a converter …… WA8DQT 79

Do Something About<\/h3> – Now you can read it again …… K3BNS 85

Nostalgia<\/h3> – 40 and 50 years ago! …… WB6JNI 93

A Universal IC Tester<\/h3> – Almost …… WB4MYL 95

Making It Small<\/h3> – Emphasis 2m …… K1CLL 98

An Easy Tower<\/h3> – Build it Yourself …… W4VUO 103

Infinite Attenuator<\/h3> – Low-cost VHF test unit …… K1CLL 107

Lightning in a Bottle<\/h3> – Electronic flash tubes …… W2FEZ 109

Modernizing The Select-o-ject<\/h3> – Still one of the best cw filters …… WA6KPG 114

Profile -w5RU<\/h3> – A very famous DXer …… K6GKX 121

It Happened in Mexico<\/h3> – And it was worse than Montezuma’s revenge …… W9CNW 127
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73 Ham Radio Today Issue October 1974<\/a>
<\/h2>\n

The FCC As Seen By<\/h3> – The old Roshoman bit …… W6EIF 20

Introduction to Micro Transistors<\/h3> – Build this 6m transmitter …… K1CLL 24

Build a 2m Frequency Synthesizer<\/h3> – Part I …the theory …… W8KBC 31

Repeater Government Guide<\/h3> – Laws and by-laws …… W5OJZ 37

The Heath HWA 202-1: Any Good?<\/h3> – Reader test report – did he like it? …… W3WTO 41

Simple Power Supply for Digital Work<\/h3> – Actually it’s complicated …… K2OAW 43

Flood Emergency!<\/h3> – Hams save the day as usual …… VElAIL 45

The GDO the VOM the XYL<\/h3> – Each has its place when repairs are called for …… W5ZKL 50

Selective Calling Via Repeaters<\/h3> – With this touch pad decoder …… W5LCT 51

How To Stop Antenna Rip -offs<\/h3> – Removable mobile vhf antennas …… K2PMM 55

Two Meter Lids -exposed!<\/h3> – Not thee or me -right? …… WB8JYR 61

Two Meters Ain’t Twenty<\/h3> – How to lose friends -easily …… VE3FEZ 64

Mighty Motorola Meterer<\/h3> – Those 80 D’s are cheaper ‘n rice boxes …… K4HHI 65

AM on Repeaters? Holy Moly!<\/h3> – Heresy in San Mateo …… K6QFO 67

Water pipe Antennas for 2m<\/h3> – Correcting alotta bum dope that’s out …… WA1KJU 69

Is Your Deviation Wrong?<\/h3> – Well set it right -simply …… VE3FGS 75

Get More Zap With This 2m Antenna<\/h3> – The wonders of the coaxial dipole …… VK2BAU 77

Build This Two Transistor I-f Strip<\/h3> – Use it with hf and vhf converters …… K1CLL 79

San Francisco: A Big Moment!<\/h3> – Repeater history is made …… WA6AXV 86

Win CW Contests With Moskey<\/h3> – Part II -memory better than an elephant …… W3HPX 89

You Can Tune Oscar 7<\/h3> – On 3 bands with one receiver! …… W3HUC 98

Exciting New Carbon Mikes<\/h3> – High output with excellent quality …… K2PMM 99

Kill The TVI Demon<\/h3> – With this low pass filter …… WB4MYL 102

How To Say It In Ham<\/h3> – Primer for XYLs …… W4SCF 104

A Foreign Language!<\/h3> – New zest for your QSOs …… WA1GFJ 108

Make 6m Come Alive<\/h3> – With this simple p re-amp …… K9VXL 111

Are You Wasting RF Output?<\/h3> – Anode vs power output tuning …… G3BID 114

WWV Time With Any AC\/dC Radio<\/h3> – 10\/15 MHz with this one-tube converter …… K3SCW 116

Can Your Extension Cords Start A Fire?<\/h3> – Handy guide to overload prevention …… W6DDB 117

Prevent NCX-5 Burn out<\/h3> – Simple mod and tube replacement …… WA1FBE 119

An “Invisible” Antenna That Works<\/h3> – For apartment dwellers and travelers …… G3ZCZ 121

Fast On The Trigger SSTV<\/h3> – Automatic vertical trigger circuit …… W9HTF 124

The HT-144B: Is It Really Good?<\/h3> – Reader report on new HT kit …… W1HCI 126

Cover : First Beefeater Ham<\/h3> – May manufacture gin poles …… G3LEX 130
\n
\n

73 Ham Radio Today Issue November 1974<\/a>
<\/h2>\n

Dipole Antenna Tuning<\/h3> …… WA4RSX 20

Latest Counter Update<\/h3> …… K2OAW 26

Who Needs A 5V Supply?<\/h3> …… WA0ABI 36

How To Win A Big Contest<\/h3> …… VK4SS 37

Digital Wind Direction Indicator<\/h3> …… W2AOO 40

Build A 2M Frequency Synthesizer<\/h3> …… W8KBC 44

Experiment in Terror<\/h3> …… WA9VLK 66

A Wind-proof 20M Beam<\/h3> …… VE7DKR 67

Tones and How to Touch Them<\/h3> …… K1NUN 71

The Double Stub Matching System<\/h3> ……WA6CPP 73

How You Can Teach Novices<\/h3> …… WA9NJZ 75

Build This Digital SWR Computer<\/h3> …… W6OTG 80

A Real Hot Front End For Six<\/h3> …… K1CLL 88

Build A Basic Bridge<\/h3> …… WA0ABI 95

MOSKEY – Part III<\/h3> …… W3HPX 97

August 73 Converter Update<\/h3> …… W0LMD 105

Beep – Beep – Beep – Beep You’re High<\/h3> …… W2OC 108

What’s Really Inside The Regency HT?<\/h3> …… W2WTO 116

Would You Believe 187 000 Phone Patches?<\/h3> …… K7NZA 124
\n
\n

73 Ham Radio Today Issue December 1974<\/a>
<\/h2>\n

Making Nicads Behave<\/h3> …… K2OAW 24

Zillions of Parts For Nothing<\/h3> …… WB9MQY 36

C31 or Bust!<\/h3> …… DK8SQ 39

Wind Indicator For Your Shack<\/h3> …… W5ZG 41

Modified Weather Satellite<\/h3> …… WB8DQT 48

A Logical Keyer?<\/h3> …… K2QKO 53

The Perils of Novicehood<\/h3> …… WA1SNG 58

Can FM Simplex Be Solved?<\/h3> …… WA6CPP 65

Meters And Their Faces<\/h3> …… W5IUR 70

Slow Scan Tape Secrets<\/h3> …… K2ULR 73

Simple Probe Logic Check<\/h3> …… WA3SWS 76

Public Service Band Converter<\/h3> …… W9DJZ 78

Tuned Diode VHF Receivers<\/h3> …… K1CLL 81

Automatic SWR Computer Part II<\/h3> …… W6OTG 86

EI Cheapo Tower<\/h3> …… W7OXD 89

Hamshack Goodies<\/h3> …… W3WTO 94

Hamfest Wheeling And Dealing<\/h3> …… Flint 96

Rhombics And Their Worth<\/h3> …… WA6CPP 100

DX Chasing<\/h3> …… W4GKF 104

Heathkit GR-78<\/h3> …… W9KXJ 109
\n
\n

73 Ham Radio Today Issue January 1975<\/a>
<\/h2>\n

Using The W. U. Desk Fax<\/h3> …… K7QXL 25

How to Find the Satellite<\/h3> …… WB8DQT 31

RTTY Secrets<\/h3> …… W3JJU 42

The 432 Receiver<\/h3> …… K1CLL 46

The AN\/gR R-5 Receiver<\/h3> …… W6JTT 64

TTL a s a Decoder Mode<\/h3> …… W9CGI 57

Simplifying Satellite DXing<\/h3> …… WB5ASA 77

Blow a Bundle on TTLs<\/h3> …… K2OAW 81

The R-511 A Real Surplus Bargain<\/h3> …… W6JTT 86

How Not to be a Loser<\/h3> …… W9KXJ 91

The Versatile Transistor Checker<\/h3> …… W5WGF 94

SSTV Video Analysis<\/h3> …… WB8DQT 99

An All-band VHF Receiver to Build<\/h3> …… WB2AGJ\/2 105

Keep Amateur Radio a Secret<\/h3> …… K4ADL 113
\n
\n

73 Ham Radio Today Issue February 1975<\/a>
<\/h2>\n

Sneaky Fast Scan Monitor for SSTV<\/h3> …… W2FJT 26

Behold! -super Key<\/h3> …… K6ZN\/w6GXN 31

What Time is the Next Satellite?<\/h3> …… WB8DQT 46

CQ OSCAR 7<\/h3> …… W3HUC 54

How to Find a Satellite<\/h3> …… WA4WDL 62

Measuring Heating Oil Usage<\/h3> …… K2OAW 65

Mod Squad Hits the SB-102<\/h3> …… WA2KHK 68

FM vs. AM – which is really better?<\/h3> …… VE3DNR 70

Build Your Own Repeater – for only $365<\/h3> …… W1HCI\/w2EDN 76

The Heath SB-103?<\/h3> …… K9WQY 90

Get into a Grey Mood -generate<\/h3> …… W2FJT 93

Instant Neutralization<\/h3> …… WA0ABI 96

Phoenix Hams Show How It’s Done<\/h3> …… K7NZA 99

Oh the Lost Art of Diplomacy<\/h3> …… WN7KUD 108

Further Adventures of the Bounceless Switch<\/h3> …… W6GXN 111

Is Automated CW Possible?<\/h3> …… DJ0HZ 115

100 Countries on SSTV<\/h3> …… W8YEK 120

Joys of the One Night Stand<\/h3> …… W7CSD 123

KOX for CW<\/h3> …… WA5KPG 129

Quick Capacitor<\/h3> …… W2BJB 137
\n
\n

73 Ham Radio Today Issue March 1975<\/a>
<\/h2>\n

Can a 7 foot 40m Antenna Work?<\/h3> – The small loop …… W0PJG 33

The Secret of Antenna Gain<\/h3> – (Shhh -it’s capture area!) …… K2OAW 39

Twinlead Phased Array<\/h3> – Two elements on 40m – or any other band …… WB2NQT 47

The Incredible Capacitive Antenna<\/h3> – Now: an 18″ allband antenna …… W0KGI 49

An 80m Phased Array<\/h3> – Switchable directivity …… W2OZH 52

A Coax Amplifier for 450 MHz<\/h3> – 6 dB stacked collinear …… W5GDQ 58

Invisible Antennas<\/h3> – Why ask for trouble? …… WA8BHR\/5 61

Another Look at the Swan Beam Antenna<\/h3> – Testing …again …… WB6PDN 66

City Dweller ‘s Multiband Antenna<\/h3> – An inverted Windom? …… W4ATE 69

40m Inverted Vee Beam- Satisfying<\/h3> …… WA7OET 72

The Unofficial Standard Standard<\/h3> – Quack Rot Vice? ……W7IDF 74

The Mystery of Antenna Radiation<\/h3> – Is it still a mystery? …… VE3DDS 81

The Double Inverted Vee<\/h3> – A remarkable wire beam …… VK6IZ 91

A Short and Sweet 160m Antenna<\/h3> – Build this simple portable topbander …… W2NYU\/ WA1JJV 93

Pete’s Dipole<\/h3> – A better method of feeding …… WA4NWM 95

The Magic of the Log Periodic<\/h3> – Special Book Supplement …… W4AEO 97

Avoiding Traps with Antennas<\/h3> – Three great multiband designs …… Staff 126

A New National Amateur Radio Society for Canada<\/h3> – Introducing C.A.R.F. …… VE3VCA 129

Mobile SSTV Breakthrough<\/h3> – 73 discovers the cassette recorder …… W2NSD\/1 139

Yet Another Etching Technique<\/h3> – Something fishy here …… Anderton 143
\n
\n

73 Ham Radio Today Issue April 1975<\/a>
<\/h2>\n

Build This $50 HT<\/h3> …… WA5RON 17

Proof of the Extraterrestrial Repeater<\/h3> …… WB6IQS 21

Scanning with a Synthesizer<\/h3> …… WA0AQO 23

Poor Man’s BFO<\/h3> …… WB9BNF 36

The Torrid Toroid<\/h3> …… Harding 37

Voltmeter Switch Quiz<\/h3> …… WA0ABI 38

WR3ABC – The Inside Story<\/h3> …… K3BEQ 42

Eight Function Repeater Controller<\/h3> …… W3JJU 46

Nicads – A Shocking Expose<\/h3> …… WB6JPI 51

Preamp for the TR22C<\/h3> …… WB4SNC 53

Ma Bell vs. Foreign Attachments<\/h3> …… WB2PAP 56

Buyer’s Guide to HTs<\/h3> …… Staff 61

The Two Dollar Amplifier<\/h3> …… W8DYF 71

Lifting Ma Bell’s Cloak of Secrecy<\/h3> …… Whipple 76

The Identalert<\/h3> …… K2PMA 89

Try Attache Case Mobile<\/h3> …… W3WTO 94

Two Metering a Hustler<\/h3> …… W3HTF 96

Can Those Split-split Channels Work?<\/h3> …… WA6ITF 101

Saving the 15m Quad – By Converting it to 20m<\/h3> …… Staff 105

The Rime of the Ancient FMer<\/h3> …… K1NUN 108

A 2m Collinear You Can Make<\/h3> …… K4NOC 111

Do You Know This Man?<\/h3> …… WB4UAN 113

A New Q5er – The R-l1A<\/h3> …… W5SOT 116

Now – A 5\/16 Wave Antenna?<\/h3> …… K3VNR 117

ICOM T he New VHF Giant<\/h3> …… Staff 124

New Life for the SX-111<\/h3> …… W1HEO 139

Try 160 CW With This Transmitter<\/h3> …… W6JTT 142
\n
\n

73 Ham Radio Today Issue May 1975<\/a>
<\/h2>\n

IC Call Sign Generator<\/h3> …… VE3GSP 10

Faxing SSTV<\/h3> …… K6IGC 15

Fat Nixies for Chronometer Nuts<\/h3> …… W2AOO 23

Latest K2OAW Counter Update<\/h3> …… WB2UKP 30

How to Become a Famous Author<\/h3> …… K2OAW 33

Playing with Power on 432<\/h3> …… K1CLL 40

More Fun with the IC-230<\/h3> …… WA6VJR 45

Does Ether Cause Gravity?<\/h3> …… W6NLB\/7 49

Mother’s Day Special : The Violet Tester<\/h3> …… W2AOO 52

The TT-63A Regenerative Repeater<\/h3> …… WB4APC 55

Oscaring Your FM Rig<\/h3> …… WA4VUH 58

Inside Ma Bell<\/h3> …… Whipple

Getting Your Canadian License<\/h3> …… VE3ZS 71

In Pursuit of the Perfect SSTV Picture<\/h3> …… W2NSD\/l

AC Power for the HW-202<\/h3> …… W2AOO 79

Now What Have I Done?<\/h3> …… VE3FEZ 81

A Hefty 12 Volt Supply<\/h3> …… Anderton 81

ICM Kit 2m Converter<\/h3> …… KlCLL 90

Updating the Pocket Mate<\/h3> …… WB4DBB 97

You Can Work 75m DX<\/h3> …… WA6CPP 101

The Postage Stamp Squelcher<\/h3> …… K6JM 103

The T-278\/u Surplus Gem<\/h3> …… K0DAS 108

Disaster in Honduras<\/h3> …… Staff 114

Buyer’s Guide To 2m FM Transceivers<\/h3> …… Staff 120
\n
\n

73 Ham Radio Today Issue June 1975<\/a>
<\/h2>\n

Me Friend<\/h3> …… W7IDF 17

Homebrew this SSTV Monitor<\/h3> …… WA9MFF 22

El Cheapo Superbeam<\/h3> …… WA6NLQ 31

The Smart Alarm<\/h3> …… WA6KBL 37

An Intimate Look at 160 Meters<\/h3> …… W2NYU 43

RF Power at 432<\/h3> …… K1CLL 48

The Minirepeater<\/h3> …… WB4DBB 55

Inside Ma Bell<\/h3> …… Whipple 67

Dirt Cheap Tunable I-f for Converters<\/h3> …… K0VQY 81

6m IC Rx<\/h3> …… K1CLL 85

All Band Frequency Marker<\/h3> …… W1KNI 88

Protect Your Gear with a Latching Relay<\/h3> …… Ives 93

A Case for CW<\/h3> …… W0FEV 97

ID Timer<\/h3> …… WB4MYL 108

Build an 11 dB Coatrack<\/h3> …… WB0HKB WB0DQC 111

Front Burner for Six<\/h3> …… WB4DBB 115

A Digital Dial for Your Receiver<\/h3> …… W2AOO 119

Three on Fifteen<\/h3> …… WA5CNG 123

More Weather Satellite Pictures<\/h3> …… WB8DQT 128

Solid Gold PR: Washington!<\/h3> …… K4SHE 135

Tit for Tat and Others<\/h3> …… W4ATE 139

Presto! Transistor checker from VOM<\/h3> …… W8WLM 144

Easy BFO Project for All Wave Receivers<\/h3> …… WB4KTY 148

How to Put on a Professional Slide Show<\/h3> …… WA3AJR 155
\n
\n

73 Ham Radio Today Issue July 1975<\/a>
<\/h2>\n

Rare DX via Oscar?<\/h3> …… W1FTX 18

Antennas for Oscar – What Really Works?<\/h3> …… W3HUC 25

An Oscar Preamp that Works Wonders<\/h3> …… W3TMZ 31

Shoot Oscar with a Satellabe<\/h3> …… K2ZRO 33

Oscar – A Certificate Hunter’s Paradise<\/h3> …… K2QBW 47

Where’s Oscar?<\/h3> …… W3HUC 51

Oscar RTTY Converter<\/h3> …… K9PVW K9HUI 53

How You Can Take Oscar’s Temperature<\/h3> …… W3HUC 57

Really Zap Oscar with this Helical<\/h3> …… WB4VXP 59

Automating Satellite Reception<\/h3> …… WB8DQT 76

Eskimo Pie<\/h3> …… W1BNN 90

FM Alignment Oscillator<\/h3> …… WA3ETD\/2 93

Master Sync Generator<\/h3> …… W0LMD 96

The Audio Synthesizer for RTTY SSTV and whatever<\/h3> …… W0LMD 98

Ham Radio in the Arctic – 1925<\/h3> …… Douglas 103

Pack Rat Moonbouncing<\/h3> …… W3HMU 107

Gee What’s a Zepp?<\/h3> …… W3WLX 111

How Gates Work – A TTL Primer<\/h3> …… WB2NEL 113

Bargain Audio Frequency Source<\/h3> …… WA2CXD 118

Vertical Antennas for the Novice<\/h3> …… W8HXR 119

Do Textbooks Prevent Learning?<\/h3> …… Mocking 119

A Visit to the CB Store<\/h3> …… VE3FEZ 129

Preventing Regulator Carnage<\/h3> …… Anderton 132

The Ultimate in Variable Selectivity<\/h3> …… Staff 135

Phone Patching – A Public Service<\/h3> …… W8HXR 139

An S-meter for your Swan-250<\/h3> …… WB4DBB 156
\n
\n

73 Ham Radio Today Issue August 1975<\/a>
<\/h2>\n

The Oscar Zapper<\/h3> …… WB4VXP 12

Identalert C<\/h3> …… K2PMA 22

Digital SWR Computer<\/h3> …… K2OAW 25

RF Feedback The Experimenter’s Curse<\/h3> …… K1CLL 36

Surveying the DVM Scene<\/h3> …… W9KXJ 42

How About a Weather Satellite Monitor?<\/h3> …… WB8DQT 45

The QRP Accu-keyer<\/h3> …… WA5KPG 58

Catenary Suspense<\/h3> …… W1BNN 62

Copper Rip-off<\/h3> …… W7SHY\/6 69

Better Results from those Sweep Tubes<\/h3> …… K4TWJ 70

The Best Logic Yet<\/h3> …… WB5IRY 73

How to Compact Multiband Dipoles<\/h3> …… VE3GSP 80

Don’t Feed the Bears!<\/h3> …… Michigan Radio Doctor 92

The Wonderful Mini-chronometer<\/h3> …… W2AOO 95

An Accessory VFO – The Easy Way<\/h3> …… Staff 103

Modern Non-morse Codes<\/h3> …… K8BFH\/l 111

Build This Amazing Function Generator<\/h3> …… W6GXN 121

Charge that KP202<\/h3> …… VK3OM 141

So You Want Front-to-back Ratio?<\/h3> …… K7PVZ 147
\n
\n

73 Ham Radio Today Issue September 1975<\/a>
<\/h2>\n

The Calculating Counter<\/h3> …… Johnson 22

A Satellite Fax System You Can Build<\/h3> …… WB8DQT 39

Where is your simplified sensitive millivoltmeter?<\/h3> ……G3JQQ 49

Three Button TT Decoder<\/h3> …… WA0EDA 52

Underground Radio is Dirty Business<\/h3> …… WA3AQS 57

What’s Wrong with my SSTV?<\/h3> …… K4TWJ 62

Queen Roger Papa from Hotel Whiskey Seven<\/h3> …… W7IDF 69

40m DX Antennas – the Easy Way<\/h3> …… W8HXR 78

The Oscar Zapper<\/h3> …… WB4VXP 83

Digital SWR Computer<\/h3> …… K2OAW 91

Full Break-in at 60 wpm?<\/h3> …… WB6OMT 97

Odd Problems with an Old Antenna<\/h3> …… W2JTP 100

The Alligator Squelcher<\/h3> …… WB8EQQ 103

You Don’t Have a Power Failure Alarm?<\/h3> …… W9DJZ 105

Portable QRP Power Unit<\/h3> …… W8CHK 110

You CAN Fix It!<\/h3> …… W0HMK 118

Precision +10.000 V dc Voltage Reference Standard<\/h3> …… WA6VVL 124

Building a 135 kHz i-f Strip<\/h3> …… K1CLL 127

A True Tale of the Faked Fist<\/h3> …… W4ZBE 133

Adapting Telephone Handsets to FM Transceivers<\/h3> …… WA8LEM 137

Atlanta 1975<\/h3> …… W6LJU 140

ATV on 450 with a T44<\/h3> …… K0MOC 143

0-60 MHz Synthesizer<\/h3> …… Calvin 145

Bridging the Information Gap<\/h3> …… K3DSQ\/4 155
\n
\n

73 Ham Radio Today Issue October 1975<\/a>
<\/h2>\n

Build a Deluxe TTY Keyboard<\/h3> …… K7YPG 22

Op Amps: Basic Primer<\/h3> …… WB2NEL 33

Computers are Here – Are You Ready?<\/h3> …… W2NSD\/1 40

0-60 Hz Synthesizer<\/h3> …… Calvin 50

A Satellite Fax System You Can Build<\/h3> …… WB8DQT 60

Dispelling the Mystery of Regulated Supplies<\/h3> …… W1HCI 69

Digital Logic – Down Through the Months<\/h3> …… WB0DWV 87

Megger For Peanuts<\/h3> …… Bach 102

Say OM Are You a Computer?<\/h3> …… W2IAT 109

Digital Clock Time Bases<\/h3> …… W2AOO 114

Fast Dive on Five<\/h3> …… W1BNN 119

Introducing the Opdesk<\/h3> …… W8LWS 129

The 432er Goes Power – Like 1100 Milliwatts<\/h3> …… K1CLL 132

Ham PR vs Chaos<\/h3> …… WA2KBZ 160

Busy Hams Benefit Baja<\/h3> …… Patterson 166
\n
\n

73 Ham Radio Today Issue November\/december 1975<\/a>
<\/h2>\n

Flip Flops Exposed<\/h3> …… WB2NEL 30

Breakthrough in Fast Scan ATV<\/h3> …… WB4YTU 37

Strobing Displays is Cool<\/h3> …… WB4DCV 49

The Sensuous Tuned Lunch Box<\/h3> …… W2FEZ 52

Loudest Signal in the World?<\/h3> …… W0SYK 57

Build a Deluxe TTY Keyboard<\/h3> …… K7YGP\/7 63

Eyes for Your Shack<\/h3> …… W0ACR 74

Predicting Third Order Intermod<\/h3> …… WA2OKZ 95

Feedline Primer<\/h3> …… WA1SNG 103

Caught “Spying” by the Gestapo<\/h3> …… W1BNN 117

Why Tubes Haven’t Died<\/h3> …… WA5RON 125

Instant Circuits<\/h3> …… WB5DEP 133

K2OAW Synthesizer PROM-oted<\/h3> …… W7JSW 138

Computers are for Hams!<\/h3> …… WA1PAZ 145

The Unzapper<\/h3> …… WB5DEP 151

A $1.00 Strip Chart Recorder!<\/h3> …… W6NLB\/7 157

Display Yourself in a Big Way<\/h3> …… W4LLR 186

Fun City ‘s Surplus Scene<\/h3> …… Bach 191

Looking Back – Looking Ahead<\/h3> …… WA6ITF 199

Updating the Heathkit IB-1101<\/h3> …… WA5OKA 214
\n
\n

73 Ham Radio Today Issue January 1976<\/a>
<\/h2>\n

Clocks -really Simplified!<\/h3> …… WB2NEL 22

De-strain Your Ham-m<\/h3> …… K6BW 26

Hot Carbon<\/h3> …… W1BNN 28

An Automatic Dialer for the Deluxe Mobile<\/h3> …… WA4SAM 49

Zapping Dead Nicads to Life<\/h3> …… K20AW 62

Plugboard Extender for Under $3.00<\/h3> …… W3WTO 65

Eyes For Your Shack<\/h3> …… W0ACR 66

Build This Digital Capacity Meter<\/h3> …… Chladek 70

The Computer QSO Machine<\/h3> …… W1HAB 80

The Solder Master<\/h3> …… K6JM 92

Stack Your ICs -and Pot ‘Em<\/h3> …… W4CUG 94

Build This $5 Timer<\/h3> …… VE3FEZ 129

A $50 Self-powered Counter<\/h3> …… WA7SCB 130

How to Become a Troubleshooting Wizard<\/h3> …… K4IPV 138

Module Kits -a Low Cost Homebrewing Break through<\/h3> …… W1HCI 144

What’s All the Noise?<\/h3> …… W2DNY 154

Ham Quiz<\/h3> …… W5UOJ l56

Saving Ham Radio<\/h3> …… WA4BDW 162

Patching Tales<\/h3> …… WBHXR 166

Work a Novice<\/h3> …… W2OLU 171

Capacitors Unmasked<\/h3> …… K6HKB\/l 172

Why Fight It?<\/h3> …… WA0KKC 173

Greetings You Have Been Selected<\/h3> …… K0CBA 176

Save Money on Coax<\/h3> …… W8HXR 181

How to Pass Exams<\/h3> …… W8HXR 182

County Hunting<\/h3> …… W2SDU 192

99 Cent IC BFO<\/h3> …… WB5MJT 201

Empty State<\/h3> …… 202

The “Little Log” for 40 to 20m<\/h3> …… VE4GS 211

Using a Bargain Surplus Keyboard<\/h3> …… W6OXP 212

Improve Your SSTV with the FRAMER<\/h3> …… W2FJT 218

The Experimenter’ s Dream Card<\/h3> …… K9AIY 222

Run the Legal Limit with One Shoe<\/h3> …… WA7IEO 226

We Must Abandon Ship – Help!<\/h3> …… WB4SNC 230
\n
\n

73 Ham Radio Today Issue February 1976<\/a>
<\/h2>\n

Trekkies Build this Starfleet Communicator!<\/h3> …… WA3AJR 18

A Synthesized IC Frequency Standard<\/h3> …… Plavcan 22

You Can Make Photo PC Boards<\/h3> …… Harrington 30

Adding an Ammeter to Your Car<\/h3> …… WB5DEP 34

Really Soup Up Your 2m Receiver<\/h3> …… W9ZTK 40

How’s Your Speech Quality?<\/h3> …… Staff 44

A Transmission Line Matcher<\/h3> …… W5JJ 46

ASCII to Baudot Converter<\/h3> …… W6OXP 52

The Sound of Random Numbers<\/h3> …… WA1GSF 60

What Do You Want to Count?<\/h3> …… WA7SCB 66

RTTY Autocall -the Digital Way<\/h3> …… VE6BV 76

Believe Me -i’m No Expert!<\/h3> …… W2NSD\/1 86

Night DXing on 10 and 15<\/h3> …… WN2UGO 95

60 Hurts Per Second<\/h3> …… WA8GDW 98

Catch Big Ones – Fishpole Mobile<\/h3> …… W4RHZ 100

Glitchgate<\/h3> …… WA8WTE 102

Switch It Off First<\/h3> …… VK3IQ 108

Improving the FT-101<\/h3> …… K6ANG 112

Put Your SB-10 On 160m<\/h3> …… WA2ECI 121

WH6DBF -k1OXK -w6LZJ<\/h3> …… W6LZJ 124

Maintenance Musts<\/h3> …… WA6CPP 132

Alarm Foil Antennas<\/h3> …… WB2NEL 136

Alarm! Alarm! Alarm!<\/h3> …… WB4MYL 138
\n
\n

73 Ham Radio Today Issue March 1976<\/a>
<\/h2>\n

Adventure<\/h3> …… Bach 16

Tunable FM Receiver Strips<\/h3> …… WlSNN 24

Surplus Circuit Boards -a Gold Mine of Parts<\/h3> …… W0FEV 28

The Perils and Pleasures of Surplus Shopping<\/h3> …… Thompson 30

Space Age Junque<\/h3> …… W9CGI 34

A PC Board Bonanza<\/h3> …… WA4LZM\/w5SAY 38

Government Surplus: Is It All Gone?<\/h3> …… WN5NBE 40

Inherit the Wind<\/h3> …… W2AOO 44

Stereo -a New Type of CW Filter<\/h3> …… W8KZM 48

160m Solid State Receiver<\/h3> …… VK3ANY 52

Tubes Are Not Dead!<\/h3> …… WA6ITF 56

Put a Pin Hole in Your Cadillac’s Roof<\/h3> …… Staff 60

What’s A Computer?<\/h3> …… W1HCI 68

The IC See-er<\/h3> …… WB4FDQ 72

Build This Exciting New TVT<\/h3> …… K7YZZ 76

Magic Fingers for RTTY<\/h3> …… W9CGI 86

What’s That In Binary?<\/h3> …… W3KBM 92

The Smart Power Supply<\/h3> …… WA4SAM 96

Adrift Over Your C’s?<\/h3> …… G3OGR 106

How to Use Surplus Pots<\/h3> …… WB0NPN 108
\n
\n

73 Ham Radio Today Issue April 1976<\/a>
<\/h2>\n

Yes You Can Build This 2m Receiver!<\/h3> …… WA7SCB 18

A Reprogrammable ID<\/h3> …… WA3MSW 28

Put That AM Rig on FM<\/h3> …… WB6FVW 34

A Carrier Operated Relay (COR) for Your Receiver<\/h3> …… W7JSW 36

A $5 100 Watt Amplifier<\/h3> …… VE6OB 38

Build A 220 MHz Repeater<\/h3> …… WA1UFE 40

Carrier Indicator for Your Regency<\/h3> …… WA1SNI 42

Long Distance Call Eliminator<\/h3> …… W7JSW 44

Repeaters in Paradise<\/h3> …… W3EAG 48

Simple New TT Decoder<\/h3> …… W7JSW 52

One IC Tone Burster<\/h3> …… WB6ZUA 55

The Tuna-two Traveler<\/h3> …… WlRHN 56

The Mighty TR-22\/15<\/h3> …… WB4MYL 60

Inexpensive HF-vHF Frequency Standard<\/h3> …… WA5KPG WA5QZM 62

Computers Are Ridiculously Simple!<\/h3> …… Wadsworth 68

A Versatile TTY Generator<\/h3> …… WA6JMM 90

Chariots of the Hams?<\/h3> …… WB0FKZ 98

The PLL -exposed!<\/h3> …… WB2NEL 102

The Two-timer<\/h3> …… Deeds 106

How Accurate Is Your Counter -really?<\/h3> …… W6YUY 110

Gray Matters<\/h3> …… W9CGl 122

TR-22 Tips<\/h3> …… K9POX 126

A New Fashion in Hats for the Fun Mode?<\/h3> …… W8FJA 130

Copper Clad<\/h3> …… W6HGX 134

Bicentennial Seconds<\/h3> …… WA1DFL 136
\n
\n

73 Ham Radio Today Issue May 1976<\/a>
<\/h2>\n

The Magnificent Sevens Microhelix<\/h3> …… Jacoby 16

An All band Inverted Vee<\/h3> …… WA5FGC 22

Squaring the Conical<\/h3> …… Staff 24

Secret Antennas for Cliff Dwellers<\/h3> …… WA6PXY 26

The Novice Inverted Vee<\/h3> …… W8HXR 30

Closed Loop Antenna Tuning<\/h3> …… WA5KPG 32

The 75-80m Broadbander<\/h3> …… K2VGD 34

The Magic of a Matchmaker<\/h3> …… W1CEJ 38

How to Coax Your Antenna<\/h3> …… W6AGX 40

40m DXing – City Style<\/h3> …… K8ANG 42

The Secret 2m Mobile Antenna<\/h3> …… Staff 44

An Inverted Vee for 160\/80m<\/h3> …… K8ANG 46

The Dipole Dangler<\/h3> …… PY8ZAC\/w8VOH 48

Amateur Weather Satellite Reception<\/h3> …… W88DQT 52

Scan Your HR212<\/h3> …… K9EEH 66

Computer Languages – Simplified<\/h3> …… WB8TUR 70

Very Cheap I\/o – the Model 15<\/h3> …… Whipple W5CUD 77

Code Converter Using PROMs<\/h3> …… K7YZZ 84

A Nifty Cassette-computer System<\/h3> …… Staff 88

Is Digital All That New?<\/h3> …… WA9VFG 94

The Ins and Outs of TTL<\/h3> …… W1EWL 96

Build a CW Memory<\/h3> …… WA6VVL 102

AM is not Dead – It Never Existed at All<\/h3> …… WA1WDS 110

Is Extraterrestrial Communication Possible?<\/h3> …… K6BW 114

5\/8 Wave Power for Your HT<\/h3> …… W8KUT 118

Strobing: Gone in a flash only to return<\/h3> …… W9CGI 120

It Happened to Me<\/h3> …… WB2HJD 132

555 Timer Sweep Circuit for SSTV<\/h3> …… W8KZM 134

Tech Manuals<\/h3> …… K4ORT 140

RF and Mod Monitor<\/h3> …… K5JRN 142

A Failure to Communicate<\/h3> …… WB4YDX 143
\n
\n

73 Ham Radio Today Issue June 1976<\/a>
<\/h2>\n

Super COR<\/h3> – digital …of course! …… WA0BMP WB0JHS 16

Touchtone Decoder<\/h3> – using a calculator readout …… W2AOO 26

Simple Amateur TV Transmitter<\/h3> – at a QRP price …… WB4YTU\/wA9GVK 28

Amateur TV Receiving System<\/h3> – some of what you wanted to know …… WB4YTU\/wA9GVK 33

Glass Arm<\/h3> – the dreaded CW man’s disease …… Bach 38

Mobile Autodialer<\/h3> – six preprogrammed numbers …… WB9LTA 44

Autocall ’76<\/h3> – using a touch tone decoder …… WA6JMM 52

Build This Lab Type Bridge<\/h3> – and measure transformer impedances …… WB4FDQ 56

How Those Triangle Things Work<\/h3> – a sort of op amp handbook …… K7YGP\/7 60

Phone Patching ’76<\/h3> – automatic single frequency patch …… WA1RTD 67

Two Finger Arithmetic<\/h3> – how computers figure …… W1HCI 84

Those Exciting Memory Chips<\/h3> – RAMs ROMs PROMs etc …… Fowler 96

A Morse to RTTY Converter<\/h3> – using a microprocessor …… WB6SQU 106

Number Systems – a brief history<\/h3> …… W6PZV 112

ASCII \/baudot with a PROM<\/h3> – for ribbonless RTTY on computers …… W9LNY 114

Aim Your Beam Right<\/h3> – with a programmable calculator …… WB4GVE 122
\n
\n

73 Ham Radio Today Issue July 1976<\/a>
<\/h2>\n

Handy Dandy Soldering Iron Cooler Offer<\/h3> …… WB4FDQ 18

Perfect CW<\/h3> – drive ’em crazy with the Keycoder I …… WA9VGS 20

The Mini-mite All-band QRP Rig<\/h3> – runs a mighty seven Watts …… WA7SCB 30

A Fun Counter Project<\/h3> – an invaluable test instrument for under $50? …… Plavcan 36

Build a FAX from Scratch<\/h3> – then get satellite pictures and other things …… W4NK 44

Der Repeatermeister<\/h3> – repeater control with ID …… WA1UFE 58

Lightning and Thunder and Other Stuff<\/h3> – can J. Bach be a relative of P.D.Q. Bach? …… Bach 64

Behold the Giant Nixie Clock<\/h3> – using a minimum of new parts …… W4LLR 70

Creative SSTV Programming<\/h3> – how to put pizzazz into your show …… WB8DQT 76

Don’t Build This Project<\/h3> – watch for my next …… W8LWS 79

CW Regenerator\/processor<\/h3> – also has TTL output for digital work …… W6GXN 80

Dependable Timer<\/h3> – for darkroom repeater etc …… W1HCI 84

What’s Up on 156 MHz?<\/h3> – meet the marine world above 2m …… K3RXK 88

Oops ! There Goes the Power<\/h3> – keeping digital clocks going anyway …… W4CUG 92

TT Pad for the Wilson HT<\/h3> – and a belt clip mod too …… WA1LOU 94

Power Supply Testing<\/h3> – to save your digital circuits …… Tenny 112

A RTTY \/ Computer Display Unit<\/h3> – Baudot ASCII TTL RS232 etc. etc …… Roloff 118

Your Computer Can Talk Morse<\/h3> – even a computer can learn the code! …… Whitfield 133

Inexpensive Paper Tape System<\/h3> – using 5 level tape with computers …… Whipple W5CUD 145

Gain for Your HT<\/h3> – a half wave whip? …… K3VNR 149

The Super Transmatch<\/h3> – match almost anything! …… Staff 150

Simple VHF Monitor<\/h3> – converter for a transistor radio …… W6JTT 160
\n
\n

73 Ham Radio Today Issue August 1976<\/a>
<\/h2>\n

How Do You Use ICs?<\/h3> – fundamentals …… WA2SUT\/nNN0ZVB 24

Surprising Miniature Low Band Antenna<\/h3> – the DDRR low noise antenna (part I) …… Boyer 28

MINI-mOS – The Best Keyer Yet?<\/h3> – nothing Mickey Mouse about this one …… WA6EGY 38

The Skinflint’s Delight Breadboard<\/h3> – cheap imitation of a commercial IC DIP board …… K7YGP\/7 52

More PLL Magic<\/h3> – like low frequencies for RTTY …… W9ZTK 56

The Logic Grabber<\/h3> – selected interval logic tracer (S.I.L.T.) …… WA3TCO 60

Global Calculations for the DXer<\/h3> – using a hand calculator …… W2IAT 68

Instant Counter Calibration<\/h3> – using your TV set …… K9POX 70

Super Simple 450 MHz Rig<\/h3> – go ATV with a $42.50 module …… WB4YTU\/wA9GVK 72

The First Computer-controlled Ham Station<\/h3> – Grand Prize winner at the WACC! …… WA8VNP 82

The Which Chip Dilemma!<\/h3> – 4 8 12 or 16 bits: pros and cons …… Pittman 90

Meaningful Conversations with your Computer<\/h3> – what those mysterious “languages” are all about …… WB2ZCF 98

A Baudot Monitor \/editor System program<\/h3> – listing for the 8080 …… Whipple W5CUD 102

A Logic Probe You Can Hear<\/h3> – good not only for the blind …… WA6HWJ 106

How Computer Arithmetic Works<\/h3> – do-it-your self experiments …… W1HCI 108

Satellite Orbit Predicting<\/h3> – using a pocket calculator …… W1ODI 113

The Death of Negative (IBM) Logic<\/h3> – some fundamentals of logic design …… W6KYP 116

And on the Other Side<\/h3> – binary and octalization of decimals …… W3KBM 120

Build the Safari RTTY Terminal<\/h3> – an active filter modem from Africa …… DL2SX\/ZS6GG ZS6JR 122

Never Underestimate the NAND<\/h3> – introducing the 7400 quad NAND gate …… WB0JHS 128

EI Cheapo Signal Tracer<\/h3> – test gear for the cheapskate …… WB8EQQ 148

FSK with the SB-401<\/h3> – simple way to get on RTTY …… WA3AJR 150
\n
\n

73 Ham Radio Today Issue September 1976<\/a>
<\/h2>\n

Balloon to Balloon!<\/h3> – another 73 first …… W2NSD\/1 20

The Surprising DORA Low Noise Antenna<\/h3> – part II …… Boyer 34

Ultrasimple Regulation with New IC<\/h3> – power supply design greatly simplified …… WB0JLS 48

Can An Indoor Antenna Work?<\/h3> – making the best of a bad bargain …… Staff 56

12 Inexpensive Volts for Your Base Station<\/h3> – parts right out of your local Radio Shack …… WA8WVF 60

A Test Lab Bonanza<\/h3> – using a transistor radio …… WA7SCB 64

Protect Your VHF Converter<\/h3> – with a novel antenna relay …… WB2NTP 68

Ridiculously Simple RTTY System<\/h3> – get on the air in one day …… W3KBM 70

How to Catch a CBer<\/h3> – practical hints …… Fields 74

A 450 MHz Transceiver for Under $130<\/h3> – bringing 450 within everyone’s reach …… W1HCI K1ELT 80

Space Age Junque II<\/h3> – updating the 348 by 30 years …… W9CGI 84

PROM Memory Revisited<\/h3> – getting back to May’s CW blockbuster …… WA6VVL 92

What’s When<\/h3> – timing diagrams …… Craig 104

Eight Trace Scope Adapter<\/h3> – test accessory for digital timing …… Johnson 108

The PROM Zapper<\/h3> – build this simple PROM programmer …… WA1UFE 112

Sneaky Baudot<\/h3> – with an ASCII keyboard! …… W3KBM 115

Simple Graphics Terminal<\/h3> – using inexpensive surplus equipment …… K1MRK Ciarcia 116

Counters Are Not Magic<\/h3> – They’re Simple – getting right down to basics …… WB2NEL 126
\n
\n

73 Ham Radio Today Issue October 1976<\/a>
<\/h2>\n

Build a Weird 2 Band Mobile Antenna<\/h3> – fantastic parking lot car locater …… W6AAQ 20

Build a Counter for Your Receiver<\/h3> – updating receiver fun …… WA3YGJ 28

How Do You Use ICs?<\/h3> – part II …… WA2SUT\/nNN0ZVB 38

QRP Fun on 40 and 80<\/h3> – have a real ball with just 5 Watts! …… K5JRN 44

The Hybrid Quad<\/h3> – has low windload expense hassle …… WB8VCS 48

Frequency Detector for Your Counter<\/h3> – sounds alarm when set frequency occurs …… W2AOO 50

Programmable CW ID Unit<\/h3> – for RTTY repeaters mobile etc …… WA6JMM 52

New IC for the Counter Culture<\/h3> – simpler counters with less used power …… W4CUG 54

Is My Rig Working or Not?<\/h3> – build an effective radiated field meter and know! …… K8VIR 56

Quickie Collinears for 15 and 10<\/h3> – satisfaction guaranteed …… K8ANG 58

500 MHz Scaler<\/h3> – PC boards are available …… K2OAW 62

Build a Super Standard<\/h3> – goes right down to 1 Hz …… WA7VVC 66

The Incredible Lambda Diode<\/h3> – you can even make it yourself! …… WB5DEP 70

Mechanical RTTY Buffer<\/h3> – using a tape punch and a clock …… K5UAR 74

Have You Used a Triac Yet?<\/h3> – nifty solid state ac relay gadget …… WB9JSE 76

Another CW Keyboard Keyer<\/h3> – CMOSed for ultra low power consumption …… WA9VGS 78

RTTY\/uP Flexibility<\/h3> – Baudot \/ ASCII serial\/parallel I\/o …… Roloff 96

Blowtorch Your ICs<\/h3> – a bonus from computer surplus …… VE3FEZ 101

How to Interface a Clock Chip<\/h3> – Baudot BCD or ASCII conversion …… G8KWR\/dC0GK 102

Hey Look What My Daddy Built!<\/h3> – six TV game chip can make you a hero …… Ciarcia 104

A TTL Tester<\/h3> – great for unmarked bargain ICs …… WA9VFG 110

How to Check Memory Boards<\/h3> – use this simple program …… VE3DWC 114

The New Ham Programmer<\/h3> – making those confounded uPs work …… W2HBY 118

The Soft Art of Programming<\/h3> – getting started with BASIC …… Didday 124

BASIC? What’s That?<\/h3> – the basics of BASIC …… WA1GFJ 128

Is It the Band or My Receiver?<\/h3> – the microvolter will tell! …… Staff 132
\n
\n

73 Ham Radio Today Issue November 1976<\/a>
<\/h2>\n

Cordless Iron Tips<\/h3> – when you’re up against the Wahl …… K9POX 26

Bicycle Mobile<\/h3> – cover feature …… WB4SNC 30

Build a Simple “Lab” Scope<\/h3> – costs less than $70! …… K8JWR 32

Get on Six with Surplus<\/h3> – the el cheapo RT-70 is a natural …… WA5HLE 40

The Beam Saver<\/h3> – rotor memory system …… W6YUY 46

Updated Universal Frequency Generator<\/h3> – extremely versatile test unit …… K3EZ 50

Who me? A Pioneer?<\/h3> – some fantastic frontiers are wide open …… W5WGF 54

The Shirt Pocket Touchtone<\/h3> – auto-patch from your HT or car …… K4TWJ 58

Put Your Name in Lights<\/h3> – giant nixie message display …… W4LLR 60

Liquid Crystal Display Guide<\/h3> – for low low low power consumption …… WB5DEP 62

Self-powered Mi ke Preamp<\/h3> – when you need to SPEAK UP …… WA5KPG 65

See the World and Get Paid!<\/h3> – merchant marine radio officers: part I …… Hargett 75

The Wind Counter<\/h3> – the digital wind sock …… W9CGI 84

The S38 Is Not Dead!<\/h3> – a tale of resurrection …… W6GXN 88

ID with a PROM<\/h3> – and program it yourself …… W7JSN 90

The Amazing Inverted L<\/h3> – antenna for 20 40 and 80m …… K8ANG 94

Battery Chargers Exposed<\/h3> – more than you probably wanted to know …… W6GXN 98

How Do You Use ICs?<\/h3> – part III …… WA2SUT\/nNN0ZVB 106

Thirty Years of Ham RTTY<\/h3> – from the Model 12 to the microprocessor …… W2NSD\/l 110

Big Noise Burglar Alarm<\/h3> – lights flashing horns blaring …… WA3SWS 114

Dandy Digital Dial Decoder<\/h3> – to control whatever you want …… W9CGI 116

Weather Satellite Display Control<\/h3> – integrating CRT and FAX displays …… WB8DQT 122

Ham Time-sharing is Here for You!<\/h3> – via a repeater …… WB4YTU\/ WA9GVK 134

The Soft Art of Programming<\/h3> – part II …… Didday 140

OSCAR Orbits on Your Altair<\/h3> – the software you’ve needed …… G3ZCZ 146

ASCII \/baudot Converter for Your TVT<\/h3> – series or parallel to boot …… Roloff 150

The Smoke Tester<\/h3> – power supply checker outer …… W7RXV 159

The Coffee Flipper<\/h3> – and executive decision maker …… WA3VXH 162

The Man Who Invented AC<\/h3> – Tesla the greatest pioneer of them all! …… Goldman 164

Baudot to ASCII<\/h3> – you want to learn programming? …… Borgerson 172

Baudot and BASIC<\/h3> – an interpreter for a Baudot computer …… W5CUD Whipple 174

Toward a More Perfect Touchtone Decoder<\/h3> – Ma’s system can be made to work well …… WA3VXH 178

Using a Wireless Broadcaster<\/h3> – two good ham uses …… WA9VGS 184

The Quiet Spy<\/h3> – amateur uncovers spy ring in U.S.! …… Matlack 188

The Benefits of Sidetone Monitoring<\/h3> – and how to do it …… Staff 191

Paolo<\/h3> …… W7IDF 258
\n
\n

73 Ham Radio Today Issue December 1976<\/a>
<\/h2>\n

Go Tone for Ten<\/h3> – simple subaudible encoder …… WB6GON 22

World’s Simplest Five-band Receiver?<\/h3> – using an AM transistor radio …… K3QKO 28

How Do You Use ICs?<\/h3> – part IV …… WA2SUT\/nNN0ZVB 36

Hamming 101<\/h3> – another Cabrillo College pioneering program …… Inman 40

A Super Cheapo CW IDer<\/h3> – for FM repeaters and RTTY …… K4EEU 46

The ZF Special Antenna<\/h3> – double-d “beam” …… ZF1MA 51

CT7001 Clockbuster<\/h3> – the ultimate clock \/ calendar (for now) …… WB5DEP 52

Saving a CBer<\/h3> – a new resource for hams …… WA2KBZ\/jY9KS 62

A Ham’ s Computer<\/h3> – CW\/rTTY the easy way …… K7YZZ 78

What’s All This LSI Bunk?<\/h3> – an ostrich’s eye view of the microprocessor …… Leventhal 84

The Soft Art of Programming<\/h3> – part III …… Didday 92

Getting By the Friden-8800 Communications Gap<\/h3> – interface made easy …… VE3DWC 100

New Improved Repeater Monitor<\/h3> – 2 transistors …… WA5RON 106

Put Snap in Your SSTV Pictures<\/h3> – using a $20 freq standard …… W2FJT 112

What’ s All This Wire-wrap Stuff?<\/h3> – talk about cold solder joints! …… K2STV 116

Exploding the Power Myth<\/h3> – to set the record straight …… W9IK\/XE1ZX 120

Exploding the SWR Myth<\/h3> – to set the record straighter …… G3OGR 122

Bring a Dead Band to Life<\/h3> – beacon CQer …… WB8BEL 125

The IC-22 Walkie<\/h3> – portabilization with nicads …… WA1UQC 126

The Latest in Counters<\/h3> – an inexpensive modularized 50 MHz system …… WA1UFE\/8 140

The 5 Minute COR<\/h3> – simplest yet? …… WA3SWS 152

See the World and Get Paid!<\/h3> – part II …… Hargett 154

Watch DX with a Spectrum Analyzer<\/h3> – seeing is believing …… Dewey 162

DXing with a Weather Map<\/h3> – a new 6m DX technique …… W9CGI 166
\n
\n

73 Ham Radio Today Issue Holiday 1976<\/a>
<\/h2>\n

Build This Inexpensive 400 Watt Amplifier<\/h3> – a pair of shoes never hurts …… W7SCD 22

How Do You Use ICs?<\/h3> – part V …… WA2SUT\/nNN0ZVB 24

Mobile Smokey Detector<\/h3> – 10.5 GHz: – use it or lose it …… W1SNN 32

Get a Kid Off the Streets<\/h3> – and into ham radio …… WA1GFJ 35

Add RIT to Your Transceiver<\/h3> – a must for CW operators …… Staff 36

Coronaries for Burglars<\/h3> – with this cheapo car alarm …… WB6QDS 38

Power Supply<\/h3> – versatile …… WB4EHG 40

DXpedition: Memories for a Lifetime<\/h3> – reflections of HK1TL …… K3JJZ 44

Secret PC Layout Method<\/h3> – simple and inexpensive artwork …… WA9VFG 46

Design Your Own QRP Dummy Load<\/h3> – useful beginner’s project …… WA1SNG

Failsafe Super Charger<\/h3> – multi-rate too! …… WA3KKM 49

The Amazing 18″ Antenna for 160m<\/h3> – get on topband simply …… W2NYU\/wA1JJV 52

A Great Way to Lay Out PC Boards<\/h3> – new use for shirt cardboards …… WB4TTY 53

Replacing the Knife Switch<\/h3> – simple TR system for the Novice …… WA1SNG 54

$25 for a Connector? You’re Crazy!<\/h3> – do-it-yourself 7\/8″ coax connectors …… W9DOR 56

Now You Can Synthesize<\/h3> – the VHF Engineering approach to 2m happiness …… WB8STQ 58

IC Audio Frequency Meter<\/h3> – another use for the 555 …… WA5KPG 61

Hutchinson’s Remedy<\/h3> – the chirpless CW machine …… VE3CWY 62

The Mod Squad Does the Pocket Scanner<\/h3> – Radio Shack PRO-4 updated …… WB0KZV 66

TR-22 Mod Squad<\/h3> – king of the modifieds? …… WA2AJO 69

What Computers Can and Can’t Do<\/h3> – a look at amateur radio’s future possibilities …… WB6OBS 80

A Ham Shack File Handler<\/h3> – program in BASIC for QSLs repeaters etc …… W4BO 82

Print Your Own Log Book<\/h3> – on your nearest computer …… W0TBL 84

The Bit Explosion<\/h3> – 8 vs. 12 vs. 16 vs.? …… WB2GFE 86

Backward Branch<\/h3> – the Easy Way for the 6800 …… Hunter 90

Superprobe<\/h3> – modern replacement for the scope …… WA6JMM 92

The Frumious Hexadecimal<\/h3> – for 16-fingered folk …… W3KBM 94

V-v-v LF Generator<\/h3> – the lowdown …… Hileman 97

Shoeing Your HT<\/h3> – semi-ideal mobile setup …… WB5HSK 100

$22 for a Regulator? Never!<\/h3> – a simple car voltage regulator …… WB9JSE 103

Cash In on the CB<\/h3> – installation for fun and profit …… WA4WOC 104

Surplus Headset Mod<\/h3> – no tanks needed …… K2EE 107

Am I Really Transmitting?<\/h3> – red and green LEDs for the TR-22 …… WB8IMY 108

Dear Gabby<\/h3> – exasperation explained …… W7IDF 109

The Smart Charger<\/h3> – auto shutoff and all that …… WA5KPG 110

Simple Remote Ammeter<\/h3> – using a bus-bar shunt …… W7RXV 111

Micrometers for Microwaves<\/h3> – the art of delicate measurement …… Kehl 112

Tuning Those Big Antenna Coils<\/h3> – permeability …… W6AGX 127

The 2m Mod Squad Tackles the Weatherradio<\/h3> – and wins! …… W2OSW\/w2UJR 128

Design Your Own PC Boards<\/h3> – the styrofoam solution …… Adsit 130

Hamming by Laser<\/h3> – modulating them isn’t easy …… WA7NMO 134

A 60 Foot Antenna on a 20 Foot Lot<\/h3> – solving a 40m Novice problem Collector and Emitter …… Staff 138

Dual Voltage Power Supply<\/h3> – about as simple as they come …… W6WQC 146

Kints and Hinks<\/h3> – for money savers …… VE3FEZ 147

An Autopatch Busy Signal<\/h3> – when the phone’s already in use …… WA1RTD 148

Catch Standing Waves<\/h3> – with a tunable trap …… W6AGX 151

Inside the GLB<\/h3> – a gutsy look at a synthesizer …… WA6CPP 154

Three for Two<\/h3> – antenna forum …… K4TWJ 160

How to Bug an Automatic Keyer<\/h3> – putting new life in an old bug …… WB9BNF 162

A 450 Duplexer<\/h3> – that fits in your car! …… W7JSW 164

Turn Signal Reminder<\/h3> – setting things straight …… K5AR\/7 166

Do-it-Yourself Ceramics<\/h3> – for tube sockets insulators etc …… WA9VFG 168

Tubes …?<\/h3> – VFO project for nostalgia buffs …… W5JJ 172

The Hellbox All-purpose Keyer<\/h3> – keys mutes T\/r …the works …… W5JJ 192

Will Silver-Zinc Replace the Nicad?<\/h3> – portable power with a punch …… W6JTT 204
\n
\n

73 Ham Radio Today Issue January 1977<\/a>
<\/h2>\n

SSTV Test Generator<\/h3> – invaluable diagnostic tool …… WA6VVL 22

How Does Your Rig Perform?<\/h3> – an example using the HW-1 …… W6AGX 28

Art and the PC Board<\/h3> – new uses for copperclad boards …… W7RXV 32

The “New” 88 Channel IC-22v<\/h3> – add two switches and flip …… WA6OAZ 36

A No Hands Telephone Dialer<\/h3> – mobile accessory using a ROM …… WA1PNG 40

What’s the Best Antenna for 160?<\/h3> – the inverted vee compromise …… W5USM 44

Ten Meters: Dead or Alive?<\/h3> – a user’s report …… K2HTO 48

200 lb. Cookie<\/h3> – microwave repeater control …… WA6ITF 57

Weather Satellite Simulator<\/h3> – do-it-yourself satellite? …… W9CGI 58

An Automatic Thermostat<\/h3> – saves 10% on your fuel bill …… W1HCI 62

Mod for the Heath IO-102 Scope<\/h3> – faster warm-up …… WB4MYL 65

The UFO Connection<\/h3> – that was somebody fooling around wasn’t it? …… K8NQN 68

Go Forth and Multiply!<\/h3> – the space age approach …… W1HCI 76

How to Find a Forgetful Memory<\/h3> – diagnostics for a thoughtless computer …… VE3DWC 80

A Super Log<\/h3> – a program for the ham shack computer …… WA7SCB 83

Short On Memory?<\/h3> – build this 2K board for your 6800 …… WB2ZCF 90

A Software Replacement for the Muffin Fan<\/h3> – IC cooling program …… WA1FEF 96

1 000 WPM Morse Code Typer<\/h3> – for the bionic brass pounder …… WB2DFA 100

It Works! The First Time!<\/h3> – the Seals Electronics memory board …… WB4WRH 104

The New Improved TT Decoder Updated<\/h3> – better …… W7JSW 107

The Polarity Changers<\/h3> – plus to minus …… Staff 108

Repeaters in New Zealand<\/h3> – quite a few …… ZL2AMJ 110

A VFO for Sidebanders<\/h3> – 5-5.5 MHz …… VK3XU 116

Practical Solar Cell Power<\/h3> – great for remote repeaters …… W2EUP 118

A Simple RC Substitution Box<\/h3> – using a matrix …… Staff 120

The Compactron Audio Driver<\/h3> – three tubes in one …… WA5SWD 122

The Junk Box as an Art Form<\/h3> – new use for blown capacitors …… W8GI 126

The Mod Squad Goes 220<\/h3> – pub serv receiver for pocket 220 …… WA6JMM 128

Double Sideband: Something New?<\/h3> – one for voice one for SSTV …… K7YZZ 130

Carbonize Your Crystal<\/h3> – a return to the carbon mike …… WB6MXD 134

How Does Sideband Really Stack Up?<\/h3> – the SSB solution? …… WB6JNN 136

Son of the Overload Relay<\/h3> – if you can’t buy ’em build ’em! …… W2OLU 140

No-wire Antenna Switch<\/h3> – a clever remote system …… WA0NUX 142

The Beeper<\/h3> – NASA-type beeping …… WB8VQD WB8MHG\/3 144

Ham Phone Answering Service<\/h3> – leave messages …… W6GUU 148

Dear Good Buddy<\/h3> – the perils of radio …… W7IDF 152

SWR Myth Exploded Again<\/h3> – how does swr really affect signal strength? …… WA1JFU 156

Dirt Cheap Regulation<\/h3> – virtually freebee …… W3GAT\/2 158

A Vest Pocket QRP Rig<\/h3> – if you have a big one …… K5JRN 160

Where You Can’t Solder or Weld<\/h3> – joining dissimilar metals. …… WA4VWY 162

Exciting New Touchtone IC<\/h3> – make phone calls with your HT …… WA0CKG 164

Revisiting the COR<\/h3> – improvements on the April 76 model …… W7JSW 166

The Mighty Magnet Mount Antenna<\/h3> – the price is right: zilch …… WA1PDY 168

A 15.75 kHz Oscillator<\/h3> – simple TV test unit …… XE1CMB 170

Behavior Mod for the HM-l02<\/h3> – pretty simple …… W3VT 172

Antenna Magic<\/h3> – good advice on antenna fundamentals …… WB0HAF 174

See Yourself Talk<\/h3> – build a sideband monitor scope …… VK5YH 178

The Hidden Charger<\/h3> – simplest charger yet …… WB8IMY 180

IC Compressor-expander<\/h3> – why go only halfway? …… Staff 182

Measure Your Wasted Power<\/h3> – how much are you losing in your feedline? …… Staff 184
\n
\n

73 Ham Radio Today Issue February 1977<\/a>
<\/h2>\n

Give That Professional Look to Your Home Brew Equipment<\/h3> – win prizes …… McClellan 28

You Already Have an Atomic Frequency Standard<\/h3> – here’s how to use it …… WD8ASL 32

Give The Hamburglar Heart Failure<\/h3> – car alarm system …… WA5KPG 36

Contest Special Keyer<\/h3> – has short but adequate memory …… WA2KUO 38

The Chintzy 12<\/h3> – a junk box wonder …… W1OOP 40

You Can Sound Better With Speech Pre-emphasis<\/h3> – a simple circuit which will work wonders …… Staff 42

Are You Really Insured?<\/h3> – time to read the fine print …… W9KXJ 44

Getting a Patent -is It Really Worthwhile?<\/h3> – how to do it if you really want to …… W2WLR 46

Keeping The Wind Down<\/h3> – timer for your mobile rig …… WB8AZP 50

SSB: The Third Method<\/h3> – bet you can’t even name the first two …… WB0JXY\/0 52

The TTL One Shot<\/h3> – another digital building block …… WB8YJE 56

DVMs Get Simpler and Simpler<\/h3> – wait’ll you see the MC-1405! …… McClellan 60

Instant PC Boards using new Color<\/h3> – Key technique …… Minchow 64

72 Computerized Satellite Tracking<\/h3> – the needed software …… WB0JHS 72

Building The Polymorphics Video Board<\/h3> – the voice of experience …… WB6JKM 78

RTTY Goes Modern<\/h3> – using microprocessors …… WB6QFA 82

How to Use Those Old Teletypes<\/h3> – computer operation with a 60 mA machine …… K7YZZ 88

Drive More Safely with a Mobile Dialer<\/h3> – hold 4 or 8 phone numbers in a PROM …… W7JSW 102

Talk About DX WOW!<\/h3> – you just never know …… W7IDF 112

An Automatic Be Squelch<\/h3> – another use for your 2m Squelch …… Minchow 114

Tune Up a Random Wire<\/h3> – world’s simplest antenna for 80-15 …… VK6DX\/vK6ZEH 124
\n
\n

73 Ham Radio Today Issue March 1977<\/a>
<\/h2>\n

Pitcairn Island<\/h3> …… VR6TC 28

How Do You Use ICs? – Part VI<\/h3> …… WA2SUT\/nNN0ZVB 36

Low Voltage Power Supply<\/h3> …… VE3CWY 38

QLF? Not With the Great Lakes Sideswiper!<\/h3> …… W6VX 44

The Capacitor Comparator<\/h3> …… WB4MYL 49

Logical Storage for Logic<\/h3> …… Stanfield 50

CB Can Do Some Things Better<\/h3> …… Norman 56

A New Breed of Voltage Regulators<\/h3> …… WA7ABV 62

High-quality Video Display<\/h3> …… WABVNP 72

Save Time with a Micro OS<\/h3> …… Ferguson Ferguson 90

PROM Message Generator for RTTY<\/h3> …… WB4EHG 94

FCC Approved Microprocessor<\/h3> …… K8NQN 100

How Counter ICs Work<\/h3> …… WB5IRY 106

Inexpensive Variable DC Supply<\/h3> …… W9VZR 110

The History of Ham Radio -part 1<\/h3> …… W9CI 112

Remember the Windom<\/h3> …… W8HXR 118

The Agonies of Tower Raising<\/h3> ……WA2CGA 126

The Speedy Audio Counter<\/h3> …… W4JYW 130

Versatility Plus for the HW-202<\/h3> …… W1JLI 132

The Boomless Microbeam<\/h3> …… Staff 134

Making Your Own PC Boards -part I<\/h3> …… Smith 136

Announcing the PCF<\/h3> …… WA6PTM 148

The Happy Flyers<\/h3> …… WB6CQW 164

10 and 11 Meter Predictions<\/h3> …… Nelson 168
\n
\n

73 Ham Radio Today Issue April 1977<\/a>
<\/h2>\n

Shoot the Moon!<\/h3> …… K3BPP 44

Frustrating The Thieves<\/h3> …… WB0GGT 46

Automatic Autopatch Release<\/h3> …… WA1RTD 52

Emergency 911 System<\/h3> …… WA2RXQ 54

The Downspout Vertical<\/h3> …… K8ANG 55

RTTY? What’s That?<\/h3> …… WA6CPP\/wA7PEI 56

Do-it-Yourself Photosensitizing<\/h3> …… KL7AE 57

Making Your Own PC Boards -part II<\/h3> …… Smith 58

Curing Mobile Noise Miseries<\/h3> …… G3BID 64

An Intelligent RTTY Station<\/h3> …… K7YZZ 72

Interrupts Explained!<\/h3> …… ZL1TRM 76

CW for the 6800<\/h3> …… WA4TMZ 80

The Super Clock<\/h3> …… WA1UFE 86

Add Class to Your Mobile<\/h3> …… WB8HEE 90

The Final Feeder<\/h3> …… WA9OZC 91

What About Surplus Nicads?<\/h3> …… W9JTQ 92

The History of Ham Radio -part II<\/h3> …… W9CI 96

Wind Your Own<\/h3> …… K8VIR 100

Discriminator Output for the HR-2A<\/h3> …… W2KPE 101

The Phantom Exposed<\/h3> …… Bach 102

Retire to Ham Heaven<\/h3> …… K0WTM\/oA6CV 106

Hamming the Buggy Sweepstakes<\/h3> …… WA2UDS 114

Taming the Wild Beta<\/h3> …… W3KBM 118

A Combiner for Your 2m Whip<\/h3> …… ZL2AMJ 119

Tile Carbon Marvel<\/h3> …… W1SNN 120

The Minicom Receiver<\/h3> …… K4DHC 136

Those Illegal CB Channels<\/h3> …… K8ANG 150

The Real Truth About SWR<\/h3> …… WB5IAM 155

Improving the Dipole<\/h3> …… Staff 156

The 60 WPM Conversion<\/h3> …… WB2MPZ 158

Digital Autopatch<\/h3> …… W4VGZ 166

Harness the Wind<\/h3> …… WA1LET 173
\n
\n

73 Ham Radio Today Issue May 1977<\/a>
<\/h2>\n

Build the World’s Simplest Keyer<\/h3> – uses 555 timers …… Ring 46

Stop That Autostart<\/h3> – mods for the ST-6 circuit …… WA5EVH 47

Predict the Weather!<\/h3> – a complete satellite receiver …… WB8DQT 48

Learn A New Language<\/h3> – try CW …… WB0KTH 52

The History of Ham Radio<\/h3> – part III …… W9CI 54

The Oily Resistor Watteter<\/h3> – how to put 20 W into a 1 W resistor …… WA1PDY 57

SSTV Slalom Game<\/h3> – you don’t need a sports car …… K4TWJ 58

Computer-controlled Thermometer<\/h3> – take OSCAR’s temp with a micro …… WB9LSS 66

Computerized RTTY Takeover!<\/h3> – Digital Group cassette to TU conversion …… K7YZZ 70

Let BASIC Control Your Next Contest!<\/h3> – with Extended Tiny BASIC language …… Whipple 76

Satellite Zapper<\/h3> – effective antenna for weather birds …… WB8DQT 82

VHF Noise Snooper<\/h3> – track down annoying pulses …… WA6CLZ 84

Understand Your Pet Rock<\/h3> – tips on crystal oscillators …… K1CLL 86

TTL Techniques<\/h3> – bypass those glitches …… WB5IRY 89

Sending HI<\/h3> – on the hooter …… W8LWS 90

Build a DDRR for Your Mobile<\/h3> – this one won’t blow off …… W5UKL\/0 92

Headphone Jack Adapter<\/h3> …… WA0VHX 94

Automatic Taping Unit<\/h3> – for repeaters logging etc …… ZL2AMJ 98

Let’s Use English<\/h3> – for a change …… WA1GFJ 99

The Ham Radio Classroom<\/h3> – sure beats study hall …… W4LLR 100

CB to 10 -a Legal Alternative<\/h3> – part I: bandplan and crystal info …… W4NVH 106

Save Your Old Speakers<\/h3> – how to remove the beehive …… Miller 109

Beware the Compressor!<\/h3> – some pitfalls to avoid …… WB5QGI 110

Matching Output Transformers<\/h3> – sort out unknown impedance taps. …… Miller 111

Stop Timeout!<\/h3> – build this 10 minute ID timer …… K3VTQ 112

Have You Tried Television?<\/h3> – it’s easier than you think …… WB4KTY 116

Quick Vertical<\/h3> – for 20 and 40 …… WB0KTH 117

Try Power Saver Logic<\/h3> – a guide to CMOS applications …… WB5DEP 118

HF Bands Expander!<\/h3> – eliminate splatter to gain operating room …… Staff 126

Fight Inflation! Build It Yourself!<\/h3> – tips on planning construction projects …… W3KBM 144

Wilson HT Mods<\/h3> – heavy duty p.s. required …… K4MKX 148

Try These IC-230 Mods<\/h3> – improving a popular transceiver …… WB6GTM 152

CB to 10 -a Legal Alternative<\/h3> – part II: conversion data …… W6RCL 162

All-electronic SELCAL<\/h3> – uses a UART for versatility …… WB2MPZ 166
\n
\n

73 Ham Radio Today Issue June 1977<\/a>
<\/h2>\n

Two Meter Scanner<\/h3> – for the IC-230 …… K3JML 46

Try the Mini-timer<\/h3> – prevents HT timeouts …… WA2UMY 48

High Frequency Utility Converter<\/h3> – handy test rig for any shack …… K4DHC 50

RTTY Scratchpad Memory<\/h3> – after this try a UART …… VE3GSP 54

Build This CW Filter<\/h3> – darned good …… VE3EXA 55

The London Bus Tuner<\/h3> – effective for short antennas …… Staff 56

The W1BB Story<\/h3> – a visit with the king of 160 …… WB1ASL 58

Ten Watts on 2<\/h3> – it’s possible with this rock crusher! …… WA6NCX\/1 64

UHF SWR Indicator<\/h3> – 1296 anyone? …… W8DMR 68

At Last! A 10m Band Plan<\/h3> – requires a CB radio …… WA4MFT 71

Event Timer With Memory<\/h3> – double check gravitational laws …… WA3VPZ 72

Sheet Metal Brake<\/h3> – build microwave components …… W6QIR 76

The Easy Ammeter<\/h3> – current news …… VE3FEZ 78

Try a Conduit Vertical<\/h3> – low angles are great for DX …… WB9DVV 80

The IC-pC Connection<\/h3> – convenient and cheap …… WA6OAA 81

An 82523 PROM Programmer!<\/h3> – now build those projects using one! …… WB2CZL 82

Practical PS. Design<\/h3> – do it right this time …… WA6JMM 84

Yaesu FRG-7 Impressions<\/h3> – take note swl fans! …… W5JJ 96

SSTV Meets the SWTP 6800<\/h3> – modulate video with a micro …… K6AEP 98

Aim Your Antenna With a Micro<\/h3> – beam heading BASIC program …… W4PWF WA2TMT\/4 108

Regulated Nicad Charger<\/h3> – don’t cook ’em! …… K7HKL 117

Complete Repeater Control System<\/h3> – all that’s missing is the computer …… W4VGZ 118

Transmission Line Primer<\/h3> – in case you don’t know everything …… Murphy 124

Things Remembered<\/h3> – ever heard of an 807? ……W8LUX 126

Digital Bargain Hunting<\/h3> – tips on surplus computer goodies …… W8KBC 148

More Channels for the IC-22S<\/h3> – using dip switches …… WA4VAF 152

Try a Scandie-talkie<\/h3> – build a scanning HT …… WA6NCX\/1 156

Current-saver Counter Display<\/h3> – multiplex those LED’s! …… K7YGP 174

Instant QSO Recall System<\/h3> – gaining peer respect …… W4GKF 177

New PC Techniques Unveiled!<\/h3> – dig out your old chemicals …… WB5DEP 178

How Do You Use ICs?<\/h3> – part VII …… WA2SUT\/nNN0ZVB 184

Uncle Sam’s Surplus List<\/h3> – and how to get on it …… 192
\n
\n

73 Ham Radio Today Issue July 1977<\/a>
<\/h2>\n

Motorcycle Mobile<\/h3> …… WA4LWY 40

Inside the Bird<\/h3> …… W6YUY 44

Introducing Autotrak!<\/h3> …… W9CGI 46

A Battery Voltage Monitor<\/h3> …… Hawkinson 52

The Morse Clock<\/h3> …… WA1MXV 54

Hunting Noise<\/h3> …… W6RVP 58

CMOS Oscillators<\/h3> …… WB5DEP 60

A Dial for the FM-dX<\/h3> …… W2PQG 63

Robot 400 Scan Converter Details<\/h3> …… WB8DQT 64

Bounceless TT Decoder<\/h3> …… WA5ACA 71

Hams Profit From CB<\/h3> …… Norman 72

Patch Up Your 101<\/h3> …… K7VUA 76

The History of Ham Radio -part IV<\/h3> …… W9CI 78

Dipole Designer Program<\/h3> …… K7SBK 82

Software Control<\/h3> …… WA8VNP 88

QSL Tips<\/h3> …… Barrack 97

CB to 10 -part III<\/h3> …… VE7CHI 98

CB to 10 -part IV<\/h3> …… WB4EQU Norman 101

CB to 10 -part V<\/h3> …… K5UKH 104

World’s Smallest Continuity Tester<\/h3> …… Miller 105

Open New Frontiers!<\/h3> …… WB6JNN 118

Digital Synthesizer<\/h3> …… W9CGI 124

Selecting a Frequency Counter<\/h3> …… McClellan 128

Build A Multiplying Prescaler<\/h3> …… K3JE\/2 132

Phone Patch Tips<\/h3> …… WB6MXD 138

Impedance Matching<\/h3> …… WB5HEQ 140

Digital Clock Fail-safe<\/h3> …… WB6HJQ 168

Interest in Mail Order?<\/h3> …… Anderton 170
\n
\n

73 Ham Radio Today Issue August 1977<\/a>
<\/h2>\n

Dual Rhombic for VHF-uHF<\/h3> …… W8DMR 24

Microwave Waveguide Details<\/h3> …… Moak 28

Centerfed Specials<\/h3> …… K4MDK 30

Recycle Your Receiver<\/h3> …… W9VZR 32

Build a Double Bazooka<\/h3> …… K4KI 36

Dirt Cheap Directional Array<\/h3> …… WA4BKO 40

Instant PS Regulation<\/h3> …… W3MR 41

Take Cover!<\/h3> …… WB5ASA 44

Introducing the Intenna<\/h3> …… Norman 46

The Zeppy Vertical<\/h3> …… K5GP 47

A Cure for Antenna Self-destruct<\/h3> …… W9TKR 48

Quick Ante nna Insulators<\/h3> …… WB9JXU 49

Raising A Tower?<\/h3> …… WA7URL 50

Remote Rain Gauge<\/h3> …… K9EEH 51

Super Loop Antenna<\/h3> …… W2FEZ 52

Rock Bottom 2m Antenna<\/h3> …… W8FX 54

Antenna Gain Facts<\/h3> …… W5OBR 55

The 8JK Array Revisited<\/h3> …… W3ZVT\/4 56

Tower Installation Techniques<\/h3> …… W9JT 58

An Ultimate Invisible Antenna<\/h3> …… WB8MSV 59

Mountaintop Special Antenna<\/h3> …… W9VZR 60

Fiery Endfed<\/h3> …… WA6NCX\/1 61

Build A Vacation Special<\/h3> …… W8FX 62

Apartment Antenna Specials<\/h3> …… WA2ALT 64

Build a Unique Timer<\/h3> …… WA3AJR 66

Cooling Your Relays<\/h3> …… K8ANG 71

A Look At Soviet Test Gear<\/h3> …… W6JTT 72

Surplus Goodies Are Still Around<\/h3> …… Moak 74

The Touchtone Connection<\/h3> …… WA4BZP 75

Build a Phone Exchange<\/h3> …… Moore 76

Build A Brute Power Supply<\/h3> …… WB4QLW 78

Drake Touchtone Review<\/h3> …… WA1JGG 79

Marine Radiotelephone Conversion<\/h3> …… K8EXF 80

Solder Soldier<\/h3> …… W1ZOA 82

When the Lights Go Out<\/h3> …… WB5ASA 84

Ten-tec Mods<\/h3> …… KL7IBQ\/8 96

Computer Logger<\/h3> …… WA1UOU 100

Troubleshooting A Micro<\/h3> …… WB4KEO 102

Super DVM<\/h3> …… WA5VQK 108

Build a kW Linear<\/h3> …… W6DL 112

Build A $2 Drill<\/h3> …… K7AGI 120

Unique Power Supply Tester<\/h3> …… W9HDA 122

Instant Spares<\/h3> …… W4ATE 123

Light Up Your Bench<\/h3> …… WA3VGT 124

Hang Ten<\/h3> …… K8ANG 125

Using the Atlas Transceiver<\/h3> …… Staff 146

PC Layout Tips<\/h3> …… WB9LUI 152

Radio Equipment Insurance<\/h3> …… WA9PDS 154

Information Management System<\/h3> …… K4MDK 156

CW Keycoder Improvements<\/h3> …… WB0QFR 159

Heath HW-2021 Review<\/h3> …… K4JEM 160

The First Step<\/h3> …… W2FEZ 166

All About SCTS<\/h3> …… K6LUA 168

Rotary Autopatch Dialer<\/h3> …… WA1MXV 172
\n
\n

73 Ham Radio Today Issue September 1977<\/a>
<\/h2>\n

A FAAR-oUT DXpedition<\/h3> …… WA6YOB 25

So You Want to Get Into RTTY?<\/h3> …… W9IF 28

Design An Active RTTY Filter<\/h3> …… K2OAW 38

Moving Display RTTY Readout<\/h3> …… WB8SWH 44

RTTY SWling<\/h3> …… WA2MOT\/wT2AAG 52

RTTY Local Loop<\/h3> …… WB5IRY 59

Try the RTTY Reader<\/h3> …… W3JJU Cannon 60

Organize Your RTTY Pix<\/h3> …… W2PSU 66

Build A RTTY Message Generator<\/h3> …… WB9CNE 74

FSK for the Drake<\/h3> …… WB8DMC 78

Baudot to ASCII Converter<\/h3> …… VE4CM 80

Digital Group RTTY Micro<\/h3> …… K2AOU 98

RTTY Test Station<\/h3> …… W2FJT 104

The World’s Cheapest Calibrator<\/h3> …… W9SS 108

RTTY With the KIM<\/h3> …… K4GCM 110

Build A Meter With Class<\/h3> …… WA4LJL 112

FSK for the FT-101<\/h3> …… W6OJF 113

Build A Drift-free T.U.<\/h3> …… VE7DBK 114

Noise Rejector<\/h3> …… WB6ZYK 116

RTTY CRT Tuning Indicator<\/h3> …… W9IF 118

Cassette-aided CW and RTTY<\/h3> …… Staff 122

A Practical 2m Synthesizer<\/h3> …… WA3SYI 146

Buying Surplus<\/h3> …… W2OLU 151

RTTY RKB-l Revisited!<\/h3> …… W9IF 158

Mobile Antenna Tips<\/h3> …… W2FEZ 160

Super Wilson<\/h3> …… K4TWJ 164
\n
\n

73 Ham Radio Today Issue October 1977<\/a>
<\/h2>\n

Communicate On 10.25 GHz<\/h3> – with a simple transceiver …… WA3ETD 26

Home Brew Tilt-over<\/h3> – the water pipe special …… W4MEA 30

Minimize Feedline Loss<\/h3> – UHF buffs front end center! …… W2STM 32

How About 6 FM?<\/h3> – it’s easy with a modified HE-50 …… W3KBM 34

W.A.S. -easily!<\/h3> – catching the last few …… W7FGD 38

Fool the Wire Wizard<\/h3> – a computer would have helped …… Simmons 42

Ultra Simple Diode Checker<\/h3> – for grab bag specials …… K4GOK 44

Beat the PC Shortage<\/h3> – build (glue) your own! …… Stanfield 48

Identify That Transformer<\/h3> – tips for using boat anchors …… Tenny 51

Subaudible Tone Encoder<\/h3> – access those closed machines …… W4NFR 52

Build A ComCoder<\/h3> – versatility for the IC-22S …… K5UBM WB5WSG 60

Attache’ Case Portable<\/h3> – Bond would like it! …… N4AL\/wB4SCN 66

Build A Beeper Alarm<\/h3> – if staying in touch is important …… WA4SAM 68

Try Your KIM-1 On RTTY<\/h3> – CUL on your computer …… WA5DXP 88

S. D. Sales Z-80 Review<\/h3> – quality at a good price …… WA2INM 94

Title Your Pix With A Micro<\/h3> – a useful SSTV accessory …… K6AEP 96

Mastering Network Operations<\/h3> – everything you need to know! ……WB4EZM 104

Try A Trapped Dipole<\/h3> – save copper and coax! …… K4IFH 107

Liberate Your Wilson HT<\/h3> – who needs nicads? …… K2HUF 108

Novice Antenna Specials<\/h3> – tips for that first antenna …… W2FEZ 110

Sound Operated Relay<\/h3> – for the ultimate security system …… WB8DQT 114

Traffic Handling Explained<\/h3> – a lost art? …… WB2YKG 118

The Third Hand<\/h3> – how many times? …… Miller 120

Vehicle Security Systems<\/h3> – protect your rig …… WB5DEP 122

One Cent Channels for the IC-22S<\/h3> – inflation fighter! …… WB2CBC WA2HGQ 150

The Missing Length<\/h3> – phantom IC-22S channel …… KL7IEP\/1 151

Design A Circuit Designer!<\/h3> – with special plug-in boards …… Staff 152

Sensitive Meters Saved<\/h3> …… W6GXN 153

Big Burt In Amarillo<\/h3> – bootlegger nabbed! …… Staff 154

Right Way Wrong Way Navy Way<\/h3> – or the 73 way …… K6DZY 156

Living With the Family Ham<\/h3> – planning births etc …… WA4WZL 158

Add Jazz To Your Tempo<\/h3> – with a few simple mods …… WB8ZBJ 160

Interested In Television?<\/h3> – how to get started …… WB8DQT 164

Simple Electronic Siren<\/h3> – it’s loud! …… K4DHC 176

Digital To Audio Decoder<\/h3> – for the blind operator …… Pacholok 178

Synthesize Yourself!<\/h3> – practical experiments …… W1HCI 182
\n
\n

73 Ham Radio Today Issue November 1977<\/a>
<\/h2>\n

Build The Omni-oSCAR!<\/h3> – practical omnidirectional antenna …… K2OVS 24

Get Set For OSCAR 8<\/h3> – details on the new bird! …… W3HUC 28

Build An OSCAR 2m Transverter<\/h3> – make QRP days a success! …… W2GN 32

Predicting OSCAR Propagation<\/h3> – not always simple …… G3IOR 34

Try OSCAR Mobile<\/h3> – the ultimate DX test! …… W2GN 40

Tic Tac Touchtone<\/h3> – a new mentod! …… W9CGI 44

Visual OSCAR Finder<\/h3> – nice side effects! …… WB2BWJ 50

Cheap Ears For OSCAR<\/h3> – an effective satellite antenna …… W9CGI 54

Track OSCAR With Your SR-52<\/h3> -requires the PC 100 option …… W6UIX 58

Try A T-r For OSCAR 8<\/h3> – turnstile over reflector system …… W9CGI 62

Track OSCAR In Real Time<\/h3> – with your HP-67 calculator …… W9lJ 64

Logical Thoughts About OSCAR<\/h3> – meaningful to computers! …… OA6AD 66

OSCAR DX<\/h3> – a new challenge …… W3TMZ 72

OSCAR Frequency Relationships<\/h3> – new where is my downlink? …… W1ZAW 76

Calculate OSCAR Orbits<\/h3> – with your HP-25 calculator …… VE7BGX 80

CB to OSCAR<\/h3> – from 10 to the sky! …… W9CGI 82

Track OSCAR 8!<\/h3> – step-by-step method …… K2ZRO 86

Build A 2m Power Amp<\/h3> – good for OSCAR uplink ……W4MNW 96

Build A General Purpose Preamp<\/h3> – uses common components! …… W4NVK 98

Receive CW With A KIM<\/h3> – now if only the FCC …… WB3GCP WB8VQD 100

Build This SSTV Pattern Generator<\/h3> – micro-controlled of course! …… K7SBK 106

Super Baud Bumper<\/h3> – for your SWTP 6800 …… WB4GXE 116

QRZ -p-k4!<\/h3> – relax with ham class …… W9CQD 120

Digital Timer Goes Mobile<\/h3> – battery power keeps it trucking! …… K7QCM 122

Straining the Wind<\/h3> – simple wind speed indicator …… Staff 135

Find That Meter Resistance<\/h3> – with this simple bridge …… N2RG 136

VE6 DXer Tells All!<\/h3> – what to do all winter …… VE8NS 144

Remote Speaker Mike for Your HT<\/h3> – this one’s the Wilson …… W2DNY 170

Split Your IC-22S<\/h3> – adding splinter frequencies …… WA6OMH 172

Remote Monitor for Your Scanner<\/h3> – complete with lights …… K1CCK 174

Electronics Study Guide<\/h3> – remember when..? …… Wilson 176

Low Cost Tone Decoder<\/h3> – for repeater control …… WB0VSZ 178

Hufco Counter Kit<\/h3> – report from a happy user …… WA2LPB 182

A Single Tone Can Do It<\/h3> – simple tone control system ……W7JSW 184
\n
\n

73 Ham Radio Today Issue December 1977<\/a>
<\/h2>\n

Inside Ten-tec<\/h3> – QRP innovators …… K4MDK 34

The History of Ham Radio<\/h3> – part V …… W9CI 38

Try BCB DX!<\/h3> – when you’re tired of twenty …… WB2BJH 42

Build An Engine Analyzer<\/h3> – use your scope! …… WA6THG\/kH6 46

More Repeater Control Devices<\/h3> – control unit\/audio interface …… W7JSW 50

How Do You Use ICs?<\/h3> – part VIII …… WA2SUT\/nNN0ZVB 56

Finally! A Practical Discriminator!<\/h3> – metering system that is …… K4GOK 62

A Kilowatt Alternative<\/h3> – try a gain antenna …… WB0KTH\/4 66

All About Transceivers<\/h3> – Novices take note! …… WB5ASA 68

German Amateur Procedures<\/h3> – and repeater information …… W8CM\/5 72

The DA4FB Story<\/h3> – American repeater in Germany …… WB4EWX\/dA1KD 78

Decode Morse<\/h3> – with an 8080 …… WB9KPT 92

Futureshot<\/h3> – Just around the corner …… K9KIC 98

Try A Micro Contest Logger<\/h3> – the 6800 does it all …… KH6GMP 102

Computerized Global Calculations<\/h3> – finding the best way to Pago Pago …… VE3EKR 106

Micro Meets JANET<\/h3> – meteor scatter anyone? …… W5HK\/9 WB9WXM 108

Run Sheila Run!<\/h3> – real-life radio control …… WB0IFF 114

CB to 10<\/h3> – part VI: antenna suggestions …… K5UKH 120

CB to 10<\/h3> – part VII: convert a TRC-11 …… WB8CLF 122

Battery Backup for Digital Clocks<\/h3> – don’t miss a second …… WA2EJT 123

Roll Your Own QSL Cards<\/h3> – originality for rare ones! …… G3WDI 130

Glide On Six<\/h3> – radio control primer …… WB3BQQ 134

More IC-22S<\/h3> – add a programming switch …… K0HPF 138

Amplitude vs. Frequency<\/h3> – poor man’s spectrum analyzer …… Staff 140

How About An Auto CQ?<\/h3> – generate some 10m activity! …… K4TSY 142

SSB For the “Frog”<\/h3> – tame the croak …… W5JJ 144

Beat the Books<\/h3> – study hall special …… WB9YKR 145

Clocking Those Clock Kits<\/h3> – check out the MK-03! …… W6SWZ 148

Digital Signal Source<\/h3> – TTL signals for counters micros …… K7HKL 150

Regenerated CW<\/h3> – CW: as you like it …… Staff 152

High-band Your KDK<\/h3> – monitor the other half! …… W2PMX 177

The Rescue<\/h3> – rest-life drama …… WA6LJL 178

Welding Rod Special Antenna<\/h3> – for seamless contacts …… WA5TSJ 179

Tanks A Lot!<\/h3> – inductor calculation program …… WA9GUK 182

Build the EI Sapo Tester<\/h3> – for hams with spare time …… Staff 184

Finally! A Simple PROM Burner!<\/h3> – for the 8223 and 82S23 …… W7JSW 186

Try A Topical CQ<\/h3> – for special interest groups …… K4GRT 188

Call Letter Gouger<\/h3> – adds class to any shack …… WB6JYK 189

Adjustable Bench Supply<\/h3> – would you believe 1.2-37 volts? …… Staff 192

Test Instrument Saver<\/h3> – an old phone is required …… Miller 193

Photoelectric Bench Accessory <\/h3>– when you need an extra “eye” …… W3KBM 196

Inside the SR-52<\/h3> – calculator doubles as micro …… WA6THG 198

Boost Your TR22!<\/h3> – with a mini rock crusher …… WA2INM 200

QRM on the Moon?<\/h3> – yep on all bands …… W4NVK 204

Filcher Foiler Car Alarm<\/h3> – car door operated …… WB6THJ 206

Quick Deviation Meter<\/h3> – for the IC-22A …… WA1UUK 207

Build a Noise-free Power Supply<\/h3> – avoid spikes with sine waves …… K4DHC 208

Surplus Goodies<\/h3> – are they really for you? …… Villastrigo 210

Try A New Mode!<\/h3> – don’t let boredom strike …… N4KC 214

Build A Useful HF Receiver<\/h3> – Novice special …… Staff 216

Wake Up A Dead Repeater!<\/h3> – with these new Q signals …… K9AZG 218
\n
\n

73 Ham Radio Today Issue January 1978<\/a>
<\/h2>\n

The Go-first-class Digital Tester<\/h3> – build this outstanding in-circuit logic monitor …… W7BBX\/4 24

The Unbeatable Base-loaded Three-element Rotary Vertical<\/h3> …… W3KBM 22

Negative Numbers On A $9 Calculator<\/h3> …… WB6IXT\/7 32

Sideband Exposed!<\/h3> -the mysteries of SSB unveiled -why not understand it once and for all? …… W2FEZ 34

IC Timer Review<\/h3> …… W3HB 40

Forget Ohm’s Law<\/h3> …… Stanfield 46

Brew Up A Signal Generator<\/h3> …… Staff 50

Reprogram Your IC-22S<\/h3> …… W6UTE 54

Try The ID VIP Method<\/h3> …… Hargett 58

Build A Deluxe QRP Transmatch<\/h3> …… WB4VlQ 61

Dodge That Hurricane!<\/h3> …… WB4IXK 62

Guilty? Or Not Guilty?<\/h3> …… WA6HDK 69

Transformers for Purists<\/h3> – have fun designing and building your own transformers …… WA7NEV 70

Simple Scanner For the IC-22S<\/h3> …… KH6EM 74

Cool It!<\/h3> …… K4Kl 78

How to Get Better Satellite Pictures<\/h3> – improving weather satellite recording systems …… W3KH 82

To Err Is Human<\/h3> …… WB2TOC 86

The $500 Egg Timer<\/h3> – how to use your computer for practical around-the-house things …… Mickle 92

You’ll like SOL!<\/h3> …… WB6JYK 94

How To Keep Your Computer Happy<\/h3> …… WD9DDV 98

It’s Super Clock<\/h3> – software to enclockify your computer …… W4CQI 102

Improve the AX-190 Receiver<\/h3> …… WA3TLD 106

Hooking the Kids<\/h3> …… DiBlasi 114

Tune Your Tower To 80\/160<\/h3> …… K9SOG 118

Clean Up Your Act<\/h3> …… Staff 136

Where Oh Where<\/h3> …… W2XQ 138

Power Supply Regulation<\/h3> …… WA3TLD 140

The Op Amp Encyclopedia<\/h3> – part I of a lonnnng series …… K4IPV 142

How to Build a Bionic Elephant!<\/h3> – and have it smell like a rose …… WB6IQS 146

Transistor Primer<\/h3> …… K1UZ 149

I Love My GTX-1<\/h3> …… WA4HVH 150

How It Was<\/h3> …… W6lM 152

Build This FM Signal Generator<\/h3> …… W9HDA 154

“I Must Have One of Those Somewhere”<\/h3> – confessions of a junk box junkie ……WB7CTH 158

Is It Glass Or Iron?<\/h3> …… WA2SUT\/nNN0ZVB 160

Build A Simple Capacitance Meter<\/h3> …… W8DCC 164

Simple Sequential Decoder<\/h3> …… W7JSW 166

PC Techniques<\/h3> …… Staff 168

Space Age Junque III<\/h3> …… W9CGI 170

The Ham CBer<\/h3> …… WA4BBU 172

Laying Our Your Shack Scientifically<\/h3> – human engineering comes (at last) to amateur radio …… W3ZVT 174

Hands-free Mobile Mike<\/h3> …… W9KXJ 178

Heath HT Goodies<\/h3> …… WA1IZS 180

Try A Sensor Keyer<\/h3> …… WB4TED 184

Logical Logic<\/h3> …… N6WA\/wA6JMM 188

Pulses Galore!<\/h3> …… Plevcan 194
\n
\n

73 Ham Radio Today Issue February 1978<\/a>
<\/h2>\n

Inexpensive EKG Encoder<\/h3> …… WA3AJR 20

What Are They Showing On SSTV?<\/h3> – have you been missing something? …… K4TWJ 24

Build A Better Phone Patch<\/h3> – hybrid -op amps-the works …… Poirier 28

Drake TR-4CW Review<\/h3> …… K4TWJ 30

Build A 3-1\/2 Digit DVM<\/h3> …… WA5VQK\/5 40

Clean Up Your Tochtone Act<\/h3> …… WA6THG 44

The Tempo 2020 -satisfaction tells all<\/h3> …… WA2KOK 48

Repeater Procedure<\/h3> …… WB4NAY 52

Tighten Up Your SB-102<\/h3> …… W2POG 53

QRP Hints<\/h3> …… N2MW 54

Brass Pounding Simplified<\/h3> …… K6JM 58

UHF Propagation<\/h3> …… KL7IEP\/1 W1KIQ 62

Tune-up Aids For the Blind<\/h3> …… WB1FFQ 64

KIM-l Can Do It!<\/h3> …… W4CQI 68

A Secret Weapon For Road Rallies<\/h3> …… K9PTI 72

Looking For A Micro?<\/h3> – consider the KIM-1 …… O’Reilly 76

Fiendish New QUBIC Program<\/h3> …… Bishop 78

Put An ELF In Your Keyer<\/h3> – sneaky computer strikes again …… WB9MQY 82

Try HCAI<\/h3> …… Hughot 84

Raid!<\/h3> …… W8JJO 88

See Q See Q<\/h3> …… VE3FLE 90

Measure Periods With Your Counter<\/h3> …… K6MWM 92

Super Siren<\/h3> – it’s loud! …… 96

CB to 10-part VIII: the Publicom I<\/h3> …… WB6LQE 98

Coming of Age<\/h3> …… VE3FlE 100

Put A Sony In Your Shack<\/h3> …… Staff 102

How To Compete With An HT<\/h3> …… VE7AQS 110

S.A.S.E.<\/h3> …… W9CGI 112

A Ham’s Life Cycle<\/h3> …… VU2JS 114

Antennas<\/h3> …… K4SE\/wA4DBG 116

The $5 Magnetic Mount<\/h3> – cheap and sticky …… WA2UMV 118

Versatile Transistor Tester<\/h3> …… WA5TFK 122

Autopatch Digit Suppressor<\/h3> …… K4FFW 124

Surplus Adventures<\/h3> – pound foolish! …… W9HDA 126

TS-700A Calibrator<\/h3> …… K9POZ 128

Keeping the Zap Out of the Shack<\/h3> …… W7RG 130

Painless Touchtone Adjustment<\/h3> …… W3HT 146

The Overkill Stall Warner<\/h3> …… W9CGI 150

Try 220 You’ll like It!<\/h3> …… K0OST 154

How To Dissipate 200 000 Megawatts<\/h3> – fool Mother Nature …… W4NKV 158

Can A Miniature Antenna Work?<\/h3> – relief for the cliff dweller …… W6AQM 160
\n
\n

73 Ham Radio Today Issue March 1978<\/a>
<\/h2>\n

The New Improved “Best Keyer Yet”<\/h3> – updating MINI-mOS …… K4JEM 22

The Powerful Grounded Antenna<\/h3> – thrives on poor soil …… W0SII 26

How To Cut Costs On Power Supplies<\/h3> …… W9HDA 28

You Too Can Go Digital<\/h3> …… K2RB 32

Old Receivers – A Hidden Gold Mine<\/h3> – updating those ‘405 receivers …… W6GXN 36

Old Rigs Can Live Again!<\/h3> …… K41PV 40

Novices Paddle Your Way To Happiness<\/h3> – super deluxe Novice keyer …… W0OGX 44

How Many pF is That Capacitor Really?<\/h3> …… WA0ZCR 48

Exorcising Power Supply Demons<\/h3> …… K41PV 52

Meet the Plastic Wonder<\/h3> …… K0OXB\/5 58

Don’t Miss the Excitement of QRP<\/h3> …… K9SGZ 62

Is Your Repeater Up-to-date?<\/h3> …… W4VGZ 66

1220 MHz -use It Or Lose It!<\/h3> …… K1CLL 72

New Protection For Your Car<\/h3> – simple force field system …… WA4GIM 76

The Great cover-up<\/h3> …… W4FXE 78

The World Of Tone Control<\/h3> …… K3JE\/2 82

Solve Those Parallel Problems<\/h3> …… N3IE 88

At Last! An RFI-free Computer!<\/h3> – the Cromemco Z-2 …… WB6JYK 92

Programming Coil Design<\/h3> …… K7SBK 98

If You Want To Know Where You Are<\/h3> …… Burhans 108

Do Biorhythms Really Work?<\/h3> …… W4KFT 110

From CB To Amateur Radio<\/h3> …… WB4POH 114

Improve Your HW-2021<\/h3> …… K1WXK 130

How Much Power Does It Draw?<\/h3> …… Fowler 131

Surprisingly Low-cost Lab Supply<\/h3> …… W6GXN 132

Wireless Monitoring For the Bionic Ham<\/h3> …… W8FX\/4 134

Flash Project For Camera Fiends<\/h3> …… WA6UNK 140

Kerchunk Counter<\/h3> …… W6NUI 143

The Solar-powered Ham Station<\/h3> – one hundred Watts yet! …… W5VBO 146

The Cheaper Chip<\/h3> …… W7JSW 150

The Go Pro HT Mod<\/h3> …… W8FX\/4 152

A 2m Antenna for the Perfectionist<\/h3> – with considerable details …… WB2AWG 154

Are You Afraid To Build?<\/h3> …… W4RYO 156

A Brass Horn For X-band<\/h3> – simple 10.5 GHz antenna …… W1SNN 164

A Cheapskate’s Circuit Board<\/h3> …… WA1BVD 168

Good Grief Not the 225 Again?<\/h3> – yes even more flexibility …… WB2LEI 172

Avoid An Overvoltage Catastrophe<\/h3> …… W7RXV 176

The Amazing Zener Sweeper<\/h3> – big deal gadget tests zener diodes …… WB4YOD 178

How To Use A Varactor<\/h3> …… W6JB 182

Can A Diode Replace A Relay?<\/h3> …… Staff 184

Shock the Car-burglar<\/h3> …… W1DIS 185
\n
\n

73 Ham Radio Today Issue April 1978<\/a>
<\/h2>\n

Ecstasy In Multimeterland<\/h3> – build this autoranging marvel …… WA4AIH 24

How To Succeed On 1296<\/h3> – cat-food can 50-watt amplifier …… W4UCH\/2 32

How Do You Use ICs?<\/h3> – part IX …… WA2SUT\/nNN0ZVB 44

You’re Still Using Tubes? Yeccch!<\/h3> …… W6HPH\/g5AWI 50

The Challenge Of 10.5 GHz<\/h3> – use it or lose it to Smokey …… W1SNN\/wR1AFE 60

In Search Of the Ultimate<\/h3> – an incredible counter calibrator …… W6YUY 66

Super Deluxing the TR-33<\/h3> …… WA6JFP 72

Feeding A Hungry Microcomputer<\/h3> …… W6GXN 76

The Exterminator<\/h3> …… Lasher 84

At Last! A Use For Your Computer!<\/h3> – RTTY filter design program in BASIC …… Stewart 88

Now Anyone Can Afford A Keyboard<\/h3> …… Eaton 92

Godbout Strikes Again<\/h3> – ECONORAM: an outstanding value ……WA7NEV 102

The Klingons Are Coming!<\/h3> …… WB9LSS 104

The Experimenter’s Dream Calculator<\/h3> …… Reid 114

Toward A More Perfect Weather Picture<\/h3> …… Cawthon 116

Is TTL Already Obsolete?<\/h3> – CMOS vs. TTL …… WB5IRY 120

Simple CW Interference “Filter”<\/h3> – diode code regeneration …… W8FX\/4 132

How Sunspots Work<\/h3> – basics for the Novice …… WA4FDE 136

Schottky: A New IC Generation<\/h3> …… McClellan 158

Use Noise To Tune Your Station<\/h3> …… W6DOB 160

The Double Whammy Mobile Clarifier<\/h3> – tune out the wife and kids …… K8JS 168

Danger! Microwave Radiation!<\/h3> – just how much is dangerous? …… WB6JPI 170
\n
\n

73 Ham Radio Today Issue May 1978<\/a>
<\/h2>\n

A Keyer? Who Needs Another Keyer?<\/h3> – would you believe a $2 keyer? …… W6APZ 24

Official FCC RFI Report<\/h3> – curing radio and TVI …… FCC 30

Hey Old-timers! The Breadboard Is Back!<\/h3> – jiffy up those IC circuits …… WA7NEV 46

Fake ‘Em Out With Remote Control<\/h3> – TT-operated control unit …… W4VGI 52

Now-a Digital Capacit- Meter!<\/h3> – simple construction project …… W3KBM 58

DMM Survival Course<\/h3> – all about using digital multimeters …… McClelian 62

What Happened To SSTV?<\/h3> – is it dead or alive? …… K4TWJ 72

Build This Excitingly Simple Receiver<\/h3> …… K4DHC 76

Can Hams Counter Police Radar?<\/h3> – electronic warfare: another step …… WA4WDL 80

Why Not Go First Class?<\/h3> – FM RTTY ID PL TT etc! …… W9CGI 84

Diary Of A Survivor<\/h3> – cyberosis victim tells all …… WA6PPZ 92

How Good Is the North Star Disk?<\/h3> – and why is it getting so popular? …… Bosen 100

Pseudorandomness Is Just Not Good Enough<\/h3> – true random happiness with a Z-80 …… WA1PTZ 103

Beethoven Need Not Fear<\/h3> – a little night music on the micro …… G8HBR 106

Hex Converter for True-blue Octalists<\/h3> – BASIC program …… Dolinear 110

The Cheaper Beeper<\/h3> – “Bell” for your CRT RTTY or uP …… VE2BVW 111

Semi-instant Program Loading<\/h3> – bauding up the SWT 6800 …… WB4GXE 112

The Super Select-o-ject<\/h3> – kill rotten QRM with this filter system …… W8FX\/4 116

The IG-102 Goes Transistor!<\/h3> -tubeless portability for this Heath signal generator …… Rossnick 120

The Miser’s Delight Repeater Controller<\/h3> – the very ID! …… W2PMX 124

Another Ten Minute Timer?<\/h3> – yup …… N9MX K9MX 128

Make Antenna Tuning A Joy<\/h3> – instant swr bridge …… K5QY 134

If You Want To Know Where You Are<\/h3> – loran-c receiver: part: II …… Burhans 146

Home-canned Dummy<\/h3> – cheap half-gallon load …… WB2BWJ WA2JZR 154

De-Zap Strap<\/h3> – so you can MOS around …… W6SWZ 156

No Not Another 22S Mod?<\/h3> – yes another Icom 22S mod …… VE2TM 158

Scare the Hell Out Of Burglars<\/h3> – ham shack alarm systems …… WA6WUI 160

The COR Goes Solid State<\/h3> – turning two Midland rigs into a repeater …… WA6ILQ 162
\n
\n

73 Ham Radio Today Issue June 1978<\/a>
<\/h2>\n

Happiness Is Being A Ham Manufacturer<\/h3> – 73 visits Cushcraft …… W2NSD\/l 30

Extended Double Zepp<\/h3> – old-timer’s delight still works …… W6TYH 34

New Dipole Feeder<\/h3> – tuned feeders yet! …… AA6AX 38

The Cliff-dweller’s Delight<\/h3> – how to operate from an apartment …… WA2UVC 40

Wait Till You Try 16 Elements!<\/h3> – 15dB gain on 2m is a real kick …… WA8FCA 42

Working 15m With A 20m Beam<\/h3> – by adding three more elements …… W8ZCQ 46

A Better Feedthrough For Cables<\/h3> – the $2 solution …… WA8FCA 50

Resurrecting The Beverage Antenna<\/h3> – try this 55-year old low-noise low band antenna …… W5USM 52

How To Hang A Longwire<\/h3> – without a catastrophe …… W5GN 58

The “German” Quad<\/h3> – six bands with one antenna …… WD4CPK\/dF3TJ 60

Mobile In Disguise<\/h3> – the invisible 3\/8 wave 2m antenna …… K9MLD 62

Better Than A Quad?<\/h3> – try a delta loop …… WA4NWW 64

The Perverted Double Vee Antenna<\/h3> – double your pleasure from 40m through 10m …… W5VSR 66

Creeping Crud Got Your Signal?<\/h3> – pollution is slowly destroying your system …… K4TWJ 72

Towering Low Band Antennas<\/h3> – berserk mathematician figures impedance …… K3OQF 74

The 80 Meter Pile Crusher<\/h3> – the ultimate vertical? …… W2OZH 76

Phased Verticals For Easy DX<\/h3> – and under $20 …… W1ZY\/lA0BP 82

Modernize The Matchbox<\/h3> – increased capability for a classic coupler …… W8FX\/4 84

The Miserly Magnetic Antenna<\/h3> – make this sausage-can magnetic mount …… W2AZD 86

The 75m DX Chaser Antenna<\/h3> – the 5\/8 wave works on 75m as well as 2m …… N4VD 88

The Invisible Allband Antenna<\/h3> – works DX too …… WA4FYZ 92

Who Says Verticals Don’t Work?<\/h3> – the four-band phased-vertical bomber …… W2LFJ 96

Low-cost Keyboard-iI<\/h3> – software for the April keyboard …… Eaton 100

Computerized Loop Antenna Design<\/h3> – in BASIC …… WB2IPD 108

Hey! Wail For Me!<\/h3> – slowing computers to reading speed …… WA3MWM 111

Morrow’s Marvelous Monitor<\/h3> – reviewing the Morrow front panel …… Eigsti 114

Enjoy All Bands With A Remote Tuner<\/h3> – motorized marvel …… KL7AE 118

New Use For CB Antennas<\/h3> – converting ’em for ham use …… WA2KBI \/jY9KS 122

Confessions Of A Vertical Fanatic<\/h3> – careful he’s looking for converts …… KH6HDM 134

Novice Guide To Phased Antennas<\/h3> – part I …… W8HXR 136

The 21-element Brown Bomber<\/h3> – 2m beam with sadistically strong signal …… W9CGI 140

The Towerless “Tower”<\/h3> – new grounded-rotor design …… K4FK N4OG 146

The Two Hour Two Meter Beam<\/h3> – simple five-element loop yagi …… WB9TNW 154

Now Try 1296 MHz<\/h3> – simple discone antenna …… WA4WDL WB4LJM 158

The OSCAR Boppers<\/h3> – turnstile antennas for 145 MHz and 432 MHz …… G3ZCZ\/w3 160

Cushcraft Does It Again!<\/h3> – their new tri-bander is a winner …… K1OPQ 166

The S-meter Bender<\/h3> – W7DND’s magic antenna …… W8HXR 170

Amazingly Simple Log Periodic Antenna<\/h3> – an 8-lb mini LP for 20m …… K1QAR 174

Disguised Birdhouse Vertical<\/h3> – give the bird s a hot foot with this secret antenna …… K5LUW 178
\n
\n

73 Ham Radio Today Issue July 1978<\/a>
<\/h2>\n

Enjoy All Five Bands<\/h3> – with this novice no-trap antenna …… W8FX\/4 32

Reincarnating Old Test Equipment<\/h3> – a 1942 capacitance meter is born again …… W3BM 40

Finding Radio Pests<\/h3> – basics …… WA1UUK 42

Video Magic For Your Home<\/h3> – to make boredom disappear …… K4TWJ 44

Novice Guide To Phased Antennas<\/h3> – part II …… W8HXR 48

Can A $20 FM Rig Work!<\/h3> – testing the VHF Engineering TX150 2m xmtr …… WB4LJM WA4WDL 52

Hiss Exterminator<\/h3> – an ear-saver for the TS-700A …… K9POX 54

Instant Engraving<\/h3> – to protect your equipment …… W7RXV 58

The New Improved Automatic Thermostat<\/h3> – adding a night thermostat …… W9YBU 60

Give ‘Em A Break<\/h3> – with a cheaper repeater beeper …… WB6JPI 62

It’s Flora Clock!<\/h3> – and all is well …… W8FX\/4 64

Build Your Own Digital Dial<\/h3> – great update for your receiver …… W1OOP 66

The FM Rebroadcaster<\/h3> – flexibllity for the FRG-7 …… W8FX\/4 72

J.B. Fields Radioman<\/h3> – now it’s the Navy’s turn …… WB7SZC 74

Counter Accuracy For Perfectionists<\/h3> – updating the K2OAW counter updates …… K0KDT\/5

The New Op Amps<\/h3> – better lower cost …… WA0UVX 78

22 Remote<\/h3> – outside programming for your IC-22S …… W8FX\/4 80

Handling Ole George<\/h3> – is amateur radio ready …… K5GNZ 84

The IC-22S Scanner<\/h3> – still another 22S mod …… W9LIJ 86

Computerized Capacity Meter<\/h3> – cost $1 plus a computer …… Eccleston 88

A Much Needed Micoder Power Supply<\/h3> – beets that lily-livered battery …… K3MPJ 90

Your ‘Scope Can Be Improved<\/h3> – simple calibrator …… N5KR 92

How About SSB CB Conversions?<\/h3> – no strain …… W4GMM 96

The Universal Notcher<\/h3> – easy as pi …… W9CGI 98

The $5 Memory Keyer<\/h3> – for lazy cheapskates …… WA1EBY 100

Should Repeaters Use Subaudible Tones?<\/h3> – theological argument …… K9XI 102

RAMmed By Morrow<\/h3> – ECONORAM III lauded …… Hallen 110

Six Said His First Words Today!<\/h3> – and you taught him how …… WA3MWM 112

The 22S Programmer Program<\/h3> – diode selection in BASIC …… W6OVP K6MAR 114

The Occult Computer<\/h3> – test for ESP with a micro …… WA6VIY 116

A Baudot Program For Your Micro<\/h3> – simulated Vegas visit …… Fricke 118

VHF Notch Filter<\/h3> – rejection can be beautiful …… WA4WDL WB4LJM 123

Yes You Can Build A Synthesizer!<\/h3> – 220 MHz synthesizer for under $50 …… K2DVQ 124

Beat the Microphone Blahs<\/h3> – more oomph for FM audio …… KlHQW\/4 134

Forbidden Contacts<\/h3> – 19 countries off limits to 4X4 amateurs …… Nobel 136

A Darn Good IDer<\/h3> – repeaters get smarter every day …… K5OM 142

Pick A Frequency …Any Frequency<\/h3> – ultra-flexible crystal calibrator …… W8FX\/4 146

Sometimes A Kit Is Best<\/h3> – Bullet power supply kit exposed …… W6SWZ 150

Coming In Out Of the Cold<\/h3> – power supply for your mobile rig …… W6GXN 154

Roy Rogers Special: Triggered Sweep<\/h3> – lab scope performance for less than a gigabuck …… Renaud 156

VHF Transverters and the FT-l0l<\/h3> – quickie FM conversion …… W6OJF 168

Instant Paddle<\/h3> – cheap too …… W3IHA 170

Watch the Wind!<\/h3> – with this junk box anemometer …… WA4FWR\/5 172

The War Against Rust<\/h3> – some good news for radio towers …… K8AO 176
\n
\n

73 Ham Radio Today Issue August 1978<\/a>
<\/h2>\n

Radio Row Revisited<\/h3> – it’s alive and well in Tokyo …… W8JJO 26

How To Work Europe With An HT<\/h3> – hint: requires trans-atlantic plane fare …… WB9PYM 28

What? CB Repeaters?!<\/h3> – perfectly legal too …… WA4EOX 34

A Complete X-band Transmitter<\/h3> – easv to build ……W1SNN 38

Shock!!!<\/h3> – what to do when Thor’s hammer falls …… McAlister 44

The PVC Portable<\/h3> – a “go anywhere” 2m ground plane …… WA6RJK 48

The Amazing Mobile life Preserver<\/h3> – simple but effective …… W2EVM 51

Power line DX<\/h3> -(almost) wireless remote control …… N2CX 52

Ruddy Good Show!<\/h3> -2 meters in the Mother Country …… G3WDI 58

Rock Steady<\/h3> – touchtone! stability for Heath’s HW-2021 …… WA5RON 60

In the Eye of the Beholder<\/h3> – ugly transformers make beautiful power supplies …… WB6JYK 64

The End of Rf Feedback<\/h3> – here’s how the pros do it …… K4TWJ 72

The Heavyweight<\/h3> – a keyer base that stays put …… K9MX 74

Sleight of Hand<\/h3> – getting 12 V from 24-v transformers …… K4SE 76

CD to 10<\/h3> – part IX: a pair of Radio Shack rigs …… WB2UYI 78

In Search Of Stability<\/h3> – temperature-compensated crystal oscillators …… Burhans 80

On Your Mark!<\/h3> – RTTY tips for the TS-820 …… WA4KIL K4FK 82

A WWV Primer<\/h3> – become a calibration freak …… W8FX\/4 84

The Swiss Fork Special<\/h3> – half-a-beam space saver …… Staff 90

The End of the Rat’s Nest<\/h3> – a sensible operating console …… WB9FRM 92

2001 -3<\/h3> – a ham odyssey …… WA5SNZ 94

The Kalculating KIM-l<\/h3> – calculator versatility for any KIM …… Lasher 100

A No-cost Digital Clock<\/h3> – use your programmable calculator …… N8RK

The BASICs of L-Network Design<\/h3> – your micro makes it simple …… K7SBK 108

Hung Up On Autopatch?<\/h3> – build this frustration fighter …… WA6THG 112

Updating the Wilson 1402<\/h3> – making a good rig better …… WA9RAQ 114

Quick Check For TT Pads<\/h3> – test for flea market bargains …… K3BPP 115

The Op Amp Beam Heading Indicator<\/h3> – modernize your antenna system …… K0BV

Super Charger<\/h3> – keeps nicads up to snuff …… WA7YGB 120

HW-l0l Owners Check This!<\/h3> – RIT mod for the good old HW-101 …… HB9BLU 126

Sidetone Is A Must<\/h3> – improves your fist enormously …… VE3EKR 128

The Tiny Tone Repeater Saver<\/h3> – super-small tone burst system …… W4VGZ 132

Dispense It Right!<\/h3> – simple tips for wire and cord …… W4RVO 141

Ham Radio Is NOT A Rich Man’s Hobby<\/h3> – another myth exploded …… WA6NCX\/l 142

The Toggled 22<\/h3> – simplified program for your IC-22S …… Fletcher 148

Custom-make Your Key Paddle<\/h3> – the iambic Zephyr …… W6JB 150

Don’t Let Your Battery Die<\/h3> – extend its life with this simple timer …… WB8TXG 151

New Life For Double Sideband!<\/h3> – awake ye pioneers and get cracking …… K1IO 152

Time And Tide -digitally<\/h3> – march to a different drummer …… WA1TNG 156

The Sneaky J<\/h3> – for cliff dwellers and other unfortunates …… W8FX\/4 160

The End of Autopatch Embarrassment<\/h3> – don’t get caught with your Micoder down …… W4CUG 168

The “Do It All” Digital Clock<\/h3> – it’s even programmable …… K6UGT 176

More CW Fun With Break-in Keying<\/h3> – how it works …… WB0KTH 180

Poor Man’s Cruise Control<\/h3> – better than the commercial jobs …… W9CGI 184
\n
\n

73 Ham Radio Today Issue September 1978<\/a>
<\/h2>\n

CB to 10-part X: Realistic’s Mini 23<\/h3> …… K5LUW\/k5SA 38

Four-wheel Frenzy!<\/h3> – hams and the Baja International …… K6WS 26

T-r Erotica<\/h3> – rf switching with PIN diodes …… W4VGZ 32

The Autodialer Revisited<\/h3> – a circuit board and other improvements …… W7JSW 34

Watergate Special<\/h3> – create your own 18-minute gap …… HB9BLU 36

Be Legal<\/h3> – build an ID reminder …… AD4A\/wA4MFY 40

Another IC-22S Scheme<\/h3> – for oddball repeaters …… WA1ZMQ 44

Improving the SWTPC UDI<\/h3> – self-preservation made easy …… K3MPJ 46

Graduate to a Better Operating Desk<\/h3> – lost of class …… WB6EKO 48

The SWL Bible<\/h3> – tuning the ends of the world …… W2XQ 50

The Mobile Dream Machine<\/h3> – Kenwood Drake Larsen.. and Ford …… K9SQG\/8 58

Be A Surplus Survivor<\/h3> – don’t get burned by a boat anchor …… WB4APC 62

Tracking the Wild Turkey<\/h3> – DF tips …… WA8BHR 64

High Q Antennas<\/h3> – stop worrying about swr …… K4KI 68

When In Doubt Improvise!<\/h3> – adding TT convenience to your HT-144B …… W6LTV 72

Relief for the Rockbound<\/h3> – continuous tuning for FM rigs …… WB2EQG 74

Power Supply Magic<\/h3> – the forgotten voltage doubler …… Burt 78

DVM Scrapbook<\/h3> – the basics …… McClellan 82

Meet Mr. Blizzard<\/h3> – Dayton hams were ready …… K8YQH\/aA8P 88

The Blizzard Of ’78<\/h3> – a real snow job …… W8HXR 92

How Do You Use ICs?<\/h3> – part X …… WA2SUT\/nNN0ZVB 94

Relax and Unwind<\/h3> – your antenna wire …… WA4TJJ 98

Nuclear Attack!<\/h3> – WWIII on your SR-52 …… WA7WKA 100

Computerized QSO Records<\/h3> – who needs a logbook? …… WA7VZR 106

RAM Checkout’s A Snap<\/h3> – this tiny program does the job …… WA7NEV 112

The Case of the Missing Offset<\/h3> – adding to the HW-2021 …… K3JZD 118

What Do You Do With A Timekube?<\/h3> – when in doubt modify it! …… Staff 122

Gourmet Guide To Capacitors<\/h3> – for that project you have cooking …… W5JJ 126

The ARC Tuner<\/h3> – rejuvenated surplus …… K9QLL 128

Home-brew Circuit Boards<\/h3> – cheap and simple …… W9IWI 132

73 Reveals Bias!<\/h3> – transistor operation exposed! …… W5JJ 136

CB to 10<\/h3> – part X: Realistic’s Mini 23 …… K5LUW\/k5SA 138

Kerchunk …Kaboom!<\/h3> – safe distances between dynamite and rf …… N5KR 140

Be Mr. Clean!<\/h3> – simple RTTY trash remover …… WB4FXD 142

Build the Triple Threat Keyer<\/h3> – great Novice project …… W8FX\/4 144

The Ten Meter AM Antenna Special<\/h3> – $5 vertical also works SSB or FM …… W6RCL 146

Buddy Ya Got A Match?<\/h3> – build one L of a matcher …… K4KI 152

Another Trick for the 22S<\/h3> – now it’s a remote control system …… WB7SHW 164

“Stop Timeouts!” Revisited<\/h3> – PC board for K3VTO’s timer …… WB3ELV 168

Maintain Control<\/h3> – keeping power tools in their place …… Stanfield 170

CB to 10<\/h3> – part XI: Hy-gain’s PLL rigs …… WB5BSG 172

Active Voltage Divider<\/h3> – for dividing active voltage …… PY1AQL\/cT1EM 174

Charge!<\/h3> – your nicads …… W4VGZ 201

Light Right?<\/h3> – do it yourself photo exposure meter …… Mills 204

Micoder Magic<\/h3> – improve it with easy mods …… K4BJF 214

Build the IC Experimenter<\/h3> – getting started with TTL and CMOS …… Leonard 220

A New Type of 10 GHz Receiver<\/h3> – use it or lose it …… Kopeika 4Z4TJ 222

Two Meters At the Summit<\/h3> – a backpacker’s delight …… W6FJT 224
\n
\n

73 Ham Radio Today Issue October 1978<\/a>
<\/h2>\n

DXpeditioning<\/h3> – a “how to” guide …… WA2VMS 26

VHF On Your Frequency Counter<\/h3> – an easy-to-build prescaler …… WB0KLH 34

The KM1CC Story<\/h3> – hams celebrate Marconi’s miracle …… WA1JWD 38

Good News!<\/h3> – easy autoranging for your counter …… Lassagne 44

Mighty Mods for the 820S<\/h3> – more power and convenience …… K4FK WA4KIL 48

Improving Heath’s HT<\/h3> – a hall-dozen swell mods …… WA6TLK 54

Total Control<\/h3> – a versatile TT system …… WB2MPZ 60

Oddball Splits and the IC-22S<\/h3> – work any repeater …… W6YUY 64

The History of Ham Radio<\/h3> – part VI …… W9CI 68

Reusing Coax Connectors<\/h3> – worthwhile salvage job …… W0FEV 72

Building From Magazine Articles<\/h3> – the breadboard\/wire-wrap way …… WA7NEV 74

Super Simple TT Generator<\/h3> – uses almost no components …… WA6AFX 78

Microstrip<\/h3> – magical PC technique explained …… N6TX 80

Low-pass Filler Primer<\/h3> – tells all …… K2OAW 98

Hello Hamdom!<\/h3> – a Cber makes the switch …… WN3NNY 102

More “Coming Of Age”<\/h3> …… VE3FLE 103

Rejuvenate A Pawnee!<\/h3> – put it on 2 …… K4GRT W4IEV 104

High Seas Adventure -ham Style<\/h3> – part I …… WA6FEI 112

Build A Better Beeper<\/h3> – variable time-interval generator …… W3QVZ 122

DMM Buyer’s Guide<\/h3> – expert tells all …… McClellan 126

Triple Threat<\/h3> – Microlog’s RTTY Morse and ASCII system …… K3CMY 130

The Ultimate T-hunt<\/h3> – repeater jammer foiled again …… WB6JPI 136

Two Meter HT Survey<\/h3> – data on 21 rigs …… K5XY 142

Interrupts Made Easy<\/h3> – for 8080\/s-100 users …… WB6LOA 146

Use A Computer? Who Me?<\/h3> – yes you! …… WB2HJD 154

Bird Watching in BASIC Land<\/h3> – another use for your micro …… K6EW 156

Computers and the Real World<\/h3> – practical D\/a and A\/d conversion …… WlFZA 161

World’s Cheapest QSLs<\/h3> – BASIC program keeps your log too …… WA7VZR 166

The Long-term Effects of Working with ICs<\/h3> – learn the five warning signs …… WA2SUT\/nNN0ZVB 182

The Lady Saw Red<\/h3> – if the shoe fits …… WB4ZVZ 184

The Frugal Alternative<\/h3> – home-brew an HT charger …… W8FX\/4 186

PLL Techniques<\/h3> – a practical guide …… Earnshaw 188

Build A TTY Tester<\/h3> – works for TTL-compatible printers too …… K7YZZ 198

It’s A Ham’s World<\/h3> – show this one to a non-amateur …… K2HTO 210

Attention. Weather Watchers!<\/h3> – advanced circuitry for WEFAX processing …… Cawthon 218

Interchangeable Test Leads<\/h3> – individuality has limits …… K2MPJ 249

Happiness Is A Smart Scanner<\/h3> – mods for the PBM\/aWE FMSC-l …… K8JS 250

Tweaking Your Linear<\/h3> – the right way to tune it …… W5VSR 252

CB to 10<\/h3> – part XII convert a Kraco PLL rig …… W1PI 254

Tuned Circuits In Your Junk Box<\/h3> – making do with what’s on hand …… W3KBM 256

Support Your Local Fire Chief<\/h3> – hams and the safety services …… W1FYR 258

Improved Scanner for the VHF\/one plus<\/h3> – a $4.00 mod does it …… W7AAY 262

A Perfect Power Supply?<\/h3> – well …almost …… WB3BUU\/8\/k8UR 268

Mobile Security Blanket<\/h3> – remote control for older rigs …… WA1RTD 270

Further Adventures of the IC-22S<\/h3> – our hero gets offset flexibility …… W6WUT 274

Antenna Design: Something New!<\/h3> – controlled-current distribution …… W4FD W4ATE 282

Build An Audible Transistor Tester<\/h3> – it’s a CPO too …… WB7NZG\/dA1DB 291
\n
\n

73 Ham Radio Today Issue November 1978<\/a>
<\/h2>\n

Electro Sculpture<\/h3> – be a radio Rodin …… VP2DN 32

The SUMSUE Method<\/h3> – determining code speeds …accurately …… K1RH 36

The UART Gear Shifter<\/h3> – for multi-speed RTTY …… KB8CE 38

Silence Groaning Refrigerators<\/h3> – check your house wiring …… K4KI 42

Bargain Preamp<\/h3> – muliple uses for this one …… W5REZ 44

Murphy’s Masterpiece<\/h3> – the lost weekend …… WA6PPZ 48

How About Some Holm Shack Safety?<\/h3> – don’t be a statistic …… W7FGD 52

Head ‘Em Off at the (High) Pass<\/h3> – improved filter design …… WB6GNM 56

555 Basics- And More!<\/h3> – get to know this versatile IC …… WB4CEO 60

Educate Yourself<\/h3> – an almost painless method …… WB1AHL 64

Novel RTTY Autostart<\/h3> – we could write a book …… K2OAW 68

The Easiest Offset Ever<\/h3> – a treat for 2 …… K4GOK 74

The Chip Switch<\/h3> – a digital troubleshootmg triumph …… WB2QEL 78

Automatic Repeater Offsets<\/h3> – it’s all so logical …… N2YK\/wB2NYK 82

CB to 10<\/h3> – part XIII: the Lafayette Telsat SSB-75 …… DF1SP\/w2 86

The History of Ham Radio<\/h3> – part VII …… W9CI 90

Build An FM Tweaker<\/h3> – simple deviation meter …… W3QVZ 94

Another Surplus Treasure<\/h3> – convert the R-648\/aRR-41 receiver …… McClellean 96

Pffft -Zapped Again!<\/h3> – front-end protect your test equipment …… WA6THG\/kH6JSA 100

One Meter-many Jobs<\/h3> – an introduction to shunts …… Fletcher 102

Who Uses All Those Frequencies?<\/h3> – the competition for radio spectrum …… WB6JPI WB6HDB 104

MDS: What Is It?<\/h3> – and what’s in it for you …… Edwards 106

FM Calibration on a Budget<\/h3> – why pay more? …… W9HDA 108

Build the $80 Wonder<\/h3> – a deluxe frequency counter\/standard …… W3HB 112

Add-a-scanner<\/h3> – for any synthesized rig …… N2YK\/wB2NYK 116

CB to 10<\/h3> – part XIV: a Realistic PLL rig …… K0QLC 120

No More Excuses!<\/h3> – get on RTTY with this simple demodulator …… WB4MBL 124

The Junk Box Station<\/h3> – ham ingenuity does it again …… WA4DQN 126

R-X Bridge + Calculator = Vswr<\/h3> – antenna tuning without QRM …… WB5ILK 130

High Seas Adventure-ham Style<\/h3> – part II …… WA6FEI 136

“Look What Followed Me Home!<\/h3> – a PET of your very own …… Lilie 142

A Hex on Your 8223<\/h3> – space-saving magic …… Schneider 148

The Micro Maestro!<\/h3> …… K6EW 150

SSTV Meets SWTPC: Part 1<\/h3> – micro-enhanced pictures …… K6AEP 168

Squelchifying Cheap Receivers<\/h3> – junk-box project …… WA1PDY 182

Try FM On 29.6 MHz<\/h3> – no it’s not a CB channel …… WA7WYF 184

Build the Brute<\/h3> – unique heavy-duty power supply …… N9KV 186

The Multifunction Scan Can<\/h3> – another IC-225 goodie …… W1IBI W1HZH 192

Be A Weather Genius<\/h3> – eavesdrop on GOES …… WB8DQT 198

Happiness is a DMM Kit<\/h3> – Sabtromcs makes a gem …… W7AAY 208

Vintage Receiver Mods<\/h3> – new life or hamfest bargains …… W2OLU 210

Deep Dark Secrets of the TR-7500<\/h3> – exposing hidden talents …… WB9SEQ 212

The TTY Lifesaver<\/h3> – saves money too …… Sergo 216

Build the “Version Three”<\/h3> – simple RTTY TU does it all …… Colby 218

Heath’s GR-88 Gets Religion!<\/h3> – convert it to 2 meters …… W2AOO 222

Four Terminals Are Better Than Three<\/h3> – using the new voltage regulators …… W1SNN 226

CB to 10<\/h3> – part XV: a Realistic HT …… K5UKH 238

The Circuit Board Aquarium<\/h3> – no fish story …… WB9QZE 240

Build A Decent Dummy<\/h3> – no oil no light bulbs no hassle …… K4IPV 244

Who Needs Transistors?<\/h3> – you do! …… W5JJ 250

A Junk Box Load Simulator<\/h3> – for battery testing …… W5JJ 252

Blockbuster RTTY Article!<\/h3> – Selcal and W-r-u on a budget …… W9IF 254

Automatic Autopatch<\/h3> – safeguard your health …… W6GJS 266

Using Bargain Muffin Fans<\/h3> – a keep-cool idea …… K4SE 276

Loran-c as a Frequency Standard<\/h3> – is 3 cycles a week good enough? …… WA4EID 278

Ham Help!<\/h3> – a telephone aid for the blind …… N4AL 286

An Experimenter’s Delight<\/h3> – a lab bench with style …… WA1WLW 288
\n
\n

73 Ham Radio Today Issue December 1978<\/a>
<\/h2>\n

A DXer’s Dream Vacation<\/h3> – try sunny Montserrat …… WB6JPZ 30

Close Encounters<\/h3> – the eyes of Texans are upon them …… K8NQN 36

The Schizophrenic Triangle<\/h3> – a split-personality radiator …… WA4JTJ 44

From CW to Computers<\/h3> – a digital modulation primer …… N6RY 48

A 28 Cent Touchtone Mod<\/h3> – something for (almost) nothing …… W9CGI 56

Space Age Surplus<\/h3> – your own Saturn V? …… Endress Endress 60

An X-band Transceiver<\/h3> – more 10-gHz fun …… W1SNN 64

SSTV Recorder Controller<\/h3> – replaces your index finger …… K3JML 82

Receiver Diseases<\/h3> – and how to Cure them …… K4IPV 90

Autophasing for WEFAX<\/h3> – preserve your mental health …… Cawthon 96

The Lunch Counter<\/h3> – eat it up …… WA4PIN 105

Confessions of a Stripper<\/h3> – confirmed junkor tells all …… K5GNZ 114

Tuned Feeders and Other Good Stuff<\/h3> – who needs coax? …… W0VM 118

Build a Realistic S-meter<\/h3> – “you’re S9 + 40 OM!” …… DJ3NW 126

Wow! A Good Portable Receiver!<\/h3> – thanks Panasonic! …… WA2EJT 130

The XITEX Video Terminal<\/h3> – a quiet alternative to your Model 15 …… AH6AQ 132

Light Up Your Life<\/h3> – the 2036 glows digital …… WA4NUE 136

High Seas Adventure-ham Style<\/h3> – part III …… WA6FEI 142

Whither Microcomputers?<\/h3> – a pro looks ahead …… WB2HJD 148

SSTV Meets SWTPC: Part 2<\/h3> – micro-enhanced pictures …… K6AEP 152

A Multi-memory Morse Machine<\/h3> – using a Motorola micro …… WA8TIW 160

“This is Your Computer Speaking”<\/h3> – how to dial up your micro …… Sorrels 164

RTTY with the KIM<\/h3> – one more step …… VE1AKL 170

DX Delight<\/h3> – a do-it-all program …… WA4VQD N3NN 174

Big Max Attacks<\/h3> – it’s W2DU vs. K4KI in the battle of the bazooka …… W2DU 182

The Packet Radio Revolution<\/h3> – pioneers take note! …… VE2PY 192

This Voltage Standard Is Precise!<\/h3> – and makes calibration a snap …… WB6NTR 200

The 22S Goes Digital<\/h3> – add 7-segment displays …… KH6IEL 206

WARC ’79 Preview<\/h3> – showdown in Geneva …… WA9MZS 212

The “Flim-flam” Factor<\/h3> – another biased article …… WA2SUT\/nNN0ZVB 216

Build the Flexi-filter<\/h3> – a very active device …… W3QVZ 222

The Klassic Kilowatt<\/h3> – four 811As do it …… K4TWJ 226

Ham Radio Goes to School<\/h3> – 10-year-olds love it …… N2CF 230

What’s Your uF?<\/h3> – a six-digit answer …… K5BTV 234

Fail-safe<\/h3> – protecting repeater batteries …… WA7DPX 250

Code-practice Oscillators<\/h3> – an exhaustive report …… W6GXN 256

PCs Are Easy<\/h3> – step-by-step details …… VE3CGE 270

The Games People Play<\/h3> – why not hams? …… WB3EUG 274

An Improved HV Tube Socket<\/h3> – easy modification …… Miller 287
\n
\n

73 Ham Radio Today Issue January 1979<\/a>
<\/h2>\n

The Italian Freq Generator<\/h3> – from Bologna to you …… K7YZZ 24

Happiness is a WE-800<\/h3> – proud owner loves his Wilson …… K3JML 28

Explore the World of VLF<\/h3> – with this simple converter …… W3QVZ 32

The S.H.A.F.T.<\/h3> – special tuning gadget for sightless hams …… K5CW 34

A Remotely-tuned Matchbox<\/h3> – ultimate operating ease …… W4PSJ 38

Diodes of the Dead<\/h3> – eavesdrop on the great beyond …… K5JRN 44

Building an Economy Receiver<\/h3> – junk box here I come! …… WB8NEX 46

The ST-5 Plus<\/h3> – improvements on a favorite TU …… K5QY 50

Build a $10 Digital Thermometer<\/h3> – hundreds of uses …… McClellan 52

CB to 10<\/h3> – part XVI: a CW conversion …… W4GBB 56

Try a little KISS<\/h3> – you’ll love it …… K8AO 58

Autotrak II<\/h3> – chase OSCAR with ease …… W9CGI 62

The Twofer<\/h3> – double-duty IDer logic …… K3JML 78

Adam-12 Revisited<\/h3> – a scanner unscrambler …… N8AMR\/4 80

Digital RTTY Is Simple<\/h3> – easy as 01 10 11 …… WB5NYX 84

Take the Pledge<\/h3> – a no-compromise console …… K3MPJ 86

Two Meter Tone Alert<\/h3> – keep everyone on call …… WA3ENK 90

Sneaky Car Security System<\/h3> – an alarming article …… WB8SWH\/w8VL 94

Design-a-Notcher<\/h3> – automated filter values …… WA4HUU 100

The Cosmac Connection: Part 1<\/h3> – computertized CW …… VE3CWY 102

Noise Bridge BASICs<\/h3> – computer-optimized radiation …… N6RY 108

The Morse Master<\/h3> – convert your computer friends to hamdom …… WB9TNW 114

The MINI-mOUSE Key<\/h3> – perfect companion to the MINI-mOS keyer …… WA6EGY 120

One Step Further<\/h3> – PTTR instead of PTT …… Staff 124

Hooray for LC Filters!<\/h3> – simplest is sometimes best …… Ogushwitz 126

The Soft Touch Keyer<\/h3> – send CW with no moving parts …… WA3PKU 128

SOS! Ship in Trouble!<\/h3> – life and death on 20 meters …… W1BNN 132

Minicontests<\/h3> – get ’em involved! …… Stocking W0VM 138

Are Your Op Amps Opping?<\/h3> – try this IC helpmate …… W3KBM 139

Major League TT Controller<\/h3> – 15 digits 40 devices 100 bucks …… K3NCL 140

CB to 10<\/h3> – part XVII: SBE and Pace rigs …… K3SZN 156

Electronics Education by Mail Order<\/h3> – successful student reports …… N6UE 172

Time-domain Retlectometry<\/h3> – to check out your transmission lines …… Staff 178

High Seas Adventure -ham Style<\/h3> – part IV …… WA6FEI 184
\n
\n

73 Ham Radio Today Issue February 1979<\/a>
<\/h2>\n

Five-chip Auto IDer<\/h3> – in case you forget …… Bartholomew 28

The Vacationer<\/h3> – B&W’s portable antenna …… WA2ALT 29

Tone Decoder Improvements<\/h3> – another step toward perfection …… WA1LMV 30

The All-wrong Power Supply<\/h3> – works in spite of itself …… WA3EEC 32

The Hardhearted Rf Detector<\/h3> -insensitive to harmonics …… N4ES 33

Custom-designed Power Supplies<\/h3> – try the 723 …… K2GEJ 34

A Touch of Class<\/h3> – nifty $35 operating console …… WA4CUD 39

How To Bury Coax<\/h3> – the garden cultivator technique …… W4MEA 40

Mobile Antenna Ingenuity<\/h3> – cheap HF radiators …… WA8ATE 42

Impedance and Other Ogres<\/h3> – another look at swr …… Staff 46

The Active Filter Cookbook<\/h3> – review of Lancaster’s treatise …… VE2BVW 50

A Rock-solid AFSK Oscillator<\/h3> – hooray for stability! …… WB4MBL 52

Pulser Plus<\/h3> – a one-shot with more …… VE2BVW 54

Oh My Poor Quad!<\/h3> – measuring wind speed …… K2CL 56

A Self-contained Fully-automated Transistorized Fuse Tester<\/h3> – amaze your friends …… G3TAI 58

Don’t Get Burgled!<\/h3> – build this simple alarm …… Fletcher 60

Power x 2<\/h3> – dual auto batteries …… Miller 61

Experimenting with Tones<\/h3> – fun with functions …… W2FPP 62

Synthesize Your Ash Tray<\/h3> – article for non-smokers …… WB9VWM 64

Attention Satellite Watchers!<\/h3> – a solid-state monitor for GOES …… WB8DQT 66

Batteries Dead?<\/h3> – take preventative measures …… Staff 78

How to Nab a Jammer<\/h3> – another use for 220 …… WB0CMC 80

This Station Plays Beautiful CW<\/h3> – with a Morse keyboard …… WB9WRE 84

The Cure for Migraines<\/h3> – a low-pass CW filter …… Harper 92

An 8080 Repeater Control System<\/h3> – part I an overview …… N3IC 94

The Cosmac Connection: Part 2<\/h3> – meeting Mr. Morse …… VE3CWY 106

Learning the Code<\/h3> – a better way …… Waldie 110

Books for Beginners<\/h3> – you have to start somewhere …… WA7NEV 116

The 2 Meter ECM Caper<\/h3> – James Bond move over! …… W2JTP 118

“I Love My Ten-tec!”<\/h3> – a look at the 540\/544 …… WA0JIH 120

A $5 Phone Patch<\/h3> – the darn thing really works …… WA6RJK 122

The Filcher Foiler Revisited<\/h3> – vehicular protection …… Davis 136

Build An Economy Zener Checker<\/h3> – versatile test rig …… W4RBL 137

Alaskan Adventure<\/h3> – stalking the elusive KL7 …… WB5WDG 140

The Last DXpedition<\/h3> – “QTH hr is Purgatory” …… K3FDL 142

An Audio Morse Memory<\/h3> – got a tape recorder? …… WB6WQN 144

The Amazing Active Attenuator<\/h3> – can you find a use for it? …… VE2BVW 146

A Single IC Time Machine<\/h3> – amazing clock …… K6SK 148

Car Battery Charger<\/h3> – junk box special …… W1DWZ 156

Immortality for Vacuum Tubed<\/h3> – build a solid state tube saver …… K5KXM 160

The Hot Mugger X1<\/h3> – coffee drinkers rejoice …… WB9QZE 163

Build the Mini-probe<\/h3> – its only logicical …… Rister 164
\n
\n

73 Ham Radio Today Issue March 1979<\/a>
<\/h2>\n

RAM Scan Your KDK<\/h3> – amazing flexibility for $30 …… WB2JHN 26

The NCX-match<\/h3> – build something useful …… WA6NCX\/l 32

The Memorizer Goes to MARS<\/h3> – expanded frequency coverage …… KH6JMU 38

Build a Hybrid Capacity Meter<\/h3> – digital circuitry analog display …… WA4HUU 40

Power Plus!<\/h3> – a 20-amp adjustable regulated dc supply …… W6YUY 42

Reaching for the Top<\/h3> – why stop with the General ticket? …… N1PL 46

Universal Alarm Circuit<\/h3> – detects heat light moisture… you name it …… Staff 50

Exorcise Those Unwanted Frequencies<\/h3> – try coaxial stub filters …… Staff 54

10 cent: Mod for the 225<\/h3> – extra channels for $.00455 each …… K5XT WB5SXT 56

The 10-gHz Cookbook<\/h3> – monster article …… K6IQL 60

Legalized ASCII! The Quad-s System!<\/h3> – even the FCC approves …… W2FJT 80

Brew Up a Beam for Two<\/h3> – double-barreled design …… VE3BSM 88

Keyboard Serialization<\/h3> – when parallel isn’t enough …… Bosen 90

Ignition Noise and 2m FM<\/h3> – one ham’s cure …… W3QG 94

An 8080 Repeater Control System<\/h3> – part II: hardware …… N3IC 100

DX Fantasy<\/h3> – a moment in the sun …… VE3FLE 109

Try a Log Periodic Antenna<\/h3> – with a computerized design …… WA1ZAC 110

New Coax Cable Designations<\/h3> – watch for them …… W5JJ 112

The Micro Magic Pi Designer<\/h3> – figure networks with a minimum of fuss …… Boelke 114

A Better Micoder<\/h3> – no more battery woes …… KG6JIF 116

Winning the QSO Name Game<\/h3> – sure beats 3 x 5 cards …… WA3MWM 118

A New Approach To Nicad Care<\/h3> – charges up to ten at a time …… W0LM 119

On the Razor’s Edge<\/h3> – it could happen …… W5WY\/l 122

Tips for VOM Users<\/h3> – current topics …… Staff 128

Chamber of Horrors<\/h3> – a true story …… WB6WFI\/lB 144

An Intelligent Scanner for the HW-2036<\/h3> – it’s programmable …… WA9TAH 150

Trickle-cost Trickle Charger<\/h3> – junk-box project …… W5JJ 163
\n
\n

73 Ham Radio Today Issue April 1979<\/a>
<\/h2>\n

A Speedy Spinner Mod<\/h3> – 5 000 000 Hz per minute …… W2RZJ 40

A Variable Bandpass Active Filter<\/h3> – extremely simple design …… W3KBM 42

What About an Active Antenna?<\/h3> – here’s a look at one …… W5JJ 44

Help for the Hearing-impaired<\/h3> – don’t miss another phone call …… W4VRV 56

Try a Bi-loop Antenna<\/h3> – gets you coming and going …… W7CJB 58

Simple RTTY IDer<\/h3> – uses five ICs …… G3MEJ 60

Tales of Speech Processing<\/h3> – including a practical design …… WA4JHS 62

PTT For Ten-tec’s Linear<\/h3> – no more “aahhh” and “uuhhh” …… DA1NF\/wD6AXL 68

Disaster Preparedness<\/h3> – it can happen here …… N4AL 74

Comfort Mods for the Mark II<\/h3> – invert your duck …… WA4HUZ 78

An 8080 Repeater Control System<\/h3> – part III: software …… N3IC 82

The Micro Duper<\/h3> – for small contests …… WB2MIC WA2RZR 96

An 8080 Disassembler<\/h3> – written in BASIC yet! …… Raskin 98

Antenna Bonanza for 10<\/h3> – CB is good for something …… W6LVT 102

Lightning!<\/h3> – a case history …… W8HXR 104

Build a CW Memory<\/h3> – fun! …… WA1ZFW 106

Wire-wrap on a Budget<\/h3> – home-brew your tools …… K4LPQ 108

Compact Continuity Tester<\/h3> …… Miller 116

Who Needs SSB?<\/h3> – using your FT-101 on 10m AM …… K8JS 118

12 Volts 5 Amps 3 Terminals<\/h3> – what could be simpler? …… WA4FYZ 120

Has Anyone Seen OSCAR 7?<\/h3> – find it with your SR-56 …… Mayse 122

Tricky QSK<\/h3> – a treat for CW …… Blasco 124

Make Life Easier<\/h3> – with a workbench speed control …… W4CQQ 126

The Heath\/kenwood Connection<\/h3> – RIT for the 104 …… WB5QGI 128

An 8-element All-driven Vertical Beam<\/h3> – super array for DX …… W1DBM 132

CW with a Nordic Flair<\/h3> – new life for the Viking I …… K2VJ 146

House Hunting for Hams<\/h3> – caveat emptor! …… WB9URA 150
\n
\n

73 Ham Radio Today Issue May 1979<\/a>
<\/h2>\n

CB to 10<\/h3> – part XVIII: several PLL rigs …… K9PS 30

PROM IDer for Longer Callsigns<\/h3> – don’t be caught short …… W4VGZ 34

The W7GAQ Key Collection<\/h3> – 250 museum masterpieces …… K7NZA 38

Proper FM Transceiver Adjustment<\/h3> – good club project …… VE3AVY 44

Dual-band Smokey Detector<\/h3> – Super Scooper does it all …… W1SNN 48

The DXer’s Secret Weapon<\/h3> – costs you nothing …… W6BKY 64

Foiling The Mad Kerchunker<\/h3> – frustrate him with this circuit …… K5MAT\/n5EE 66

Trends in Surplus<\/h3> – it’s not what it used to be …… WA2SUT\/nNN0ZVB 68

An 8080 Repeater Control System<\/h3> – part IV: addenda …… N3IC 72

RTTY Transceive for the KIM-1<\/h3> – requires video terminal and AFSK generator …… WB8VQD W83GCP 78

Keyboard Konvenience<\/h3> – simplify entry of BASIC programs …… WA7NEV 86

DXCC in One Sitting<\/h3> – know your prefixes …… WA4FYZ N2CR 88

A Low-cost Circuit Board Holder<\/h3> – price tag: 45 cents …… Steele 92

User Report: the IC-245<\/h3> – good things come in small packages …… W8YA 96

The History of Ham Radio<\/h3> – part VIII …… W9CI 100

Improving the Sabtronics 2000<\/h3> – make a good DMM even better …… N8AMR\/4 138

Turn Signal Timeout<\/h3> – eliminates two-wheeled embarrassment …… KlOTW 142
\n
\n

73 Ham Radio Today Issue June 1979<\/a>
<\/h2>\n

Add Digital Display for $50<\/h3> – 100-hz accuracy …… K4IQJ 28

High-performance Receiver Add-ons<\/h3> – aren’t ICs wonderful? …… W5DA 32

A Solution to the Home-brew Housing Shortage<\/h3> – building a box for your next project …… W0IHI 38

How Do You Use ICs?<\/h3> – part XI …… WA2SUT\/nNN0ZVB 42

Customize Your HT144B<\/h3> – some nifty mods …… W2KGV 46

Ultra-simple CMOS Logic Probe<\/h3> – a single IC does it all …… WB9PHM 50

“The Voice of Wolf Creek”<\/h3> – the KGCX story …… W6CK 54

CB to 10<\/h3> – part XIX: Lafayette SSB rigs …… WB0LLP\/5 60

At Last! A Really Simple Speech Processor<\/h3> – 5 dB for $10 …… W9UT WB9OEC 64

New Life for Tube-type Dippers<\/h3> – simple circuit reads out on your frequency counter …… K4LJA 66

You Ought To Be in Pictures<\/h3> – here’s what the guys on 14.230 are doing …… K4TWJ 68

How to Toot Your Own Horn<\/h3> – and stay on key …… WA4CLG 72

A Junk-box HT Charger<\/h3> – power to the portables …… WB9JLY 76

Protect Your Home-brew Panels<\/h3> – no more spraying …… VE2BVW 80

Now You Can Possess Instant Recall<\/h3> – don’t tell ’em the computer helped …… WB5UTJ\/n5AUX 86

Calcu-trip<\/h3> – a program for the open road …… Lutz 92

Charging Up the WE-800<\/h3> – a convenient alternative …… K7CMS 94

Where Have All the kHz Gone?<\/h3> – are the ham bands an endangered species? …… W8GI 96

The Ramsey 2m Amp Kit<\/h3> – has a high Watts-per-dollar ratio …… N8RK 100

An Improved Display for the TR-7400A<\/h3> – very sensible …… WA6AVJ 108

Inexpensive Scope Tuner<\/h3> – “budget here is QRP OM” …… VE7CGK 110

The Resistance Substitution Box<\/h3> – a ham’s forgotten friend …… WA2SUT\/nNN0ZVB 112

Vodka Amongst the Penguins<\/h3> – hamming with the Russians in Antarctica …… W1FK 126

Protect Yourself with a GFI<\/h3> – before it’s too late …… WA6PEC 138

Poor Man’s CW Memory<\/h3> – works even with a straight key …… WB0RYN 142

Power Up for Mobile Operation<\/h3> – adding an auxiliary battery …… WB9SKX 146

Project Update<\/h3> – doubled capacity for K2OAW’s repeater IDer …… K2OAW 148
\n
\n

73 Ham Radio Today Issue July 1979<\/a>
<\/h2>\n

A Visit to Antenna Specialists<\/h3> – Wayne tours the test range …… W2NSD\/1 30

Secrets of Guyed Towers<\/h3> – put ’em up and keep ’em there …… WB3BQO 34

Death-defying PL Mod for the KDK 2015<\/h3> – not for the squeamish …… W8GQL 40

Feed-horn Mounting Made Easy<\/h3> – solution to a pesky problem …… WB8DQT 44

Antenna Tuning Joy Revisited<\/h3> – remember the Tektronix 190B? …… W9CGI 48

Modern Solid-state Equipment Design: A Better Way<\/h3> – sorry tube fans …… W4RNL 52

Shortened Antennas for 75 and 80<\/h3> – designs which fit your QTH …… W4AEO 58

Build This Simple 220 Yagi<\/h3> – 3 elements 6 dB …… N8AJA 66

Beware of the Dreaded Phantom Ground<\/h3> – exorcise those antenna gremlins …… WA2SUT\/nNN0ZVB 68

A Close Encounter With Voyager I<\/h3> – the W6VIO story …… K6PGX 70

Giant Wire Antennas<\/h3> – impress the neighbors …… WD8CBJ 72

Microcomputer RTTY… a Software TU<\/h3> – use your 8080 and very little else …… N1AW 78

Baudot Hard Copy For Your-sWTPC<\/h3> – noisy but cheap …… K4HBG 84

The 9-element Duoband DX Attention-getter<\/h3> – when you call they listen …… K4FK N4OG 92

Here’s a “Twist”<\/h3> – an OSCAR antenna with a difference …… K4TWJ 96

A Fortified 2m Whip<\/h3> – won’t bend in the breeze …… W9AMM 98

Ageless Wonder: the Collinear Beam<\/h3> – sure beats a dipole …… W1FK 100

Three Baluns for a Buck<\/h3> – go find yourself a junked TV …… W6SJQ 102

So You Want to Raise a Tower<\/h3> – do it safely do it right …… WA7DPX 104

The Revolutionary Organic Antenna<\/h3> – product of NASA research …… Gaddie 118

DDRR Dipole for VHF<\/h3> – experiment! …… W6VX 126

Tennamatic: An Auto-tuning Mobile Antenna System<\/h3> – works allof 40 and 75 …… W6TWW 132

Add Solid-state Braking to the T2X<\/h3> – a worthwhile improvement…… WB2DTY 140

Compact Beams for 20 or 15<\/h3> – build these-when your quad bites the dust …… W8HXR 144

“Weeping Willow” Vertical for 40<\/h3> – go out on a limb and build one …… WA6OYS 150

Marine-band Activity<\/h3> – a complete guide …… WA2KBZ 154
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73 Ham Radio Today Issue August 1979<\/a>
<\/h2>\n

You Can Watch Those Secret TV Channels<\/h3> – a complete MDS receiving system …… K0JB K0FQA 32

Simple Dual-voltage Supply<\/h3> – power for many projects …… W4VCZ 44

Bargain Zener Classifier<\/h3> – Novice project …… WD8AAM 46

What the Hell is a Decibel?<\/h3> – 1\/10 of a bel of course …… WA5EBB 48

Frosting for the FT-901DM<\/h3> – simple improvements for Yaesu’s superb performer …… K4TWJ 50

Mods for the Mark<\/h3> – desirable extras for your Wilson HT …… K9EID 52

The History of Ham Radio<\/h3> – part IX …… W9CI 56

Add-on Keyboard for Your Keyer<\/h3> – the “a la carte” design …… K4BZD 60

Little Extras for the Century 21<\/h3> – easy add-ons …… KN4JJG 64

The Many-talented 723<\/h3> – how can regulated supplies get much simpler? …… WB0SKX 68

One-chip Tone Decoding<\/h3> – how simple can it get? …… WB0VGI 72

Computerize That Mailing List<\/h3> – club secretaries this is for you …… WB5UTJ\/n5AUX 78

More Power to You<\/h3> – 12-v supply has current limiting over-voltage protection the works …… K9MLD 90

Hit the Panic Button!<\/h3> – a kill-switch system protects you and your ham shack …… AA6C 94

A Powerful Plus For Your TR-2200A<\/h3> – improved supply\/charger is a first-rate addition …… W6RON 96

Build a Wide-range Rf Resistance Bridge<\/h3> – with a multitude of uses …… K4KI 100

Try the Potted J<\/h3> – a 2m antenna impervious to the elements …… Staff 106

Testing the DSI 3600A Frequency Counter<\/h3> – as much accuracy as you’ll ever need …… WA6ITF 108

The Tri-polarlzed VHC Antenna<\/h3> – should be a killer for VHF …… K8UR 116

The One-Note Pipe Organ<\/h3> – cw never sounded sweeter …… WB7CMZ 120

A Better Heathkit “Cantenna”<\/h3> – improved metering circuit for an old standby …… W5ZG 124

The 80 Meter Coax L<\/h3> – compact design really works …… AA4AG\/dA1KV 126
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73 Ham Radio Today Issue September 1979<\/a>
<\/h2>\n

Power Line DXCC (Distant Control Circuit)<\/h3> – the ac lines are a already there… why not use ’em for remote control? …… W9CGI 34

Blueprint for Biofeedback Experimentation<\/h3> – fertile ground for pioneers …… WD5BNL 42

The History of Ham Radio<\/h3> – part X …… W9CI 44

Maximum Security for the 22S<\/h3> – remote control puts your Icom in the trunk …… K8KW 48

The Big Blinker<\/h3> – a visual signal for the deaf …… AD5X 50

Morse Converter for DMMs<\/h3> – super gadget for blind hams …… WA6AXE\/3 52

How to Home-brew Your Own Crystal Filters<\/h3> – the series-string method …… Staff 56

Four Bands on a Bamboo Pole<\/h3> – try a Chinese vertical slanter on 10 through 40 …… W0VM 60

The Triton IV Goes QRP<\/h3> – simply and efficiently …… W1FK 64

Experimenter’s Corner: The MM5369N<\/h3> – how many uses can you find for this one-chip crystal oscillator? …… Patten 68

Digital Readout Rotator Control<\/h3> – can the microcomputer connection be far behind? …… K8TMK 72

Build the KIM Keyer<\/h3> – with a 3-message memory …… K0EI 80

No More TR5-80 Cassette Woes<\/h3> – E-Z loader does the trick …… WA9PUL K9POX 96

The Incredible Shrinking Transceiver<\/h3> – build it on two tiny PC boards …… K4DHC 100

In Quest of Perfect Break-in<\/h3> – well almost perfect …… WB7CMZ 106

The Amazing Audio Elixir<\/h3> – this limiting amp is a cure-all …… N6WA 116

No More Rotary Switches<\/h3> – gadget freaks will love these solid-state replacements …… WA2FPT 118

Confessions of a Teenage HFer<\/h3> – the world between channel 40 and 28 MHz …… Peter 122

70-wall Shoes for the IC-502<\/h3> – put some punch in that 6m signal …… WA1PDY 128

The Big Bopper<\/h3> – a 5-band phased vertical array …… W0VDJ 136
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\n

73 Ham Radio Today Issue October 1979<\/a>
<\/h2>\n

Extremely Low Frequency Radiation: Cause for Worry?<\/h3> – studies on ELF are inconclusive but the battle is joined …… WB2NEL 34

An LED Display for the HW-2036<\/h3> – eliminates unwieldy thumbwheel switches …… WA4BZP 36

It’s a Wattmeter… It’s an Swr Bridge.. It’s Swattmeter!<\/h3> – a super home-brew project …… K4LBY 42

The Double-sawbuck QRM Annihilator<\/h3> – 3-iC circuit yields perfect CW …… WA5QAP 50

Center Insulator for your Next Antenna<\/h3> – do it yourself with PVC …… AC5P 52

Another Approach to Repeater Control<\/h3> – uses 7516 chip for low parts count …… W7JSW 54

Yes You Can Build this Synthesizer!<\/h3> – keep your crystal rig …… WB2BWJ 58

Analog Telemetry Techniques<\/h3> – while designed for medical signals these circuits work with any analog data …… K4IPV 68

The MICROSIZER: Computerized Frequency Control<\/h3> – a synthesized vfo replacement for most HF rigs …… N4ES W4BF 74

CW Fans: Give Superior Selectivity to your Atlas Rig<\/h3> – this mod uses an inexpensive MFJ filter …… WB9WWM 90

A Sensible CMOS TT Decoder<\/h3> – presented by popular demand …… N6WA 98

DTMFR for your Repeater<\/h3> – state-of-the-art TT decoding …… K4ALS 102

Freedom Fighters on Forty<\/h3> – SWLing the anti-castro clandestines …… KA5M 108

The Miserly Mobile PVC Special<\/h3> – radiates a very economical signal …… AA4RH 112

FSK Fix for the 820S<\/h3> – the RTTY relay remedy …… W1PN 114

Einstein Was Wrong!<\/h3> – this story has a Mobius twist …… Phenix 116

An 8-bit DPDT Digital Switch<\/h3> – many uses …… W1SNN 130

Get a Piece of The Rock<\/h3> – a DXpedition to Gibraltar …… W9JVF\/ZB2CS 136

Easy-to-build 220 Transverter<\/h3> – simple hookup to any synthesized 2m rig …… WA7SPR 142
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73 Ham Radio Today Issue November 1979<\/a>
<\/h2>\n

New Rig for 10 FM<\/h3> – a review of the Comtronix FM80 …… K4TWJ 38

The Black Art of Antenna Design<\/h3> – shedding some light on the workings of vertical whips …… Reynolds 40

Introducing the 2m\/220 Connection<\/h3> – give crossband operation a try with this inter-connection scheme …… WB4HXE 48

A Fresh Start for your Old Tx<\/h3> – modernize it with grid-block keying …… KE4Y 52

An Inflation fighter for 220<\/h3> – join the fun inexpensively …… WA3HWG 54

Building Long Yagis for UHF<\/h3> – some pitfalls to avoid …… W8DMR 56

Working with FETs<\/h3> – part I …… WA2SUT\/nNN0VB 60

The MARC Success Story<\/h3> – your club can do it too! …… K9EID 64

Want to Upgrade? Take a Tip from a Ham Who Did!<\/h3> – previewing the new code test …… KB8FC 66

A Microwave Primer<\/h3> – waveguides x-band and other fun stuff …… W1SNN 68

CB to 10<\/h3> – part XX: converting the Royce 1-655 …… N8AMR 72

Something New: the MVM<\/h3> – “most versatile meter” measures capacitance and frequency …… Ogushwitz 74

Amplify Your 6-meter Fun<\/h3> – a cheap but effective linear …… N4QH 80

CB to 10<\/h3> – part XXI : the Johnson Viking 352 …… WA6OYS 82

Exploring Uncle Sam’s Bookstore<\/h3> – what’s for you at the GPO …… WB3DRF 84

Computerized Slow Scan Revisited<\/h3> – further enhancements for the K6AEP system …… K6AEP 90

Son of Keycoder<\/h3> – an even Slmpler CW typewriter …… W4RNL 106

Sloppiness will Get You Nowhere<\/h3> – organize your coax …… WA5TDT 116

The Satellite TV Primer<\/h3> – thousands watch satellite TV every day here ‘s how they do it and what they see …… W5KHT 120

A Three-digit Timer for TTL Illiterates<\/h3> – c’mon tube fans give it a try …… K3VTQ 136

Sound for the CMOS Logic Probe<\/h3> – keeps your eyes on your work …… WB9PHM 138

External Relay Control for Converted CBs<\/h3> – switch anything with this setup …… W5JJ 140

Preserve Your Sanity with this Midland 509 Mod<\/h3> – why put up with rotten noises? …… WA6MPG 144

Touchtoning Your Memorizer<\/h3> – Yaesu’s made it easy …… AD1B 146

The Small But Mighty Arboreal Aerial<\/h3> – tree-hanging tri-band vertical …… K5JRN 148

What Do You When Your Rotator Dies!<\/h3> – you fix it like this …… W5JJ 149

Beams vs. Linears: Which Should You Buy First?<\/h3> – get the most bang for your buck …… N4OE 156

The Chicken Delight Beam<\/h3> – a tasty morsel for 10 …… K8SD 158

The TR-7500 Goes Inverted<\/h3> – see you on the flip-flop …… WA2JKN 160

Ready for the New Repeater Subband?<\/h3> – your FT-221R can be …… WA6FWQ 162

“Hey! That Sounds Like .01 uF!”<\/h3> – intended for the blind this audible multitester is great for everyone …… W4KIX W4RYY 170

The W4HCY Antenna System<\/h3> – give this new design a try …… W4HCY 178

A 3-band Mast-mountable Miniquad<\/h3> – a quad need not be monstrous …… WA6UHU 182

Bargains in Remote Antenna Switches<\/h3> – watch for these surplus gems …… W5JJ 185

A No-Nonsense Operating Table<\/h3> – basically it’s a flat surface on legs …… Anderson 186
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73 Ham Radio Today Issue December 1979<\/a>
<\/h2>\n

New Product: Swan’s Astro 150 SSB Transceiver<\/h3> …… WB8BTH 32

Low-cost Receiver for Satellite TV<\/h3> – this modular design uses readily available technology …… N6TX 38

A Simple 2m\/10m Crossband Repeater System<\/h3> – work the world with an HT! …… K9EID 44

Audio Booster for Mil-surplus Receivers<\/h3> – a must for headphone haters …… McClellan 50

Working with FETs<\/h3> – part II : experiments with gain and supply voltage …… WA2SUT\/nNN0ZVB 54

Build this $50 Mini-counter<\/h3> – three-iC design goes to 135 MHz …… McClellan 58

A Versatile variable Active Filter<\/h3> – dc switching and 8-pole response make this one a winner on RTTY or CW …… WA8HEB 66

Variable Tuning for WEFAX Receivers<\/h3> – why be rockbound? …… N6TX 70

Ham Radio Marriage Manual<\/h3> – a YL and her understanding spouse …… WB5YVE 76

The Space-saving Square Vee Antenna<\/h3> – a directional radiator for cramped quarters …… W7DJB\/6 80

License Upgrading -a Plan of Attack<\/h3> – you need not fail! …… WB2RVA 84

Muffin Fan Mania!<\/h3> – a compendium of knowledge about electromechanical air movers …… WA6NCX\/1 88

Are Repeaters Ripping Us Off?<\/h3> – some thoughts about open access to scarce frequencies …… KB2JN 92

My TR5-80 Is Here… Now What?<\/h3> – first steps in programming your computer …… W3KBM 96

Teaching Your Micro to Count<\/h3> – two methods for adding counter capability to your 6502 machine …… K6EW 104

Operation Santa!<\/h3> – spread holiday cheer with this super club project …… WD8LPN 118

Tools and Techniques for Wire-wrapping<\/h3> – an excerpt from 73’s new book …… W6SWZ 126

Working with Transistors<\/h3> – useful knowledge begins where gobbledygook ends …… WA2SUT\/nNN0ZVB 132

A Digital Clock with Analog Readout<\/h3> – this is progress? …… W9IEA 138

Turn Off Repeater Windbags<\/h3> – HT mod brings welcome relief …… WD5HYQ 144

Build a $5 Coax Switch<\/h3> – why pay more? …… W8HXR 146

Hamdom’s Evangelical Crusade<\/h3> – born-again ops arise! …… WB8TCC 148

The Memorizer Flies Inverted<\/h3> – something Yaesu never told you …… W1WUO 150

Double-duty Decoder Project<\/h3> – listen to SCA and tune in RTTY …… WA1UFE\/5 152

Build a Simple HT Charger<\/h3> – doubles as a 12-v supply …… W6SMJ 158

Do-it-Yourself Carrying Case for Wilson HTs<\/h3> – save $14.88 …… K2GMZ 160

Come On In- The Viewing Is Fine<\/h3> – an update on trends and developments in SSTV …… K4TWJ 168

Rack ‘Em Up<\/h3> – glass jars and orange crates are “where it’s at” for parts storage …… VE2BVW 172

Gadzooks! A variable 0-260 V Ac Supply!<\/h3> – junk-box delight …… WB8JCQ\/lU1AKO 174

Scrounger’s Special: Used Dental Tools<\/h3> – your DDS throwaways make dandy PCB drills …… WA7OYX 176

First Look at Latest Radio Laws<\/h3> – the official work …… KB5AO 188

The Induction Relay: Self-powered Switching<\/h3> – this unusual actuator doesn’t require a separate control voltage …… K6DZY 192

The Further Adventures of Keycoder<\/h3> – simplified wiring for the toroidal cores …… AD9K 196

All About Ground Rods<\/h3> – getting connected to Mother Earth …… Staff 200
\n
\n

73 Ham Radio Today Issue January 1980<\/a>
<\/h2>\n

NBVM: Dawn of an Era or Promotional Hype?<\/h3> – the performance and politics of Narrow Band Voice Modulation …… N8RK 30

Frequency Counter Survival Course<\/h3> – use that gadget wisely …… McClellan 36

DX with a Difference: the Utility Stations<\/h3> – when the ham bands get frustrating give SWLing a try …… WA3EOP 40

How to Write a RTTY Program<\/h3> – machine language is easier than you think …… WA4FMZ 46

The Perfect Morse Machine<\/h3> – send and receive CW with a dedicated micro …… WA5VQK 53

Microcomputers and Your Satellite Station<\/h3> – part 1: calculating orbital crossing data …… WB8DQT 63

A Brasspounder Improves Heath’s HR-1680<\/h3> – add a crystal CW filter bfo noise blanker and more …… KA5N 76

The Dollar-saver DVM<\/h3> – 3 1\/2- digit unit features autopolarity auto-zero and a $30 price tag …… McClellan 83

Personalize Your Repeater with a Voice ID<\/h3> – low-cost design uses 8-track decks …… K9EID 92

The Nearly Perfect WE-800<\/h3> – add an on-board charger a TT pad and …… K1OTW 96

How to Make Your Own Crystal Filters<\/h3> – requires considerable patience but very few bucks …… Staff 98

The Procrastinator’s Special: A Simple Six-band Antenna<\/h3> – this 10-160 end-fed vee goes up in a jiffy …… W6TKA\/0 106

They Don’t Make ‘Em like They Used To<\/h3> – home-brewing a hard-to-find neutralizing cap …… W2OLU 108

The Europa-b Two Meter Transverter<\/h3> – work OSCAR and 2m SSB with this British import …… G3ZCZ 110

Zero In on Zero Beat<\/h3> – an easy-to-make vernier for your tube-type oscillator …… W2OLU 112

CB-to-10 FM<\/h3> – best conversion yet? …… K1DCS N1XN W1WRO\/n2XN 117

Home-brew Holders for Icom Portables<\/h3> – keeps your IC-502 -202 or -215 on the level …… KH6IAA 131

Catch You on the Flip-flop<\/h3> – add a handy repeater reverse switch to your Memorizer …… K7ACN 132

Personality Plus for your Repeater<\/h3> – this low-budget voice IDer will really wow ’em …… K9EID 136

A Better Overvoltage Protection Circuit<\/h3> – the original was good …this version is better …… W7RXV 140
\n
\n

73 Ham Radio Today Issue February 1980<\/a>
<\/h2>\n

CB-to-10 FM Continued<\/h3> – another way to join the fun on 29.6 …… WB2EQG 42

Sunspot Predictions for 1980<\/h3> – whither propagation? …… WA3NKP 47

An End to Dials and Meters?<\/h3> – nope … but discrete LEDs make an interesting substitute …… Staff 50

The Paper the Station and the Man<\/h3> – a brief history of the New York Times radio stations …… W3CFC 54

QRP from Canton Island<\/h3> – proving all things are possible …… KH6GB 63

In Search of Power line Interference<\/h3> – how to find it and get it stopped …… W4PZV 66

Hard Copy from your Xitex Terminal<\/h3> – when a video display isn’t quite enough …… W5SBL 70

Excavation Litigation<\/h3> – don’t dig a hole without your lawyer …… Hecht 72

Noise Rejector II<\/h3> – an exciting sequel …… WB6ZYK 74

Trouble-free ID Timer<\/h3> – for repeaters …… WA8HEB 76

So You Want to Build a Beacon?<\/h3> – here’s how …… K9EID 78

Working with FETs<\/h3> – part III: the source follower …… WA2SUT\/nNN0ZVB 82

Microcomputers and Your Satellite Station<\/h3> – part II : ground station antenna bearings …… WB8DQT 86

Design Practical PLL and Timer Circuits<\/h3> – program generates standard R and C values for 567s and 555s …… N2RG 92

DUPECALL … for Your Next Contest<\/h3> – let your SWTP do the duping …… K4TSY 96

Add ‘Em Up: An IC-22S Programmer<\/h3> – select a frequency by adding the settings of three switches …… AA4RM 103

The Oscilloscope Survival Course<\/h3> – the finer points of scope usage …… McClellan 106

6m Fun with the FT-625RD<\/h3> – six is hot so why not? …… W6OJF 114

Albert and his Momentous Theories<\/h3> – a layman’s look at Einstein …… Lutus 116

Go-cart<\/h3> – wheels for your test equipment …… W4MEA 134
\n
\n

73 Ham Radio Today Issue March 1980<\/a>
<\/h2>\n

Good-bye to Autopatch Hassles<\/h3> – low-cost remedies to common problems …… WB2LEI\/4 30

Baudot-aSCII Converter Follow-up<\/h3> – add a FIFO buffer for typing ease …… VE4YD VE4CM 34

CB to 10<\/h3> – part XXII: more talk power for the TRC-11 …… N4APN 38

The L With It<\/h3> – an alternative to the variable inductor …… K4KI 40

Future Rig and Rigamarole<\/h3> – are you ready for faster-than-light propagation? …… W6HDM 44

Gone But Not Forgotten<\/h3> – supermods for the HW-2021 …… AD5X 48

The History of Ham Radio<\/h3> – part XI …… W9CI 54

CB to 10<\/h3> – part XXIII: the Sears Roadtalker 40 …… W6SZS 58

Neat Readout for the 2036<\/h3> – displays frequency on S-meter face …… K3GRX 62

Modernize That Boat Anchor!<\/h3> – older tube rigs are more fun when you give them the solid state treatment …… AD5X 66

Ham Shack Numerology<\/h3> – a gentle introduction to electronic math …… W6HDM 70

COMPULOG: A Multi-purpose Record Keeper<\/h3> – whither the paper logbook? …… WA1ZSE 74

Computer System I\/o Interface<\/h3> – handles RS232 20-mA loop and KC Standard conversions …… VE3CAF 78

Number Fun on your Micro<\/h3> – explore mathematical curiosities with your TRS-80 …… W3KBM 80

Baudot Message Formatter<\/h3> – In BASIC …… W6RLL 82

Lab-quality Hi I Supply<\/h3> – part I …… McClellan 88

A Do-it-Yourself Speech Compandor<\/h3> – let’s experiment! …… W6TNS\/7 96

Morse Converter for Frequency Displays<\/h3> – another break through for blind hams …… WA6AXE\/kH6 107

On the Trail of the Hamburglar<\/h3> – retrieving ripped-off radios …… W0EX 116
\n
\n

73 Ham Radio Today Issue April 1980<\/a>
<\/h2>\n

Sunspots… What Do They Mean?<\/h3> – your guess is as good as mine …… G3WDI 32

More on Jammer Nabbing<\/h3> – hints on equipment and strategy …… WB0CMC 36

Cheapy Scanner for the Memorizer<\/h3> – is $5 cheap enough for you? …… WA2ORU 38

Back to School<\/h3> – we can still learn a thing or two about basic electricity …… W6HDM 40

Moving Display ASCII Readout<\/h3> – works with UARTs keyboards and micros …… W8VL 46

Lab-quality Hi I Supply<\/h3> – part II …… McClellan 54

A Better Car Regulator<\/h3> – improved reliability …… Gelsinger 58

Test Gear Bargain from Heath<\/h3> – a multi-purpose RCL bridge …… Staff 62

Semiconductor Test Gadget<\/h3> – use with your scope …… Truesdale 64

Shoes and Socks for the IC-502<\/h3> – when your vacation ends you’ll appreciate this amplifler\/pS combo …… N4QH 66

Hams on The Trail of UFOs<\/h3> – the Army’s “flying saucer” movie… did you see it? …… K8NQN 68

Hi-fi CW for the TS-820<\/h3> – the SSB filter copes with numbing noise …… K3HBP 70

Going 2m All-mode with Yaesu’s FT-225RD<\/h3> – not just another pretty face …… W6OJF 72

The PL-259 Connection<\/h3> – reducing adapters need not try your patience …… AC5P 73

A Micro-controlled Ham Station<\/h3> – TRS-80 does it …… W4UCH\/2 76

CW and the TRS-80<\/h3> – send Morse with a Level l …… WB7TUG 80

A Solid-state RTTY Keyboard<\/h3> – with auto-shift …… K2BLA 88

SWLing? Try This Souped-up SSR-1<\/h3> – digital readout and more for Drake’s fine receiver …… G3WDI 92

Off to MARS with the S1<\/h3> – mod is also useful for oddball repeater splits …… K5EDS 96

Field-strength Fever<\/h3> – this simple meter eases antenna tuning …… W6DOB 98

CB to 10<\/h3> – part XXIV: Penny’s SSB rig …… WA4UUV 100

Build an Audio VOM<\/h3> – and keep your eyes where they belong …… AC5P 104

Sound-sensitive CW Sender<\/h3> – for hands-free Morse …… W2GZ 106

A Tightwad’s FSK Demodulator<\/h3> – using the 567 PLL …… WA5WPQ 108

Measure Frequency on your DVM<\/h3> – this 3-chip circuit works to 10 kHz …… W3HB 115
\n
\n

73 Ham Radio Today Issue May 1980<\/a>
<\/h2>\n

Home-brew Rf Impedance Bridge<\/h3> – indispensable tool for antenna fans …… WB6BIH 30

Rotary Beam for 10 or 15: the LB-2<\/h3> – eliminates nasty matching problems …… W6TYH 36

The 20-meter Double Bobtail<\/h3> …… W8HXR 44

Simple Switcher<\/h3> – a remote antenna switch with no control wires …… WB5SFB 48

Taming the Monster Quad<\/h3> – a four-element blockbuster you can build …… WA4JQS 50

For Cheapskates Only: A No-frills Tilt-over<\/h3> – requires a friend with a welding rig …… W9YFG 52

VHF Signal Diffraction<\/h3> – why the highest antenna may not be the best …… W5GFE 56

Wear Your Halo with Style<\/h3> – Mork would love it …… W9NMX 58

Curtain Raiser<\/h3> – simple Sterba curtain antennas …… W2JTP 60

Who Needs a Rotator?<\/h3> – how to do without …… W8HXR 61

A Tri-bander for the Attic<\/h3> – work 10 20 and 40 with this compact antenna …… W4UCH 62

Hurricane!<\/h3> – when David ravaged Dominica hams were at their best …… 8P6KX\/9Y4JW 68

A “Short-Yard” Antenna for 40\/75<\/h3> – fits where others won’t …… W9CRC 78

Antenna Fans: Try The Skeleton Slot<\/h3> – an improved driven element for VHF\/uHF …… Staff 80

The Capacitive Coaxial Ground Wire<\/h3> – could this be the end of TVI? …… DA1TM\/wD9HBB 82

Stick ‘Em Up<\/h3> – install this 2m Bi-loop anywhere …… W82MYT 83

Old Fishermen Never Die<\/h3> – they just learn to raise dipoles …… WA4LLE 84

Breakthrough! A Computerized Antenna Rotator!<\/h3> – KIM-l can do! …… K3LF WB3CTZ 86

Antenna Engineer<\/h3> – predict performance of phased arrays with a TRS-80 …… K8UR 96

SWTP\/h14 Get-together<\/h3> – a driver routine for the Heathkit line printer …… WA8GTG 100

Hustler Minibeam: the Mobileer’s Secret Weapon<\/h3> – two-el beam fits in your trunk …… K4TWJ 104

The Pope Comes to the Cornfields<\/h3> – and Iowa amateurs provide the communications …… WD0AKB AK0Q 108

Confused About Phased Arrays?<\/h3> – educate yourself with this simple model …… W5JJ 118

A Beam for Less than a Buck<\/h3> – have a ball for eighty cents …… KA8CGE 122

The California Crank-up<\/h3> – most convenient mast around …… W6WDF 131

The Beachside 2-meter Beam<\/h3> – stands up to salt spray …… K1QPS 132

Double Duty Mag-mount Antenna<\/h3> – it’s a portable GP too …… K4IQJ 134

A 40-meter Quad for $20<\/h3> – assuming you own two towers …… WA4JQS 136

A Dirt-cheap Tower Base<\/h3> – you can take it with you …… WA5TDT 138

Tri-band Dual Delta<\/h3> – here’s an attic antenna that works …… WB6MMV\/7 146

Try a Fox and Hare Special<\/h3> – antenna for DF operations …… SV0WX 148

The IC Outener<\/h3> – remove soldered-in chips …… WA4WDL WB4LJM 150
\n
\n

73 Ham Radio Today Issue June 1980<\/a>
<\/h2>\n

One Step at a Time: Designing Your Own Ham Gear<\/h3> – part I …… W4RNL 28

Down with Interpolation<\/h3> – a digital display for the Triton and others …… W4FQ 36

Hooray! An AFSk Auto IDer!<\/h3> – a clean and and legal ending for RTTY transmissions …… K3IJ 42

Let’s QSY to .52<\/h3> – ah technology …… WB2RVA 44

Five Test Equipment Bargains from Heath<\/h3> – the 5280 series features plenty of measuring power per dollar …… W2QFC 46

The Phoenix Fix<\/h3> – an alarming analog-to-digital conversion for out-of-time clock-radios …… WA3AJR 48

QRQ QRS- By the Numbers!<\/h3> – a digital CMOS code-speed indicator …… W7BBX 50

Adding a Scanner to Your 2m Rig<\/h3> – here’s a method that works with many scanner\/transceiver combos …… WA8HEB 54

Digital Transistor Checker<\/h3> – a “hands-on” project …… W4QBU\/pY2ZBG 56

CB to 10<\/h3> – part XXV: using those surplus 40-channel boards …… AF8B 58

The Stolen Rig Retriever<\/h3> – built-in gadget automatically sends your call with every transmission …… WB6KBM 60

Constructing QRP Dummy Loads<\/h3> – useful and inexpensive …… W1OLP 64

The IC-211 Cookbook<\/h3> – mods and tweaks to improve performance …… K3VGX 68

Talk a Hike<\/h3> – backpacking with an HW-8 …… K4FD 74

Tuning Antenna-mounted Preamps<\/h3> – do it without additional wiring …… Staff 78

PC Artwork Made Easy<\/h3> – lift layouts from the page with transparent contact paper …… W3HIK 80

Electronic Dice -a Family Pleaser<\/h3> – Las Ve gas look out! …… W7BBX 82

Fun with Foozle<\/h3> …… W7BBX 84

The Demise of Component Stores<\/h3> – parts places are past their prime …… VE3FLE 88

Priority Frequency Power-up for the FT-227R<\/h3> – the right place every time …… WA1AUM 90

Computerize Your Contest Paper-work<\/h3> – two BASIC programs do it all …… WA8WIA 94

Emulate an Elephant<\/h3> – but let your micro bear the burden …… VE6BB 98

Prefix Challenge<\/h3> – try this while you’re waiting for the band to open up …… AG6P 104

Check Chirp with a Choke<\/h3> – get 599 every time with this quick fix …… WA2MEL\/6 111

Reawaken that Sleeping Rx<\/h3> – first steps in receiver alignment …… Sara 112

Rubber Thumbs and Pilot Lamps<\/h3> – if you’re all thumbs enlighten yourself! …… K3MPJ 114

Tempo S1 2-meter Portable<\/h3> – 800 channels to go! …… WB9HRV 118

A Proper Pedestal for PCBs<\/h3> – handy holder eases circuit board construction and repair …… Staff 120

Surplus Treasures<\/h3> – assemble a quality ham station for less than $200 …… K1VIC\/2 122

Listen in Secrecy with a Giant Inductive Loop<\/h3> – monitor your rig anywhere in the house -without wires …… ZL2AMJ 124

Those Hamtronics Kits… How Can You Use Them?<\/h3> – an in-depth look at some electronic bargains …… WA4PYQ 130

10 Meters for the SB-221<\/h3> – add the “missing” band …… WA2KSM 134

Another Place Another Time<\/h3> – working the paranormal band …… Anon 136

Who Needs a $40 Soldering Iron?<\/h3> – here’s why you may want to invest in one …… Staff 144

Outboard Power for the 820<\/h3> – it’s easy to connect a second set of ears to the Kenwood transceiver …… KL7GRF\/6 146

CB to 6<\/h3> – convert a 49 MHz HT into something …… W9CGI 148

Digital Boat Anchor<\/h3> – using pencil paper and a frequency counter for receiver readout …… WB1ASL 152
\n
\n

73 Ham Radio Today Issue July 1980<\/a>
<\/h2>\n

The Rites of Spring<\/h3> – Dayton does it again …… N1AUI WB8BTH KA1HY 30

One Step at a Time: Designing Your Own Ham Gear<\/h3> – part II …… W4RNL 36

Top-banding the DX-60B<\/h3> – put a classic rig on a classic band …… WB1ASL 44

Forward into the Past!<\/h3> – a solid-state restoration project for a vintage BC receiver …… W5JJ 48

ADDSCAN<\/h3> – now you can be two places at once …… WB9FSC 52

Flat Cells are No Fun!<\/h3> – build a battery status monitor …… WA3ENK 56

When Plus Goes Minus<\/h3> – a 555-based negative power supply …… Minchow 58

Depolarize that Power Supply!<\/h3> – positive or negative grounds won’t bother you anymore …… AA6C 60

Transform Noisy Fluorescents<\/h3> – “temporary” solution …… W2OLU 64

Early Radio Detectors -a Backward Glance<\/h3> – pulling rf from the ether was (and is) no easy trick …… WSJJ 66

Sheathe Thyself<\/h3> – a cheap trick to pull on old rubber duckies …… WA8WTE 70

CB to 10<\/h3> – part XXVI: the Cobra 132 …… WA1UQC 72

FT-227 Update<\/h3> – more mods for the Fox-tango set …… WA1GPO 74

“That’s the Way It Was”<\/h3> …… K2VGV 78

All About Coordinated Universal Time<\/h3> – GMT has become UTC but the reasons for using it are as valid as ever …… WA7NEV 80

Don’t Be a dB Dummy!<\/h3> – use a pocket calculator to deal with decibels …… McMahan 82

The Sweet Sounding Probe<\/h3> …… W7BBX 84

Silence is Golden<\/h3> – reassemble noisy transformers to eliminate hum …… Powell 91

Welcome to the ’80s<\/h3> – Radio Shack and Macrotronics make computerized operation a reality …… K3PUR 92

The Multi-media Bench Tester<\/h3> – this audio\/visual device will test your diodes SCRs transistors and more …… WD4KFF 106

CB to 10<\/h3> – part XXVII : new life for SSB CB rigs …… N6SD 108

Build the ZL Paddle<\/h3> – brass with class …… ZL2GA 118

Repeater Time-out Warning<\/h3> – put time on your side (relatively speaking) …… KA6A 120

CB to 10<\/h3> – part XXVIII double your channels in SSB conversions …… WB2EQG 122

Ham Economics: Selling Used Gear<\/h3> – be wily …… K5CA 124

A Final Solution<\/h3> – make life easy for your filaments …… W4ANL 125

The NMX Relay Deceiver<\/h3> – pull in those 24-v relays with a mere 12 V …… W9NMX 128

Who Needs SSB?<\/h3> – using your FT-101 on 10m AM …… K6JS 130

Like to See My Etchings?<\/h3> – chemical technique keeps your property at home …… W6OJJ 132

A Low-life Antenna<\/h3> – tune in on the life below 500 kHz …… AB5S 134

The Don Nobles Descramblers<\/h3> -listen to what you’re not supposed to hear …… WA4PYQ 148
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\n

73 Ham Radio Today Issue August 1980<\/a>
<\/h2>\n

The Soft Mount<\/h3> -mobile mounts enter the space age …… W2QFC 32

Notes from Big Sky Country<\/h3> – the further adventures of Dr. Hess …… W6CK 36

Meet the Little Giant<\/h3> – everyman’s sheet-metal tool …… K4JHN 46

On Ten FM<\/h3> – home of the free land of the brave …… WB2EQG 52

The Rains of Morvi<\/h3> – duty in disaster for Indian hams …… VU2ST 60

Those Fabulous Fifties<\/h3> – an era in retrospect …… W1FK 64

Trash All Your Worries<\/h3> – Baron Von Rhonstead and the RFI caper …… WA5TUM 70

Two Dollars a Tone<\/h3> – an inexpensive subaudible generator based on the S2559 …… K8SCL 74

The World Above 430<\/h3> – part I: getting there is easier than you think …… W9CGI 80

Over There<\/h3> – notes from Kilroy …… W9IWI 86

Busman’s Holiday<\/h3> – combine hamming with pleasure on your next vacation…… K4BKK\/vP1RS 96

A Soft Approach to Logging<\/h3> – electronic data base management for hams …… Minor 100

RTTY with the H8<\/h3> – a Heath-based RTTY system …… W5IFQ 106

A Different Kind of Charger<\/h3> – take a Gel\/cell to lunch …… WB6MXD 115

“No Problem… No Problem”<\/h3> – tales of DX contesting with VP2KC …… W4LVM 122
\n
\n

73 Ham Radio Today Issue September 1980<\/a>
<\/h2>\n

In Profile: Dick Bash KL7IHP<\/h3> – the father of The Final Exam speaks out …… N1AUI 40

That Mysterious Mode: 10 FM<\/h3> – an examination of propagation phenomena …… WB2EQG 44

The World Above 430<\/h3> – part II: next stop 1296 …… W9CGI 52

Bridge Over Troubled Audio<\/h3> – another method for driving speakers …… K4IPV 56

Load a Lawn Chair<\/h3> – even if you can’t carry a tune you can build this matchbox …… WB5PPV 60

The Penultimate CPO<\/h3> – a non-discrete LSI device …… N6HI 62

Get Out and Vote<\/h3> – a grass roots project for this election year …… WA9FDP\/wR9ACD 64

A Wider Windom<\/h3> – broadbanded sans transmatch …… WA4PYQ 68

RYRYRYRY<\/h3> – an electronic torture test for RTTY systems …… Minchow 70

Goin’ Mobile<\/h3> – equipment for air-conditioned gypsies …… KL7IPE\/dA1SM DF7NM 76

Inside Radio Shack’s Digital Receiver<\/h3> – SWLing with the DX-300 …… W4PGI 80

The Two-meter Monkey<\/h3> – not just another linear …… KL7GLK 84

RTTY QSK<\/h3> – break in to RTTY operation with a KOR …… CT1EM\/pY1AQL 88

A Programmer’s Potpourri<\/h3> – fifteen practical programs for hams …… K2OAW 90

CB to 10<\/h3> – part XXIX: put that Hy-gain CB board to use …… W1BG 102

Old Receivers Never Die<\/h3> – but occasionally they do get sick …… W4ANL 111

The Battery Minder<\/h3> – a real turn-on for chargers …… K4GOK 112

Working in Wood<\/h3> – tilt-over home-brew for $2 a foot …… WB3ICL 116

The Two-hour Audio Amp<\/h3> – quick to construct easy to use …… K7HKL 118

Power X 2… Plus!<\/h3> – an improved two-battery auto electrical system …… WA5TDT 122

The Little Thinker<\/h3> – a quick puzzle project …… WB4RXB 126

A Conversion with Gusto<\/h3> – throw your weight around on six …… WB2WIK 130

The Confidence Builder<\/h3> – a CW speedometer …… WB4TYL 134
\n
\n

73 Ham Radio Today Issue October 1980<\/a>
<\/h2>\n

Escape from Mt. St. Helens!<\/h3> …… W7WFO 34

Sheila Ran!<\/h3> – a sightless sprinter’s triumph is one of ham radio’s finest hours …… WB41IFF 38

The First Man in Space Was a Ham<\/h3> – UA1LO remembered …… W1QMS 42

NASA Satellites You Can Use<\/h3> – with permission of course …… K40VK 50

Undertones<\/h3> – a fractional frequency oscillator …… W4FEC 56

The Arcane Art of ATV<\/h3> – the transverter approach to fast-scan television …… WB8DQT 60

How to Make a Good Scanner Better<\/h3> – a bevy of useful mods …… WA4PYQ 68

Win Friends for Your Club<\/h3> – PR is the name of the game …… WA5TUM 76

Field Strength for Free<\/h3> – a home-brew conversion …… Staff 82

The QRM Killer<\/h3> – antenna alternative for 40 …… W9HBF 88

PC Boards- A Photographic Method<\/h3> – it’s easy when you take it step by step …… WB5HGR 104

Free CMOS Timers<\/h3> – build one-shots from spare inverters …… WD5DDR 113

Late Check-ins Come Now<\/h3> – zero-beat on this computerized NCS system …… N8AD 120

A Computer-controlled Talking Repeater<\/h3> – Part I: Introduction …… WA6AXX 124

Murphy’s Own OSCAR Tracker<\/h3> – simple pointer for satellite antennas …… K8BG 132

Counting with Class<\/h3> – build this SOD-mHz LSI frequency counter …… WB4EKB 134

A Transistor for True Believers<\/h3> – tubes forever? Not with FETs! …… WB7CMZ 142

Stay Cool with TM<\/h3> – use thermostat modulation to lower your heating costs …… WB2EQG 144

One Man’s Magazine: Twenty Years of 73<\/h3> …… N1AUI 146

How To Be An Amateur<\/h3> …… W2ZGU 156

Some Guys Make It<\/h3> – and then there’s us …… K2ORS 168

The 40-meter Band Blaster<\/h3> – this antenna works but why? …… W9HBF 179

Gilding the Lily<\/h3> – FT-101 mod for the crazy purists …… WB4HLZ 188

Mike Mods for the KDK-2016A<\/h3> – improved scanning …… WB9WNU 190

Clock Blocks<\/h3> – a compendium of TTL and CMOS oscillators …… K4IPV 192

Build a Better Battery Tester<\/h3> – test ’em under load …… Staff 196

Getting the SB-220 to Idle<\/h3> – a final-saving mod for Heath’s popular linear …… W9RY 197

Egad! An Easy-to-build Synthesizer!<\/h3> …… N4CEY 210
\n
\n

73 Ham Radio Today Issue November 1980<\/a>
<\/h2>\n

VSWR… Automatically!<\/h3> – simplify antenna matching with this tune-up aid …… WB0GWP 42

Welcome Back Barry!<\/h3> – the Scottsdale RC’s most famous member …… K7NZA 52

Return to Shangri-la<\/h3> – a visit with 9N1MM …… W1QMS 58

Direct Conversion lives!<\/h3> – excitingly simple receiver project …… ZS6UP 64

Hams vs. Hurricane Allen<\/h3> – 73 aids St. Lucia relief efforts …… N8RK 70

Tune In the Wind<\/h3> – a do-it-yourself hot-wire anemometer …… VE7DKR 80

Direct Printing FAX<\/h3> – get photographic-quality reproduction for 6 cents a copy …… WB8DQT 90

Breadboard Signal Generator<\/h3> – sell your H-p stock once you build this project …… K3QKO 100

The Odd Couple<\/h3> – CASEY\/1 tackles OSCAR’s telemetry …… WA9LRI 110

PL Tones from a KIM-1<\/h3> – a real time wasting project …… WD8CHH 112

A\/d Converters Explained!<\/h3> – another enigma unraveled …… WB4UHY 122

A Computer-controlled Talking Repeater<\/h3> – Part II: microcomputer details …… WA6AXX 132

The Radio Spectrum at a Glance<\/h3> – from VLF to UHF SWLing is fun …… WA4PYQ 142

Be Prepared!<\/h3> – 30 meters for the FT-101B …… KB8NO 156

Automated Operating Comes of Age<\/h3> – Microlog’s ATR-6800 …… K3CMY 170

New Weather Eye in the Sky<\/h3> – a primer on NOAA’s TIROS …… WB8DQT 176
\n
\n

73 Ham Radio Today Issue December 1980<\/a>
<\/h2>\n

Who Really Invented Radio?<\/h3> – the twisted tale of Nathan B. Stubblefield …… WB2NEL 36

In Search of the Elusive SES<\/h3> – track solar activity with this simple VLF receiver …… WA3UER 42

An Even Better IC Timer<\/h3> – better than what? …… WA0PBQ 46

Direct Printing FAX<\/h3> – Part II: constructing the facsimile recorder …… WB8DQT 52

A 600-mHz Universal Counter<\/h3> – you’ll freq out over this one …… W4VGZ 58

Top-banding the DX-60B<\/h3> – Part II: a companion vfo …… WB1ASL 64

An Amp for QRPp Addicts<\/h3> – build this resistive step attenuator for low low power work …… WA0RBR 68

The Center-fed Bizarre<\/h3> – would you believe an indoor antenna for 80? …… N6RY 72

Clean Sweep for the FT-221<\/h3> – don’t miss the action …… WB0LLP 82

A New Frontier<\/h3> – weekends were made for.. 10 FM! …… K4TWJ 84

Scanner Magic for Heath’s 2036<\/h3> – grab your October 79 issue for Part I of this project …… WA4BZP 88

HV Power Rectifiers<\/h3> – amplifier builders should read this one …… WB2WIK 92

Cheap Connectors for Half-inch Hardline<\/h3> – at your neighborhood hardware store …… WD4LWC 100

The Microwave Midget<\/h3> – this WEFAX converter features something different -an active mixer …… W3KH 106

The Amazing Bobtail… Our Readers Respond<\/h3> – more ideas for using and modifying this easy-to-build antenna …… W8HXR 110

Single-tone Paging for Wilson HTs<\/h3> – simple circuit should work with many rigs …… W4BF 112

Teletext and Viewdata: Are You Ready for the Information Boom?<\/h3> – coming soon to a living room near you: video data services …… WB9KPT 120

Double-duty CW Keyboard<\/h3> – helps you on receive as well as transmit …… K1GN 126

Sixteen Channels of Digital Delight<\/h3> – do-it-Yourself data acquisition …… WB4UHY 132

A Computer-controlled Talking Repeater<\/h3> – Part III: interfacing to the microcomputer …… WA6AXX 138

Make a Microcomputerist Smile<\/h3> – build him this EPROM eraser …… AL7G 148

Build a Talking Digital IDer<\/h3> – K20AW redesigns his IDer at last …… K2OAW 162
\n
\n

73 Ham Radio Today Issue January 1981<\/a>
<\/h2>\n

Emergency Tone Alert System<\/h3> …… WB5UVC WB5ASA WB5PRD 42

WWV-to-80 Meter Converter<\/h3> …… N7BH 48

Cheap and Simple<\/h3> – your basic 13.8-v 25-a power supply …… WA9VLK 50

Direct Printing FAX<\/h3> – part III; testing and operation …… WB8DQT 54

Unplug It Dummy!<\/h3> – safety for the traveling ham …… WB9SKX 58

Power Plus for the Omni<\/h3> – Improving on Ten-tec’s power supply …… WA4IQQ 60

Oddball Offsets for the KDK-2015R<\/h3> – make a good rig better …… WB6MYF

The Strange Predicament of Walter Hann<\/h3> – OE8WHK did the right thing-and suffered the consequences …… WA4PYQ 66

Put “the Rep” in Your Repeater<\/h3> – an automatic autopatch dialer …… K4ALS 68

Quick and Dirty Line Noise Suppressor<\/h3> …… WA4PYQ 76

Over the Hump and into History<\/h3> – the last flight of #42-107270 …… Ritchey 78

Rx and Cx<\/h3> – easy-to-build substitution boxes …… WD5CDJ 84

Don’t Be Sunk by Heat Sinks<\/h3> – a painless introduction to heat-transfer physics …… WA4OSH 86

Tracker -the Ultimate OSCAR Finder<\/h3> …… WD8DRK K8UR 88

You Still Haven’t Built a Logic Probe?<\/h3> – try this one …… Vergona 96

VHF Contesting<\/h3> – a magnificent obsession …… N8RK 100

Sell ‘Em with Slides<\/h3> – A\/v shows can fire up enthusiasm …… N8BPI 104

The Power Waster<\/h3> – adjustable electronic load for power supply testing …… K6IQL 108

QRZ Sunshine<\/h3> – building solar-powered repeaters …… WBlHXY 114

Transmitter Tune-up for Blind Hams<\/h3> – an audible indicator for power out …… WA4LBX 120

Installing Subaudible Tone Encoders<\/h3> – do it right …… WA7LMO\/n6XB 126

Four-band Mobile Antenna<\/h3> – looks like a weird hat rack …… K5PTC 129

Computers and HF<\/h3> – a discussion of alternatives …… W9JD\/dAlFE 130

Ned Novice and his Capacitance Meter<\/h3> – you too can build one …… W4VGZ 132

Daze of Whine and Noises<\/h3> – intoxicating information about alternators …… K2PMA 146
\n
\n

73 Ham Radio Today Issue February 1981<\/a>
<\/h2>\n

Winter Olympics Torch Run<\/h3> – a one-year perspective …… KA2CNN\/aAR2DE KA2DBW 36

New Life for Old Klystrons<\/h3> – tips for microwave experimenters …… WA4WDL 46

Add RTTY to Your Repeater<\/h3> – voice operation is preserved …… WB4EMI 48

A Patch for the TS-120s<\/h3> – add phone patch compatibility …… W5JJ 50

Successful Ham Classes<\/h3> – a guide for club organizers …… WB1FOD 56

How FCC Rules Are Made<\/h3> – a labyrinthine tale …… WD4DAZ 62

A $10 Phone Patch<\/h3> – CQ Ma Bell …… N1II 68

Two Stations on One Antenna<\/h3> – Impossible? Guess again! …… WA4RRB WB4INC 70

Build a 60-hz Frequency Monitor<\/h3> – keep the power company on its toes …… K0YMJ 72

Feelin’ No Pain<\/h3> – expedition to Luckenbach …… W5QJM 74

Operating Overseas<\/h3> – licensing facts for traveling hams …… A2CPS 78

Stalking the Elusive Ground Fault<\/h3> – a real-life adventure …… W5OS 82

An 0perating Console with Class<\/h3> – customize to your heart’s desire …… W8GI 84

Add-on Capacitance Meter<\/h3> – works with your counter …… W4FEC 86

Better Pilot Lights<\/h3> – LEDs are the “in” thing …… K4ZHM 89

Caution: Solid-state Finals<\/h3> – learn to live with no-tune radios …… N1II 90

Under Software Control<\/h3> – a repeater control system with minimal hardware …… WD8CHH 94

The Fun-mitter -a Goof-proof Rf Project<\/h3> – fail-safe QRP rig uses Radio Shack parts …… WA0RBR 100
\n
\n

73 Ham Radio Today Issue March 1981<\/a>
<\/h2>\n

The ZL\/dF Special<\/h3> – your next T-hunt could be a hare-raising experience …… AD6Z 40

A 49-mHz Repeater?<\/h3> – fun project …… KL7GLK 44

TR-7400 Behind Bars<\/h3> – something new in S-meters …… WB3ATP 46

The Last PL Generator<\/h3> – this synthesized unit is the last one you’ll ever need …… WB2BWJ 50

An End to Repeater Time-outs<\/h3> – with the IC-211 …… VP2EZ 53

The History of Ham Radio<\/h3> – part XII …… W9CI 54

Half a Loaf<\/h3> – charger for 6-volt batteries …… Nordgren 60

The Great Aluminum Cover-up<\/h3> – how to paint the stuff …… WB0YTH 62

Home-brew X-band Wavemeter<\/h3> – indispensable test gear for microwave mavens …… W1SNN 64

The Real-world Connection<\/h3> – add up to four I\/o ports to your TRS-80 …… K6EW 68

Practical Af and Rf Speech Processing<\/h3> – using modern ICs …… Staff 72

LOR: A Light-operated Relay<\/h3> – handy circuit has many uses …… PY2AUC 76

The Calibrator Gater<\/h3> – so you can find yourself …… WB5PPV 78

The Flexi-plane Antenna<\/h3> – this “scrawny ducky” will boost your HT’s signal …… N1PL 80

CB to 10… and Beyond<\/h3> – getting excited at 432 …… WB3CDE 84

Three-way Power Supply<\/h3> – ideal for CMOS TTL op-amp projects …… W3HB 86

Home-brew in the Real World<\/h3> – victim tells all …… WB1GVU 87

DXing the Past<\/h3> – a visit to Signal Hill …… VE3CXL 88
\n
\n

73 Ham Radio Today Issue April 1981<\/a>
<\/h2>\n

The History of Ham Radio<\/h3> – part XIII …… W9CI 46

Build a Frequency Counter -that TALKS! <\/h3>– state-of-the-art for blind hams …… WA0OHO 52

In the Stack<\/h3> – R\/cers don’t be grounded by control channel congestion! Put your ship on six! …… WB3BQO 56

All the News that Fits<\/h3> – make your club newspaper a winner! …… N9YL 60

My Infernal Tower<\/h3> – tales of aflying fiasco …… KC7M 64

Apples: Five Bits or Eight<\/h3> – Tired of “Space Invaders”? Then turn your Apple II on to RTTY! …… WB6MEP 66

Rotator Rescue Mission<\/h3> – prevents sudden stops …… K4GOK 74

The Racer’s Edge<\/h3> – it was ham communications at Derby days in Akron …… WD8JOL 84

Perfect Parabolas<\/h3> – use some solar technology on your next dish antenna …… W4UFT 90

Help for the HW-2036<\/h3> – hum mods for Heath-equipped hams …… K8KUZ 96

The Honeymoon is Over<\/h3> – hints and kinks for ham husbands …… HR1ADF 98

CB to 10<\/h3> – part XXX: the Midland 13-866 …… Grant 104

The Nicad Conditioner<\/h3> – help your nicads lose their memories …… W2KPE 106
\n
\n

73 Ham Radio Today Issue May 1981<\/a>
<\/h2>\n

Two-meter Antennas: Facts and Fables<\/h3> – the truth about omnidirectional antennas on two …… W1IS 12

The 440-mHz Curtain<\/h3> – hang this broadbanded two-bay collinear on your tower and get 22 dBi to play with …… WA9OZC 22

The Plumber’s Parabolic Mount<\/h3> – a first-class hydraulic system …… WD4MRJ KA4JYD 28

The History of Ham Radio<\/h3> – part XIV …… W9CI 36

The Skeptic’s Multiband Ground Plane<\/h3> – This antenna flies in the face of accepted theory. Do you think it will work? …… W1GV 38

Dish It Out<\/h3> – home-brewing a parabolic reflector with the focus on cost ……W4NK 42

The Earth Mover<\/h3> – would you believe that this antenna changes its height aboveground without moving? …… W8HXR 46

Sailing the Tri-band Sloper<\/h3> – put some half-waves among your halyards matey! …… W8KXW 50

Touch-tune<\/h3> – tactile frequency determination for visually handicapped hams …… AA3S 54

Stay Tuned<\/h3> – three tuner projects with no commercial interruptions …… Staff 58

Review: Kenwood’s New 830s<\/h3> – evolution not revolution …… WB8BTH 66

Review: Azden’s PCS-3000<\/h3> – the 2-meter rig of the future is available now …… WA2JSR 68

Battlewagon<\/h3> – tales of a mini-expedition to the USS Texas …… WD5ICY 72

Inside Coax<\/h3> – know what you’re buying in quality and construction …… WB6MMV\/7 78

The “No Antennas” Antenna<\/h3> – a coaxial dipole is one woman’s solution to problems with pesky landlords …… WA9BBX 82

Slow-scan in Bits and Bytes<\/h3> – microprocessors and plugin cards can give you flexibility on SSTV …… K6AEP 84

Review: Cushcraft’s Skywalkers<\/h3> – performance through computer-aided design …… WB8BTH 98

Review: Avanti’s 10-meter Quad<\/h3> …… AE3S 99

Review: VoCom’s Collapsible Whip for HTs<\/h3> – 5\/8-wave from 144 to 450 MHz …… W8FX 100

Review: Kreco’s SC-15OA 2-meter Collinear<\/h3> – a commercial-quality antenna built to take it …… W8FX 110
\n
\n

73 Ham Radio Today Issue June 1981<\/a>
<\/h2>\n

Repeater at 102 000 Feet!<\/h3> – Canadian hams go up up and away …… VE4FK 12

Digital Control for the Ham III Rotor<\/h3> – good-bye manual switching!…… WA0PBQ 18

Review: The Doppler Systems DDF-3003<\/h3> – a review of the latest in direction-finding equipment from Doppler Systems …… KA1LR 28

DF Breakthrough!<\/h3> – the “turkey” tracker we’ve all been waiting for …… W7BEP 32

The History of Ham Radio<\/h3> – part XV …… W9CI 48

Review: The VoCom Two-meter Monkey<\/h3> – 30 Watts out from a mighty small package …… N1BEJ 52

The Solid-copy RTTY TTL<\/h3> – state-of-the-art performance you can afford …… K1VIC\/2 54

Review: The CES Simplex Autopatch<\/h3> – some hot new hardware for two …… KA1LR 62

About the Beverage<\/h3> – when you say longwire mean it. Use the remarkable beverage! …… W2XQ 68

Design-a-dish<\/h3> – produce a proper home-brew parabola with this BASIC program …… W3KH 72

Mayday!<\/h3> – help locate downed aircraft with your local repeater …… W2FJT K2lXU K2UZS 78

An 820s Remote Vfo<\/h3> – using the rig’s counter and display …… VE5PZ 84

Maximize That Multimeter<\/h3> – add a few features the manufacturer forgot …… Staff 88

Review: Amateur Radio Super Hobby!<\/h3> – a breezy new intro to the world of hamming …… KA1D 96

Review: A Guide to Amateur Radio<\/h3> – book review of an English import …… N1BEJ 97

Review: Get Your Shack Together<\/h3> …… K4TWJ 98

Plain Talk on Plain Language Rules<\/h3> …… N8RK 125

Review: A Timely New Product<\/h3> – the MFJ-102 digital clock …… WA4PYQ 130
\n
\n

73 Ham Radio Today Issue July 1981<\/a>
<\/h2>\n

Dayton Dilemma ’81<\/h3> – which new gear do you buy? …… KA1LR 22

The Fun-ceiver<\/h3> – easy-to-build companion to February’s QRP Fun-mitter …… WA0RBR 32

Review: The Kenwood TS-130s<\/h3> – a good rig done better …… KA1LR 38

Review: The NCG-15 SSB\/cW Monoband Transceiver<\/h3> – moving tale of mobile hamming …… KA1LR 42

The Incredible Shrinking Antenna<\/h3> – give your vertical a top hat …… W1GV\/4 44

Review: The Micro Control Specialties Mark 3CR<\/h3> – a hassle-free repeater that does it all …… KA1LR 46

Review: Radio Amateur’s License Manual<\/h3> – don’t memorize learn! …… N8RK 48

The CCD Antenna- Another Look<\/h3> – theoretical justification and answers to some frequently asked questions …… W4FD W4ATE 50

The History of Ham Radio<\/h3> – part XVI …… W9CI 58

Review: The Radio Amateur’s Conversation Guide<\/h3> …… KA1LR 65

Aerial Heirlooms<\/h3> – towers from the past…… AK0Q 66

Amateur Telemetry<\/h3> – monitor your repeater’s vital signs with this simple system…… W2FPP 72

Rallying the HP-55<\/h3> – gentlemen start your calculators! …… Lutz 80

Icing on the IC-2A Cake<\/h3> – nonstandard offsets for Icom’s hand-held …… WA4TEM 84

Flexible Couplings<\/h3> – for every project there is a reason turn turn turn …… WB6CZW 90

The Bobtail Curtain: Round Three<\/h3> – wherein this author turns two previous articles upside down …… W6RCL 92

The Micro-generator<\/h3> – this diminutive device has a price tag as small as its size …… WA3RJS 94

Grandma Packs a Seabag<\/h3> – lady ham takes to the high seas …… K7NZA 102

Review: The Datong ASP Speech Processor<\/h3> – will this give you a British accent? …… W8YA 118
\n
\n

73 Ham Radio Today Issue August 1981<\/a>
<\/h2>\n

Wild Turkeys 1 FBI 0<\/h3> – another foul-up from the feds …… WA7UDO 12

Sailplanes on Six<\/h3> – these thermal-hunting hems have an edge on the competition …… WB3BQO 20

The Supernova Station Organizer<\/h3> – in this project four into one will go! …… W3BYM 26

Kenwood’s TR-9000<\/h3> – the multi-mode 2-meter rig that’s making SSBers out of VHFers …… WB8BTH N8RK 30

Butternut’s HF5V-1II Vertical<\/h3> – this one really does work equally well in all directions …… KAlLR 34

The Meterless Ohmmeter<\/h3> – an audible continuity tester …… WB7NEZ 36

QRM-free Antenna Tuning<\/h3> – with this inexpensive noise bridge …… Staff 40

IC-2A Accessories the Cheap Way<\/h3> – build ’em yourself and save …… AD5X 44

Solar-powered Alignment Tool<\/h3> – using Old Sol to find true North …… K6BW 48

The DX Primer<\/h3> – low power plus low antennas plus good technique equals 300 countries …… W8YA 50

A Flier’s Guide to the Airwaves<\/h3> – off we go into the wild blue yonder …… WB6BHI 58

Cybernet Ten-meter Offset<\/h3> – If you’ve gone (CB to 10 why not go all the way? Add the repeater offset too! …… K3NXU 66

A Stout Heart for a Simplex Autopatch<\/h3> – put your KIM-1 to work …… WD8CHH 70

The Bearcat 350 Programmable Scanner<\/h3> – a first-class act from Electra …… WA4PYQ 78

The Calectro Multi-tester<\/h3> – a full-size lab-type multimeter for fans of analog operation …… W8FX 80

How To Defend Yourself Against Radar<\/h3> …… N8RK 85

Guide to RTTY Frequencies<\/h3> …… K8DIU\/4 87

The History of Ham Radio<\/h3> – part XVII …… W9CI 88

The Robot 800H<\/h3> – a specialty terminal for RTTY\/morse\/sSTV and you …… WB9PKD 92

The Better Vertical<\/h3> – elevated feed means low angle of radiation …… WD9AHH 94

The TET SQ-22 Antenna<\/h3> – walking the dog with a two-meter quad …… KA1LR 99

Newcomer to Nicads?<\/h3> – you’ll get a charge out of this informative overview …… W6OJF 100
\n
\n

73 Ham Radio Today Issue September 1981<\/a>
<\/h2>\n

10 000 Contacts from Easter Island<\/h3> – four Minnesotans make a dream come true …… K4ESQ 12

A Very “Special” Weekend<\/h3> – hams help New York’s Special Olympics run smoothly …… WB2CMB 22

Getting Ready for the Real Thing<\/h3> – emergency preparedness that works …… WA3REY 26

Review: The FRG-7700 General-coverage Receiver<\/h3> – a first-rate rig for the shortwave bands …… KA1LR 30

Two Meters Getting A Little Boring?<\/h3> – maybe you need to try crossband DXing …… WA3REY 34

A Lot of Hot Air<\/h3> – keeping balloons aloft …… WB6JBI 38

Review: The DS2050 KSR RTTY Terminal<\/h3> – top performance at a bottom price from HAL …… KA1LR 42

Review: The Welz SIP-300 Swr and Power Meter<\/h3> – a little digging for this meter is worth the effort …… KA1LR 46

Free PR for Ham Radio!<\/h3> – how to cooperate with the news media …… WD4NEK 50

Tricking-out the FT-9011\/902<\/h3> – some competition mods from the Fox-tango racing team …… W4ZCB N4ML 54

That They Might Communicate<\/h3> – one group’s efforts to get the vision and hearing-impaired into hamming …… K7NZA 66

A Cost-effective Approach to OSCAR<\/h3> – sources and suggestions for getting started …… KA5EIM 70

DX Program Roundup<\/h3> – for the SWL with DXitis …… Peterson 84

TRS-80: Your Electronic Brasspounder<\/h3> – automated CW for Level I owners …… N0AGX 90

Phase III and Beyond<\/h3> – the down-to-earth satellite service …… N8RK 96

Review: You Can Scan with the Iscan<\/h3> – memory scanning for the TR-9000 …… WB8BTH 100
\n
\n

73 Ham Radio Today Issue October 1981<\/a>
<\/h2>\n

Contesting from VP5<\/h3> – the other end of the pileup and how to get there …… WB8BTH 12

In Profile: Ted Gamlin A Contester<\/h3> …… KA1D 18

Review: The Kenwood TS-530s HF Transceiver<\/h3> – sophisticated performance at a not-so-sophisticated price …… KA1LR 26

Folded Unipole for 160<\/h3> – Top-banders take notice! Here’s a top-loaded radiator with the government’s seal of approval …… WB6ZYK 28

Review: The VIZ WD-747 Digital Multirneter<\/h3> – low cost plus high performance equals success …… WA4PYQ 36

The Winning<\/h3> – days in the life of a contester …… WA3FUV 40

Review: The GU-1820 Ac Generator<\/h3> – 100 pounds of portable power from Heath …… AC9V\/1 42

Radio Rehab<\/h3> – how ham radio helps young offenders …… WA6VIP 44

Heath’s HA-202 Goes to 220 MHz<\/h3> – power up with this simple mod …… WA5VJB 48

Review: The Mirage B1016 Two-meter Linear Amplifier<\/h3> – for those times when you have to be heard …… KA1LR 50

More Punch for the Hot Water 101<\/h3> …… K5SE 52

Review: Gunnplexer Cookbook<\/h3> …… N8RK 54

The Green Gallon<\/h3> – an HW-101 look-alike (except for those four 811As) …… W3BYM 56

Controlled Chaos<\/h3> – getting the most out of state QSO parties …… W2XQ 62

Review: The General Electric Programmable Clock Radio<\/h3> – sweet dreams for the broadcast DXer …… W8FX 66

Propagation Prophecy<\/h3> – you too can calculate the MUF …… AK0Q 70

Keyer Magic<\/h3> – unravel the mystery of TTL circuits …… N5DY 80

The Contest Cookbook<\/h3> – basic strategy and tactics …… N6OP 92

The $50 Sweeper<\/h3> – build this audio function generator and sweep your troubles away …… K3LF 100

New Horizons for the HW-8 Transceiver<\/h3> – a dandy mod to expand frequency coverage …… W1PQ 112

New Frequencies for the IC-2<\/h3> – for MARS members only …… KS4B\/nNN0BKS 113

The Digital Defender<\/h3> – computerized ham shack security …… W7CRY 116

Diode Doctor<\/h3> – the P-N diagnoses …… N1II 131

In Profile: Lloyd and Iris Colvin The DXpeditioners<\/h3> …… KA1D 132

Ringo Ranger Redux<\/h3> – add those radials for better performance …… W1HHF 137
\n
\n

73 Ham Radio Today Issue November 1981<\/a>
<\/h2>\n

The Satellite TV Challenge<\/h3> – 73 magazine’s answer …… N8RK 14

Space Spinoffs for Amateur Radio<\/h3> – the makings of a communications revolution …… WA1DCP W2IKQ 18

How Big A Dish?<\/h3> – Satellite central part 1 …… Gibson 20

Satellite Channel Guide<\/h3> – Part 1 …… WESTSAT 24

Satellite TV Receivers<\/h3> – is there a better way? …… K4TWJ 26

Spread Spectrum<\/h3> – a report from AMRAD …… WB3KDU 32

A Visit with SV0AY<\/h3> – the road to paradise …… N1BEP 36

Review: Reviewing Daiwa’s New Meters<\/h3> – fiddle free swr measurement …… KA1LR 40

Ham Shack Design for Beginners<\/h3> – Novices take note …… N1II 42

SSTV Signal Analyzer<\/h3> – simple and inexpensive even …… K7YZZ 46

More for Less<\/h3> – this tune-up procedure gives more RTTY output less heat to dissipate …… WB4PWC 50

Review: Inside the Palomar Preamp<\/h3> – big ears for your receiver …… W8FX 52

Review: Four New Books for the Experimenter<\/h3> …… N8RK 54

CB to 10<\/h3> – part XXXI simplified offsets …… WA7ZGP 57

An X-band Swept-signal Source<\/h3> – one for the road …… W1SNN 60

Battery Check!<\/h3> – do your nicads measure up? …… PS7ZAD 64

Review: Investigating Icom’s 730<\/h3> – quite a rig …… K4TWJ 76

Review: The Complete Idiot’s Guide to DX<\/h3> …… AG9V\/1 80

Eyeball QSO with Radio RSA<\/h3> …… Peterson 82

Review: Micronta’s New Multimeter<\/h3> – an LCD DMM from T-rS …… K6UGT 92

Mods for the Clipperton-l<\/h3> – smooth sailing ahead …… K4JW 94

The Traveling Ham’s Allband Antenna<\/h3> – in this ultimate portable system? …… W3JIP 100

KIM’s Magic Fingers<\/h3> – RTTY transmit program …… VE1AKL 112

AX-l90 Upgrade<\/h3> – Collins components can make the difference …… VE7DLU 118

Extra Accuracy for Heathkit Clocks<\/h3> – a synchronous solution …… N5AEN 124

The 160 Winners!<\/h3> – W8LRL and W4CN take top honors …… KE7C 156

Cartography for Kerchunkers<\/h3> – making repeater maps …… W4FXE 156

Ten-meter Lunch Hour<\/h3> – ham radio for school kids …… WA8WTE 158
\n
\n

73 Ham Radio Today Issue December 1981<\/a>
<\/h2>\n

Cold Comfort<\/h3> – an HT to the rescue at fifteen below …… KA1D 12

Review: The Rex Bassett TLM-2 Mobile Mount<\/h3> – banish your fear of flying …… KAlLR 18

Update Your CW Music Keyboard<\/h3> – play it again Sam …… K5KL 20

Review: The Kenwood TR-7730 Transceiver<\/h3> – Let’s get small …… KA1LR 26

Joe Ham: The Consumer<\/h3> – do you fit the mold? …… N6AVU 32

Bob Cooper: Profile of a Pioneer<\/h3> …… N8RK 38

Satellite Channel Guide<\/h3> – part III …… WESTSAT 44

Satellite Television Glossary<\/h3> – part I …… Satellite Television Handbook …… Staff 46

TVRO Receivers: The Inside Story<\/h3> – Satellite Central part II …… Gibson 54

Review: The Ace Portable Synthesized VHF Receiver<\/h3> – for those times when listening is enough …… W8FX 68

Beginner’s Guide to Antennas<\/h3> – not just for Novices …… N1II 74

Review: The Daiwa Infrared Wireless Microphone<\/h3> – is the mike cable obsolete? …… K4TWJ 82

What’s It All About ASCII<\/h3> – RTTY technology update …… W4RI WB4APR 90

Review: The Radio Shack Pro-2002 Scanner<\/h3> – a look at the Shack’s latest …… N3BAH 96

An Easy L-meter<\/h3> – you’ll need a frequency counter …… W5JJ 100

Review: A Quad for Two Meters<\/h3> – the Palomar portable power picker-upper …… W8FX 104

“Chopstick” Helical for 432<\/h3> – satisfies your Phase III appetite …… 9M2CR 116

The Code Pet<\/h3> – a Morse tutorial for Commodore’s computer …… AA0G 126

No More Two-tone Sidetone<\/h3> – modify your AEA keyer …… KA1LR 128

Monodes<\/h3> – harbinger of a new age …… Corner 130

Breaking the Decibel Logjam<\/h3> – how to cope with nothingness …… Sara 136

Less Drain Is Your Gain!<\/h3> – power saving mods for the Wilson II and IV …… KA3W 138

A Positive Supply with a Negative Chip<\/h3> – one Way to solve the parts problem …… K9MLD 142
\n
\n

73 Ham Radio Today Issue January 1982<\/a>
<\/h2>\n

Egad! A Nine-tube Linear<\/h3> – results from the W7CSD test bed …… W7CSD 12

Drama on Mt. McKinley<\/h3> – ice snow and amateur radio …… W7KUF 18

The Simplex Autopatch<\/h3> – a telephone interface for everyone’s two-meter rig! …… WA7VZR 26

The Cheapskate<\/h3> – a checker for bargain diodes …… K9QLL 30

Constant Current from a Voltage Regulator<\/h3> …… WA4WDL 39

The Hesitator: A Windshield Wiper Control<\/h3> – a rainy day project …… N4UH 40

TVRO Signal Source<\/h3> – tuner-based test gear …… N1BEP 46

Satellite Television Glossary<\/h3> – part II Satellite Television Handbook …… Staff 54

Going Bird Hunting?<\/h3> – Satellite Central part III …… Gibson 60

Micro-programmed Controllers<\/h3> – bridging the gap between TTL and microprocessors …… K2OAW 68

Messages from Station Charlie<\/h3> – when wireless meant life or death …… Phenix 88

The Great Compromiser<\/h3> – Henry Clay eat your heart out …… W5JJ 104

Touch-tune with Thumbwheels<\/h3> – cast away darkness …… ZL4LM\/vK3CIT 110

Put Talking Time on Your Repeater<\/h3> – a Sharp idea …… WA4VYR 116
\n
\n

73 Ham Radio Today Issue February 1982<\/a>
<\/h2>\n

The Fun-oscillator<\/h3> – a simple goof-proof vfo for your QRP transmitter …… WA0RBR 12

Build this Antennalyzer<\/h3> – you’ll need a weekend …… W1BG 16

Police Freqs for the TR-2400<\/h3> – a sleepless night for the mod squad …… N9AKX 26

Those Amazing Bobtails<\/h3> – the current-fed connection …… W1XU 30

Shoot the Moon!<\/h3> – visual tracking for your EME array …… W9CGI 34

CQ MARS de IC-2A<\/h3> – work new worlds …… WD8JLW 46

The Father of FM<\/h3> – the tragic story of Major E. H. Armstrong …… Hammond 50

The Art of Listening<\/h3> – audio accessories explored …… W8FX 64

A Dish Antenna Anyone Can Build<\/h3> – no hyperbole just a parabola …… W8DJY 88

Job’s Own LNA<\/h3> – rolling your own takes patience …… WA4CVP WA4OSR 92

Microwave Master<\/h3> – you might not need a mountaintop …… WB4APC 96

CW interface<\/h3> – let your computer do the copying …… W9JD 104
\n
\n

73 Ham Radio Today Issue March 1982<\/a>
<\/h2>\n

The Porta-peater The Instant Communicator<\/h3> – quick and easy does it …… WA2BHB AC2A WA2UNN 12

Amateur Television’s Stripper<\/h3> – a home-brew star …… VE3CYC 20

Polishing Kenwood’s R-1000<\/h3> – a gem in the rough …… K9EUI 34

Peaking and Tweaking Surplus CB Boards<\/h3> – the untold story …… WB0NPN\/8 38

OSCAR Pathfinder<\/h3> – a colorful way to track the satellites …… WB6NQK 46

Which TVRO Antenna Is Best?<\/h3> – Satellite Central Part IV …… Gibson 52

Home-brew a TVRO Downconverter<\/h3> – works with last month’s LNA …… WA4CVP WA4OSR 58

TVRO Q & A<\/h3> – advice from WB0POP …… WB0POP 62

Indian Hams Rejoice<\/h3> – import restrictions lifted …… Rama 64

Licensing for Americans Overseas<\/h3> – classes help but our government doesn’t …… KA3B\/dA2AL 68

The Masher<\/h3> – son of The Amazing Audio Elixir …… W5VSR 76

Innovation or Consternation?<\/h3> – recent patents dealing with radio …… AK0Q 78

Let’s Go Shopping<\/h3> – bagging the used gear bonanza …… WD4SKH 88
\n
\n

73 Ham Radio Today Issue April 1982<\/a>
<\/h2>\n

Watching the Weather<\/h3> – a cheap and easy conversion …… KA9GDL 10

The Sinkhole That Ate Winter Park<\/h3> – hams vs. hole …… KA4RUL 18

Operation Skywarn<\/h3> – tracking tornadoes with two meters …… WB5ZAM 24

Measure Ohms with Your Calculator?<\/h3> – yes and accurately too! …… Johnson 28

Scanning with the IC-280<\/h3> …… N7AAD 36

Detect Killer Tornadoes<\/h3> – use an ordinary TV set …… K2VJ 50

TVRO Dish Selection Tactics<\/h3> – Satellite Central part V …… Gibson 54

Taylor Howard: TVRO Trailblazer<\/h3> …… N8RK 60

TVRO Q & A<\/h3> – advice from WB0POP -part II …… WB0POP 62

VHF Converter<\/h3> – easy to build yet state of the art …… Edwards 68

Compugrams Are Here<\/h3> – BASIC message handling …… WA6ZZL 76

Flash and Crash 101<\/h3> – how to weather the storm …… K1NYK 94

Stormy Weather<\/h3> – to be forewarned is to be forearmed …… W9CGI 102
\n
\n

73 Ham Radio Today Issue May 1982<\/a>
<\/h2>\n

Pacific Odyssey<\/h3> – the Kingman\/palmyra adventure …… KB7NW 12

Top-Notch for Top Band<\/h3> – super antennas for 160 …… N3BEK 26

The Fun-amp<\/h3> – 20 Watts out …… WA0RBR 32

The CCD Antenna Revisited<\/h3> – does it measure up on 40m? …… W4ANL 40

Antenna-raising: The Good-Neighbor Policy<\/h3> – sidestepping civil war …… AK5Q\/4 42

‘Lite Receiver IV<\/h3> – part I: building it is a breeze …… WA40SR WA4CVP 48

TVRO Sound Decoders<\/h3> – Satellite Central part VI …… Gibson 58

Omni-gain: A Collinear for 70 and 23 Cm<\/h3> – coax comes alive …… WA6SVT 64

Fighting Air Pollution<\/h3> – why you need a tuner …… W2AET 68

Americanizing the German Quad<\/h3> – the world’s best antenna? …… WA3GWY 76

Zepp and Sons<\/h3> – an end-fed 1\/2-wave antenna …… W1CV\/4 96

Surviving the Unthinkable<\/h3> – part I: the ham’s role …… AK0Q 110
\n
\n

73 Ham Radio Today Issue June 1982<\/a>
<\/h2>\n

Build This Digital Vfo<\/h3> – a microprocessor makes it simple …… WA5VQK 12

Surviving the Unthinkable<\/h3> – part II : some practical ideas …… AK0Q 30

A Split Personality for the KDK FM2015R<\/h3> …… K0BV 40

Building for Beginners<\/h3> – happiness is a hot soldering iron …… N1II 42

Coping with PC Boards<\/h3> – it’s not easy to be virtuous …… KC7M 48

‘Lite Receiver IV<\/h3> – the second half …… WA4CVP WA4OSR 52

TVRO Transducer<\/h3> – waveguide-to-coax transition …… WA4CVP WA4OSR 58

The MTV Music Box<\/h3> – Satellite Central part VII …… Gibson 60

Tune In the World’s Tinderbox<\/h3> – SWLing from Cairo to Kuwait …… Peterson 66

Are You Ready for 900 MHz?<\/h3> …… WB4LNM 74

Crime-stoppers’ Textbook<\/h3> – rules of thumb for would-be gumshoes …… Diefenbach 84
\n
\n

73 Ham Radio Today Issue July 1982<\/a>
<\/h2>\n

Log of the Colorado Queen<\/h3> – wet wild Field Day fun …… K3PUR 12

CB to CW?<\/h3> – converting the Hy-gain board …… W1BG 18

Hands Across the Water<\/h3> – CW lives on historic Cape Cod …… KAID 38

A Three-piece CP<\/h3> – battery not included …… WB5WAF 46

Coherent CW for VHF<\/h3> – will it work? …… W3QVC VE3DPB 48

Electric Health via Negative Ions<\/h3> – combating an invisible menace …… WB0GX 52

The Very Very Best CW Filter?<\/h3> – costs under ten bucks …… WB4TYL AG5G 56

The True-blue Keyer<\/h3> – its speed readout doesn’t lie …… W3BYM 60

Touch-type CW<\/h3> – with your TRS-80 …… K8TT 64

CW -the Air Force Way<\/h3> …… Metzler 72

TVRO: Georgia Style<\/h3> – one man’s junk is another man’s antenna …… N8RK 96
\n
\n

73 Ham Radio Today Issue August 1982<\/a>
<\/h2>\n

Poor Man’s Spectrum Analyzer<\/h3> – another 73 breakthrough …… WB5IPM 10

The AC4YN Story<\/h3> – a Tibetan adventure circa 1936-1937 …… G5YN 32

“Smart” Squelch for SSB<\/h3> …… W9MKV W9YAN 44

The Ultimate Fuse<\/h3> – ac overload protection …… W2OLU 52

Multi-purpose Peak Adapter<\/h3> – don’t settle for being average …… K9EUI 54

The $100 TVRO Receiver<\/h3> – Satellite Central part VIII …… Gibson 60

VUM: Volume Units Meter<\/h3> – makes measuring decibels easy …… W4MLE 72

Analog Isn’t Dead<\/h3> – don’t be LED astray by the digital revolution …… WB6AFN\/9 76

Line Voltage at a Glance<\/h3> – at last a useful gadget …… W4RNL 84

Confessions of a Counter Evolutionary<\/h3> – the best circuit yet? …… WA2FPT 100
\n
\n

73 Ham Radio Today Issue September 1982<\/a>
<\/h2>\n

Micro Modem<\/h3> – a RTTY TU designed for computers …… WA4CKQ 10

F1 for the Hot Water 101<\/h3> -all the way with FSK! …… K0JH 20

No-frills RTTY<\/h3> – $2OO and you’re on the air …… WA4STO 24

Incredibly Simple RTTY<\/h3> – receive it on your TRS-40 …… WQXI 28

The RTTY\/tri-bander Marriage<\/h3> – enjoy the 100% duty cycle …… K0ARC 32

Confessions of a Counter Evolutionary<\/h3> – part II …… WAZFPT 38

Double Trouble 0n 50 MHz<\/h3> – Home-brew Contest runner-up …… KL7CLK 58

The $100 TVRO Receiver<\/h3> – Satellite Central part IX …… Gibson 60

Digital Basics<\/h3> – Part I …… K4IPV 72

The Vertical Deuce<\/h3> – 40 and 75 meters …… W9CRC 80

The J-pole Love Affair<\/h3> – not for CB …… WB5AOX 84
\n
\n

73 Ham Radio Today Issue October 1982<\/a>
<\/h2>\n

The Splattometer<\/h3> – visual overmod warning …… W1BG 10

Digital Basics<\/h3> – part II …… K4IPV 20

Dissertation Upon Roast Pig<\/h3> – the ultimate in surplus? …… N6TO 28

Got an Apple? Want RTTY?<\/h3> – try this hard-core interface …… WB6FBN\/4 34

The Pleasures and Perils of Crankup Towers<\/h3> – don’t lose your head! …… K4TWJ 40

The Incredible Antenna Mark 2<\/h3> – a complete HF allbander in a very small space …… KL7ISA 44

The Amazing Beam reader<\/h3> – point it with your Pet …… WA4NAG 46

Try the GHz Getter<\/h3> – a marvelous microwave antenna you can build …… WA4WDL 50

The Multiband Vertical<\/h3> – an aesthetically pleasing antenna with a punch …… W1GV\/4 54

The Campbell J<\/h3> – a little antenna that “can” …… W4YVY 60

Avoid an Electrical Nightmare<\/h3> – sidestepping ground faults …… N4UH 64

Fine-tune Your IC-280<\/h3> – 15-kHz step rate got you down? …… KS4B 68

A Gem of an RIT<\/h3> – customizing the receive on the 56-104 …… KK5R 70

Protect Your Pass Transistors<\/h3> – the crowbar connection …… K8JL 76

All Tied Up in Knots?<\/h3> – the twisted tale of Thomas J. O’Harra …… KC7M 78

The Coax Matcher<\/h3> – it may be all the tuner you need …… W9PJF 84
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\n

73 Ham Radio Today Issue November 1982<\/a>
<\/h2>\n

A Perfect “10”<\/h3> – Timer counter logic probe – 10 functions in all. That’s the Multi-board One and you can build it …… WA2BHB 10

Remote Control Your IC-701<\/h3> – Simpler than commercial controllers this home-brew circuit nevertheless features push-button band changing and frequency selection scanning and expanded coverage …… N2GW 14

Automatic Beam Aimer<\/h3> – Here is the scoop on adding set-and-forget convenience to your rotator control. Works with most common control boxes …… K9AZG 22

Life Support System For HTs<\/h3> – At home or in the car this do-it-yourself charger and accessory box could be the best friend your handie-talkie ever had …… WB6BHI 26

What? Another Audio Filter Project?<\/h3> – Yep. And even the most modern receivers benefit from this QRM-crusher …… W4MLE 32

A Tuner For Antenna Fanatics<\/h3> – Anyone experimenting with antennas needs a darn good tuner. Construct this one and save your finals …… Staff 42

Digital Basics<\/h3> – This is no time to be a digital illiterate. Part III reveals the secrets of multivlbrators shift registers and other notorious devices …… K4IPV 46

The Money-maker Power Supply<\/h3> – Need 12 volts for your transceiver? Save half the cost of a commercial unit by assembling this 25-amp monster …… WA6TTY 56

TVRO Q & A: Part III<\/h3> – LNAs are expensive but rolling your own is a losing proposition …… WB0POP 64

The Sound of Silence<\/h3> – Beep!! Your TS-180 is off the air Charlie …… HB9BLU 70

Build the Re-fuser<\/h3> – It’s a self-replacing fuse. Why blow one when you can blow two? …… K5CN 72

No Smoking in the Ham Shack<\/h3> – Overvoltage kills solld-state finals Protect yours for $1.00 …… N7JJ 74

Tempo MARSer<\/h3> – Get the S-1 off those crowded ham channels. Expand your coverage above and below the amateur band …… WB6IQN 76

CW and the Apple II<\/h3> – The simpllcity of BASIC plus the speed of machine language equals a near-perfect Morse keyboard …… N5MR 84

Everyman’s Audio Amplifier<\/h3> – Make this one chip amp a permanent part of your test bench. It’s an easy project for beginning experimenters …… W3KBM 90

Award-winning Program<\/h3> – Certificate hunters cut your paperwork down to size. Let your Pet track your quest for excellence …… WB2GFE 94

Speed Demon<\/h3> – How fast was that? Find out with this wpm display for Heath’s 1410 keyer …… K4ZHM 102

Keyer on a Shoestring<\/h3> – Hams are cheap and so is this keyer. Big spenders will build the deluxe two-chip version …… WB5PPV 104

I Got My Ticket! Now What?<\/h3> – A look at what Elmer forgot to tell you …… N1II 106
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73 Ham Radio Today Issue December 1982<\/a>
<\/h2>\n

The Hangman’s 2-meter Collinear<\/h3> – Make your tower do double duty. Drop this array from the top and get 6-dB gain …… W1GV\/4 10

Deep-six Squelch Tails<\/h3> – Kerchunks take a dive with the addition of this audio delay …… WA2NYE 14

Build Yourself A Paralyzed Beam<\/h3> – Go from east to west In less than a second with this 2-meter array. And put your rotator out to pasture …… WB2WIK 24

Taming the 2-meter Linear<\/h3> – It lives In the forest of spurious oscillations and answers to the call of the correct bias. Catch one for yourself …… VE3LMP 28

The Frugal Floppy Bazooka<\/h3> – This 2-meter antenna coils up into a small package but it shoots a straight signal …… N7BGZ 32

Taking It Higher<\/h3> – Raising a repeater’s antenna is the way to wider coverage right? Wrong …… W4MLE 36

Dial-a-frequency<\/h3> – Let your fingers do the walking with this remote control. All you need is a spare telephone …… K1WGN 44

Improving God’s IDer<\/h3> – Put more flexibility the K2OAW circuit and save the advantages of the original …… K9XI 51

The Bunesti Caper<\/h3> – The two British agents needed a power amp-fast. Could the American ham build one? …… W9PJF 56

The Tube Returns<\/h3> – Move over ICs This receiver is easy to build cheap and works like a dream …… W1BC 64

The Program That Knows It All<\/h3> – Repeater info third-party agreements you name it-this TRS-80 BASIC program knows it …… W8XW 72

Berserk Direction-finding<\/h3> – Zero In on transmitters in seconds with this TRS-80 program. It will tell you how to get there too …… WD8CBE 76

Shack from Scratch<\/h3> – Building a ham shack in a new home can be a breeze. Just plan ahead …… W2XQ 84

Winning the Coax War<\/h3> – The electrical length of feedline depends on its velocity factor. Don’t get caught short …… W9PJF 90

Red-hot and Ready to Go<\/h3> – Anyone who has ever soldered knows that the cord gets in the way. Find freedom with this homebrew cordless iron …… W7RXV 101

Cutting Current to Size<\/h3> – Measuring large ac currents can be difficult unless you know a trick or two. W7CRY explains how …… W7CRY 108

Construct This All-american Audio Signal Generator<\/h3> – The perfect project for starting a test bench or rounding one out …… WA2SUT 116

Maximum Modulation for CB Conversions<\/h3> – Many CB rigs lack the gain for full modulation. This preamp will help …… AJ0P 122
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\n

73 Ham Radio Today Issue January 1983<\/a>
<\/h2>\n

Action Machine for 20<\/h3> – Are home-brew rigs a lost art? No yet! Here’s an SSB transceiver you can build …… WB5IPM 12

An Alarming Procedure<\/h3> – This false-proof repeater emergency alert won’t tie up expensive equipment …… WA1LCF K1FNX 24

Trimming the Fat from ATV<\/h3> – Why use 3 MHz when 500 kHz will do? WB6FHD proposes a way …… WB6FHD 32

The Forgetful Autodialer Puzzle<\/h3> – Even Sherlock couldn’t figure out how to make an autodialer that reprograms with no hardware changes Elementary says dear Babe …… W7BBX 40

My Own Silver Mine<\/h3> – For W1FLP reclaiming silver fromphotographic fixer is cheap easy and profitable. King Midas should have had it so good …… W1FLP 46

Fun-equipment Revisited<\/h3> – Here are higher-band versions of the ever popular Fun-mlitter and Fun-amp. They are based on the Fun-philosophy: cheap and simple …… WA0RBR 48

The Ultimate Breadboard<\/h3> – There used to be two styles of prototypes- rat’s nest and cramped. Now there is a third style -simple …… N6BW 52

Beating the Untraceable Buzz<\/h3> – Man-made Interference doesn’t have to destroy reception. Not when you use W1GV’s buzz-beating antennas …… W1GV\/4 56

The Care and Feeding of Optoelectronics<\/h3> – There are many ways to make these devices earn their keep Here is one …… K3VDB 62

International Success Story: The BBC<\/h3> – From its battery of transmitters the BBC fires a dally salvo of news and entertainment around the world. No commercials either …… Peterson 68

Active-filter Design Made Easy<\/h3> – Using this BASIC program if you don’t like the design then scrap it. All you lose is a few seconds …… WD4HPC 78

The Cornerstone of Equipment Failure: Heat Damage<\/h3> – The proper heat sink will preserve transistors. Learn how to keep your circuitry from resembling a core meltdown …… Shamburger 84

Your January Home-brew Project<\/h3> – No frills-just a sold $10 SSB exciter for HF Who says hams don’t build anymore …… VE7DOD 92

King of the Pulse Generators<\/h3> – One-shot or a train TTL or CMOS this generator will fit the bill. It’s just what your test bench always wanted …… WA3RJS 10
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\n

73 Ham Radio Today Issue February 1983<\/a>
<\/h2>\n

Unleash the TS-900<\/h3> – A rig like this deserves more room than 2meters can give. Get on HF (including WARC bands) with this transverter …… W4BF 10

Four-tone Audio Oscillator: A Potent Troubleshooter<\/h3> – For any test that requires a tone this oscillator does the job It can also be computer-controlled …… W7BBX 20

Superman’s Repeater Control System<\/h3> – This simple system offers four independent on\/off outputs. Just duck into any phone booth to use it …… K3IJ 32

Up and Coming: Direct-broadcast Satellites<\/h3> – The only thing not up in the air in this business is the satellites so this budding technology is not just pie in the sky …… N8RK 38

Work the Russian Robot Ops<\/h3> – The robots aboard Russia’s two new satellites are cantankerous and challenging. Here are some tips on how to work them …… K4TWJ 44

Ham Radio Hits the ’82 World’s Fair<\/h3> -when the gates In Knoxville opened would WA4KFS be ready? Here’s the inside story of the World’s Fair station …… N4AQI 50

Beef Up Your CB-to-cW Conversion<\/h3> – A good bfo will bring your receiver performance up to par. This one is easy to add on …… W1BG 56

The Denali Connection<\/h3> – Disaster struck these two hams in the back-country of Alaska. Only a tenuous radio link to civilization could save them …… KL7RD 60

Error Protection for Your Digital Transmissions<\/h3> – Block coding can make your signal 100% error free …… W9JD\/2 64

Drive-time SWLing<\/h3> – This simple car radio converter will open up a whole new world of driving …… AG9C 70

Stop That Heist!<\/h3> – What would you say about an alarm that’s portable inexpensive and goes off when a thief just touches the doorknob? We say build it …… WD5JWY 72

Get the DX Edge!<\/h3> -there are ways to stand out in the pileups for Spanish-speaking stations. One is to speak their language …… KB9SP 76

Power-line Protection: The Weak Link<\/h3> – Solld-state equipment may be extremely reliable but just microseconds of overvoltage can change that …… N8ADA 83

Higher Voltage Less Weight<\/h3> – A voltage quadrupler that weighs ounces? You bet-and cheap surplus capacitors make it possible …… W7CSD 84

Make Room for More Agc<\/h3> – Automatic gain control is useful In many applications. With this simple circuit you’ll never have to be without it …… N7APE 86

You Can Troubleshoot Mobile Noise<\/h3> – K5CA tells what to do when a signal IS 5-7 and the noise is 5-9 …… K5CA 88

Electronics vs. Creepy Crawlers<\/h3> – Build this ultrasonic oscillator and drive pests crazy. Your pet hamster too …… K7YZZ 90

Slimming and Trimming the R-1000<\/h3> – In crowded conditions the 6-kHz filter may not cut the QRM. Here’s the way out …… 5Z4CL\/k5PAW 92

Add a Touch of Class to CB Conversions<\/h3> – Converting a Hy-gain board to 10 meters is only half the story Try addling a digital readout and scanning capability …… N2DS 94
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\n

73 Ham Radio Today Issue March 1983<\/a>
<\/h2>\n

RTTY Tuning: The New Solution<\/h3> – This simple tuning indicator whipped the competition and took first place in 73’s Home-brew II Contest …… WB2OSZ 10

Uncover Equipment for OSCAR Phase III<\/h3> – lurking in flea markets and junk boxes is everything you need to work OSCAR. K6KLY tells what to look for and how to make it work …… K6KLY 18

Up and Coming: Direct-broadcast Satellites<\/h3> – Part II looks at the technical problems with communications at 12 GHz which may be a offset by the advantages …… N8RK 26

The Fun-vac: A Synthesis of Old and New<\/h3> – This one-tube transmitter combines the circuits of the fifties With the technology of the eighties. It also keeps your coffee warm …… WA0RBR 32

Adventure in Sarawak<\/h3> – Two DXpediuoners journey to the land of headhunters – and send a signal to the rest of the world …… VK9NL 42

Put 2 Meters in Your Shirt Pocket<\/h3> – Radio Shack’s Pocket weather radio makes a dandy 2-meter receiver. A few quick modifications will get it right on target …… K3PJG 46

The Secret Telemetry of OSCAR 8<\/h3> – Do those numbers from the sky mean anything? You bet …… K5OM 52

Scandinavia: The 2-meter Dream Vacation<\/h3> – Licensing frequencies and procedures- it’s all here. All you need is a plane ticket …… WA6OGW 58

Twisted Remote Control<\/h3> – This circuit is easy to build and easy to use. The twist is that you probably own the most important part …… WD5JWY 64

Take Your IC’s Temperature<\/h3> – Like people solid-state devices get sick if they get too hot. W3KBM provides a way to answer the burning question “How hot is hott” …… W3KBM 70

The Q-master Cavity Filter<\/h3> – A high-q filter that uses no copper and no silver-plating- just coffee cans and some ingenious thinking …… KB6AL 74

Push Your Radar Detector to the limit<\/h3> – Without this simple modification you won’t know what you are missing – until it’s too late …… W5LFM 86

Personalize the M600 RTTY Program<\/h3> – Now you can design and save your own version of this popular software parkage. All it takes is a POKE or two …… VE4AFO 94
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73 Ham Radio Today Issue April 1983<\/a>
<\/h2>\n

Pedal Power: A Perfect Field-day Generator<\/h3> – This bicycle-driven power source is easy to build and guaranteed to get you in shape. No heavy breathing into the mike please …… KN6H 12

No-crash Autopatch<\/h3> – Dialing and driving don’t mix. Build this autodialer and let its fingers do the walking-not yours …… W3ZC 20

Turn Mobile-rig Whine into a Whimper<\/h3> – From brute-force filtering to solid-state regulation K4AJQ has the answers to mobile noise …… K4AJQ 30

Exploit the Hidden Interfaces of the TRS-80<\/h3> – Sound synthesis a programmable timed on-off switch and a CW keyer are all hidden in the TRS-80 You just have to look in the right place …… WB9EGA 32

New England’s Nicad Per-charger<\/h3> – Build this and get state-of-charge readout automatic shutdown and charge maintenance for your HT. This could be the gift of life for your battery pack …… K1QPS WA1UNU 38

Immortalize Your IC-2AT Battery Pack<\/h3> – Why waste your nicads when you’re in the car? Build this miniature power supply and your batteries will last forever …… KP4AQI 40

Unlock the New Electronic Mailboxes<\/h3> – MSOs are at the forefront of amateur radio’s vast communications revolution. WB7QWC shows you how to tune In log on and not drop out …… WB7QWC\/9 44

How E.T. Really Called Home<\/h3> – If it were not for an inventive ham E.T. might still be trying. In this exclusive article the designer of the little guy’s communicator unveils its Inner workings …… K2SSQ 52

Buyer’s Guide to Dayton<\/h3> – From securing accommodations to planning your expenses WA4BPI helps you make the most of your Hamvention buck …… WA4BPI 56

The Best Way to Mount Your Mobile Rig<\/h3> – If you have a van and HF gear this is what you need to put them together- including a movable mount …… KE7X 64

The Florida T-r Switch<\/h3> – Get your 2m amplifier out of the way- without a relay …… W4HJW 83

Build the Deadeye Dish Controller<\/h3> – Tired of taking potshots at satellites? With the flick of a switch this easy-to-build rotator will hit the bull’s-eye every time …… W5JG 84

The Ultimate Protection Plan for Your HT<\/h3> – Bangs bumps scrapes and crashes make life tough for HTs. Make these modifications to protect your investment …… K2YKE 92
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73 Ham Radio Today Issue May 1983<\/a>
<\/h2>\n

Construct This Classic Transmitter<\/h3> – From the era of the tube comes this ageless design runner-up In 73’s Home-brew II Contest. It’s perfect for a flrst project or as a backup rig …… W1BG 14

Build the Revolutionary Parastat<\/h3> – After some rule-bending and wire-straightening N6LM discovered the parastat antenna It has gain when you want and a null when you don’t …… N6LM 24

Talk Softly and Load a Big Stick<\/h3> – Turn a six-foot stick Into an antenna that will ramrod your signal into the ether. And when you’re off the air you’ve got a coat rack …… KC2NT 26

Build This Cornerless Quad for 2 Meters<\/h3> – Here’s an antenna that you can cut corners on All you lose is high cost …… K6KTS 30

Tuned Feeders for Oddballs<\/h3> – To get that good DX you’ve been missing add some versatility and multiband capability to your wire antennas …… W0VM 38

Condo Secret Agent<\/h3> – The word at many condominiums is “no antennas allowed.” Here’s how one ham survived …… K0REC\/4 44

Make the Icom 720A Work for You<\/h3> – This rig knows when you change bands so why not let it switch your antennas? Build this simple add-on and let your voltage do the work …… N4BL 46

The New Communications: VHF Mailboxes<\/h3> – Join the growing wave of hams using digital techniques to get their message across. AF2M describes the (log) ins and outs of mailbox systems …… AF2M 48

The Morning Beverage Antenna<\/h3> – If you are a coffee drinker and you work 2 meters you’ll love this antenna. W4FXE shows you how to get wide bandwidths and small size at low cost …… W4FXE 54

Try Out a Low-level Lazy Loop<\/h3> – It may be only 10 feet up but this aerial is no worm-burner. Better still it will fit almost anywhere …… W1XU 56

Gin Pole for Peanuts<\/h3> – Ever pull yourself up by the bootstraps? Build this gin pole and let it do the same for your tower …… N4UH 58

Coax Connector Workshop<\/h3> – Tracking down feedline-related problems can make strong men cry. By starting out right you can avoid hassles …… N1BLH 60

Make Your Noise Bridge Even Better<\/h3> – Use these shortcuts for easy calibration and give your transmitter 1:1 vision …… K4KI 64

Antenna Refinishing the Easy Way<\/h3> – When a vertical begins looking like a rusty downspout it’s time for some maintenance. Here’s how K6EW saved a hamfest special …… K6EW 70

73 Cents for a Voltage-transient Detector<\/h3> – Forget those expensive and complex Insurance policies Here’s the best protection you can get-and the cheapest …… WB8OWM 83

Build the Armchair Satellite Tracker<\/h3> – Simple and cheap this setup will follow OSCAR around like a dog. Put it together lean back and let this control system do the work for you …… K3LF 84
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73 Ham Radio Today Issue June 1983<\/a>
<\/h2>\n

D’Arsonval Dossier<\/h3> – How these meters work and how to make them work for you is no mystery. Discover the inner machinations of the D’Arsonval movement for yourself …… W1OLP 20

Save Money on Used Meters<\/h3> – Does it work or doesn’t it? This simple tester spots real hamfest bargains …… W3QOM 19

Live From Across America-it’s Field Day!<\/h3> – The Corpus Christi Amateur Radio Club had helicopter TV coverage of its activities. Club member WB4EMI unveils the secret behind their success …… WB4EMI 22

Construct the Cyclops Dip Meter<\/h3> – W4ATE’s unique single-coil design captured an Honorable Mention in 73’s Home-brew II Contest. Now you can build this award-winning circuit for yourself …… W4ATE 26

Be the First on Your Block with a 2-meter Dipole<\/h3> – A few safety pins some wire and a little rod stock will make a portable antenna perfect for the traveling ham …… W9HD 30

Two Meters for the Price of One<\/h3> – The oft-ignored shunt principle will turn an everyday junk-box meter into a surprising supermeter. The key is a piece of solder …… KB2JN 34

Strangle QRM with Your TS-830s<\/h3> – Simple filter modifications will help your Kenwood choke out Interference KA2R gives you the lowdown on how to do it …… KA2R 36

Smart Meters: The New Movement<\/h3> – Turn your passive meters into active error-correction systems. W4RNL’s innovative circuits make it a snap …… W4RNL 42

A QSL Assembly Line of Your Very Own<\/h3> – The problem: a stack of QSL cards as high as Mt. Everest. The solution: a program that will make your TRS-80 climb the mountain …… WB8JEY 48

Get Accurate with the Digital-grid Power Meter<\/h3> – Your final input power is instantly accessible with this easy add-on …… N1II 50

Diary of a Partially-sighted Ham<\/h3> – Eyesight is not a black and white issue. Here are some tips for hams in the grey area …… WA6CNN 54

Hot-spot Metering-automatically!<\/h3> – Here are money-saving designs that will let one meter do the work of several. Keep in control and keep your change too …… W4RNL 56

Build the Weather-grabber<\/h3> – Don’t know why there’s no sun up in the sky? With this simple converter you can listen to National Weather Service forecasts on your 2-meter rig and find out …… N1II 84

Kill Power-line Interference<\/h3> – You don’t have to be a big-game hunter to find the source of that annoying noise. All you need 1s your rig and your good hamming habits …… K3UK 92
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73 Ham Radio Today Issue July 1983<\/a>
<\/h2>\n

You Can Build This Code Trainer<\/h3> – More than a mere code-practice oscillator this CPU-controlled trainer features burned-in practice groups Flick a switch and you have a keyer …… K7ZOV 12

The True Story Behind Heard Island<\/h3> – Fighting bad weather shady ship owners and bad press the HlDXA expedition forged its way to the DXer’s dream. But getting there was only half the battle …… VK9NL 20

More Stable Than a Rock<\/h3> – An Honorable Mention winner in 73’s Home-brew II Contest this 10-mHz generator is a sure cure for the drifting frequency blues …… DJ3NW 32

Build the Billboard Keyboard Keyer<\/h3> – Get perfectly-tuned CW without a buffer. Then join the crowd at 60+ wpm …… KD7S 44

Construct the Lead-foot Key<\/h3> – If you like your CW In the fast lane you’ll love this key And it is guaranteed not to slip any speed …… W5JQE 48

The $2 Infinite-memory Keyer<\/h3> -take a break Your cassette recorder will send any message for you …… W0XI 50

Apple Morse and You<\/h3> – Simple software and cheap hardware make for a great CW keyboard recipe Just add one operator …… AF2M 54

Micro McElroy<\/h3> – Is Pet BASIC fast enough for solid CW copy? You bet-and this program will work miracles with a sloppy fist …… VK3BHM 56

QRP Keyer for Misers<\/h3> – Get machine-perfect code with this keyboard. All it costs is 30 mW and a few dollars…… VE7DHD 58

The Easy FIFO Keyboard<\/h3> – First in first out means you type as fast as you want to. It will send at the speed you set…… N7BH 64

Down-under Depth Sounder<\/h3> – Get your feet wet with this Australian construction project We promise that you won’t get In over your head …… Harleck Dawson 82

The ROM-less RAM-less CQ Sender<\/h3> – Automatic CW can be yours for the price of a few diodes. And you can reprogram without spending a dime …… VU2VIZ 90

Yasme and the Call of Abu Ail<\/h3> – It was just a speck in the Red Sea but it created pileups as big as a mountain …… W6KC W6QL 94
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73 Ham Radio Today Issue August 1983<\/a>
<\/h2>\n

Construct This Customized Power Supply<\/h3> – Whether you want 5 Amps or 30 this supply can give it to you. But you only pay for what you need …… W9ODK 8

VisiCode: The VIC 20 Way to Extra Class<\/h3> – First you get random practice groups Then you get the answers …… W7LTH KA7AQA 14

Running Scared at Spratly<\/h3> – Only steel nerves and luck stood between the 1979 DXpeditlon and disaster …… KB7NW 20

The COR of a Reliable Repeater<\/h3> – Carrier-operated relays are the most-used circuits In any repeater. Use this simple design to get maintenance-free operation …… WA7SPR 24

Precision Speed Control for the Billboard Keyer<\/h3> – Get more for your money by addling this circuit to last month’s project …… KD7S 26

PC Boards for Penny-pinchers<\/h3> – Get picture-perfect circuit boards without buying a darkroom …… W2HCQ 30

Faultless SSTV Picture Preservation<\/h3> – The dynamic duo of computer and printer helps save those perfect moments. Just add this program …… KF9X 38

Save Your Signal with Forward Error-correction<\/h3> – In a hostile signal environment you need all the help you can get …… W9JD\/2 44

A Colorado-style Battery Monitor<\/h3> – Texas has its barbecue and Chicago its pizza. Colorado’s claim to fame is this near-perfect device …… Wilson 48

The Totally-modified 2000<\/h3> – Take Azden’s popular 2-meter rig and add all the extras you ever wanted …… W1GV\/4 50

Send Your TR-7800 to Obedience School<\/h3> – This Kenwood rig has some interesting habits-such as a slow scan rate. Can you retrain it in one easy session? …… KE6VK 54

Do You Know Where Your Signal Goes?<\/h3> – it doesn’t just sneak off your antenna and hide. Find out where your lobes are and what they look like with this simple procedure …… N4UH 56

Cheap Scanning for the IC-701<\/h3> – Here’s a device that’s stingy in cost but generous in benefits …… AG9D 64

To Go Where No Ham Has Gone Before<\/h3> – Sealand! -an enterprising team of DXers takes to the high seas to work S1 the smallest country In the world …… DF2AO 84

1001 Uses for the 9400<\/h3> – Experiment WI-5 this cheap chip Ifs the IC you’ve always wanted with applications you’ve never dreamed of …… W3KBM 88

Propagation Explosion on 220<\/h3> – This theoretical inquiry into the properties of 220 MHz yielded some unexpected results. Find out when and why your signal will be at its best …… W9MKE 90

18 kV with No Transformer<\/h3> – You need high voltage but surplus transformers can’t turn the trick. Try this solid-state solution …… WA4WDL 94
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73 Ham Radio Today Issue September 1983<\/a>
<\/h2>\n

“10… 9… 8…”<\/h3> – Be ready when the Space Shuttle Columbia carries aloft the first astro-ham. Here’s the best way to contact this historic DXpedition …… WA6ITF 8

Join the Packet-radio Revolution<\/h3> – Get error-free high-speed communications -packet radio’s chief architect WA7CXD explains what it is and how it works …… WA7GXD 16

Be a RTTY Rembrandt<\/h3> – Put that award-winning shine on your RTTY pix with these tips from a RTTY artist’s sketchbook …… WA2OQJ 28

How to Increase Your QSOs<\/h3> – N6HYK’s seasoned advice will add spice to your CW contacts-even if you aren’t a Novice …… N6HYK 34

Home-brew an Apple Computer and Save!<\/h3> – In this 73 exclusive KB2CA reveals the secrets of Apple construction From key board to motherboard it’s all here …… KB2GA 40

Build This Super Switch<\/h3> – The only thing this switch won’t do is brew your coffee It’s the lazy mans delight …… K4YS 52

The Amazing Cylindrabola<\/h3> – This microwave antenna is easier to build than a dish But it works just as well …… WA4WDL 54

Colorful RTTY: An Advanced System for the TRS-80C<\/h3> – It’s all here-a TU program and modem to turn your CoCo into a professional-quality RTTY terminal …… K6AEP 58
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73 Ham Radio Today Issue October 1983<\/a>
<\/h2>\n

Six Antennas from Three Wires<\/h3> – With these modified Beverage antennas you double your directions without doubling your cost …… K1VR N1RC 10

Join the Packet-radio Revolution -part II<\/h3> – Warm up your soldering irons. This part offers the nuts and bolts of building your own TNC …… WA7CXD 20

Become a Low-band Pioneer<\/h3> – Where does an audio transistor become a gccd rf amp? On 1700 meters of course …… KL7GLK 34

The Phantom Antenna of Possum Hollow<\/h3> – The boys needed a good antenna fast-before winter set in. Thurman’s mysterious story was the solution …… W8VFT 40

Your Enemy Feedline Loss<\/h3> – Let your swr meter stop this demon before it creeps up on you …… K3CSV 42

PVC Meets VHF<\/h3> – Flush high cost down the drain and build these cheap antennas. The gain is free …… WA2NUB 44

A 10-mHz Antenna for $10<\/h3> – If you’re still on 30 meters the Hanging Helix may be your last chance …… K9AZG 46

Slaughter’s Sway-bar Forest<\/h3> – Are trees an antenna hindrance? Or are they the means to the best antenna collection you ever had? It just depends on your outlook …… K9AZC 50

The Phase-shift Oscillator Goes Hollywood!<\/h3> – This circuit can be the star of your audio designs. All it needs is a tweak here and a taper there …… Goodson 54

Build the Harmonic Zapper<\/h3> – When the TV starts sounding like Donald Duck you need this 20-meter trap …… W2YW 56

The Anti-gravity Antenna-erection System<\/h3> – Now you can put your wire antennas as high as you want-maybe …… W0YBF 58

Your Own Beam-bruiser<\/h3> – Muscle your beam around from anywhere with this local control box it’s perfect for serious tower work …… WB4FXD\/1 62

Put Together the Shawnee Logic Probe<\/h3> – It’s better than a tomahawk when you’re on the warpath against glitches …… Roth 66

Take the Drudgery Out of Contesting<\/h3> – Let your Radio Shack computer dupe the log while you relax …… WB0NFX W0CZ 84

World’s Fair Super Squelch<\/h3> – With this two digit DTMF decoder-a perfect club project-you hear only calls meant specifically for you …… WA4TEM 86

Defuse RFI<\/h3> – A clean signal starts with a good earth ground. Make yours better with some coax and capacitors …… W0WUZ 88
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73 Ham Radio Today Issue November 1983<\/a>
<\/h2>\n

Construct the Callsign Power Supply<\/h3> – KAIQZ put together aesthetics and electronics to produce a power supply that gives you more than good regulation …… KA1QZ 10

The Magical Audio Filter<\/h3> – A variable frequency notch filter plus a peaking circuit will do wonders for your reception. And this project will almost build itself …… W6QIF 14

Keyboard Your Way to Happiness<\/h3> – If happiness is perfect Morse then this project is pure heaven. Special construction tips make putting it together as much fun as using it …… N7AGK 20

Reveal the Receiver Behind the Specs<\/h3> – Here’s a program that will make sense out of all those numbers …… N6RY 36

Terrific Top-band Conversions<\/h3> – Jump up to 160 meters and beat the coming sunspot drought. Surplus gear will get you there cheaply …… K9QLL 40

Cardsoft: The Transportable QSL Generator<\/h3> – If your machine runs Basic it can run this program …… WB5LLM 46

The Six-meter Vfo That Won’t Quit<\/h3> – This hybrid has the best of both worlds. It’s as steady as a rock and has broad-band tuning …… N7APE 48

Foolproof Logging<\/h3> – KL7CRF designed a logbook program that any TRS-80 owner can use. And if manages your QSLs too …… KL7CRF 58

The Program No Net Control Should Be Without<\/h3> – Every net generates lists. Keep yours up to date with this TRS-80 Basic program …… WA4VLE 62

The World’s Cheapest Modification<\/h3> – All you need to put the FT-101 on 30 meters is three pieces of wire. What could be cheaper than that …… WB9DDF W0UR 70

A Two-tone Squelch to Solve Your Scanner Woes<\/h3> – Selective listening is the key to success This squelch will help you cut the chatter …… WA3REY 84

Electronic Mail Comes of Age<\/h3> – These mailboxes may be thousands of miles away but they’re instantly accessible …… K0VKH 86

Octal Ingenuity<\/h3> – It’s an old radio. You can’t find a replacement tube Now what do you do …… W9SIA 88
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73 Ham Radio Today Issue December 1983<\/a>
<\/h2>\n

Code Practice: Have You Seen the Light?<\/h3> – This simple cpo is the best weekend project under the sun -or bulb …… Davidson 10

Unlimited Guarantee for Power Supplies<\/h3> – Plan for the worst and you’ll get the best says KC0EW. He might be right …… KC0EW 20

PC Boards in a Flash!<\/h3> – Make circuit boards without expensive equipment. All you need is a light and a fast switch hand …… KA1FJR 28

“We’ve Been Boarded!”<\/h3> -when the Lorelei strayed into Nicaraguan waters hams came to the rescue. Here the net results …… W9UUC 32

A Good-buddy Power Booster for Converted CBs<\/h3> – KE4VP turned an illegal amplifier into a law-abiding citizen. You can too …… KE4VP 36

TVRO Troubleshooting<\/h3> – Get your Earth station off the ground with these signal-enhancing hints …… N8RK 40

Streamline the IC-25A<\/h3> – Add a dual-speed vfo and remote control. You can do it in a few easy steps …… W2PQG 48

A Perfect Match for the HW-8<\/h3> – Heath’s little rig is the QRPer’s dream come true. So is 30 meters. Join them with this super-fast mod …… WA6BJH 52

Don Wallace: Superham<\/h3> – Meet W6AM the Grand Old Man of amateur radio …… W6CK 56

Courage for Would-be Hams<\/h3> – Here’s the inside story of how a worldwide network of hams is helping handicapped people get their licenses …… Norgard 70

Micro Power for the DXer<\/h3> – This TRS80 program will help you cure that DXCC fever …… WO4L 77

Warning: Your Time’s Up!<\/h3> – Don’t get taken by surprise. This timer add-on will tell you when to ID before it’s too late …… N7BH 78

Babysit Your Battery<\/h3> – This intelligent charging circuit will pamper your emergency power system It’s what every repeater needs …… WA4TEM 86

Make a Good L-meter Even Better<\/h3> – Give the N5CC design a boost. Tack on this two stage buffer and dodge those sneaky loading problems …… WB1HKU\/6 94

Ironclad Repeater Control<\/h3> – With 12 outputs and tamper-free access you can keep a firm grip on your repeater’s operations. And this circuit keeps the price from getting out of hand …… WA7SPR 100
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73 Ham Radio Today Issue January 1984<\/a>
<\/h2>\n

Breakthrough in Boston: The Birth of Crosslinking<\/h3> – Wl1UKZ built this box. It’s small and it works. The question is whether you’re ready for it …… W1UKZ 10

Grenada Log<\/h3> – With a body-bag rig and gas from a bike a ham hustled home the news. Here’s history happening …… K1XR N8RK 20

Instant Pane Relief<\/h3> – This is the only notch filter for windows we’ve ever seen. If you can figure it out you’ll beat the feedline flu …… KC8UD 22

Sound Off!<\/h3> – Here’s the perfect S-meter add-on for the repeater that has everything. The higher the beep the better the signal …… K3JML 28

Some Alarming Techniques<\/h3> – These burglar-proof circuits will stump second-story men and amaze possible thieves-as well as you …… WA4CCA 32

Join the Packet-radio Revolution -part III<\/h3> – Don’t mess up. Packet protocols and procedures are all-important says WA7GXD and he’s been right so far …… WA7GXD 36

The CW Stationmaster<\/h3> – Regeneration turns the worst signal into a CW symphony. And that’s not all you get when you build this station accessory …… W4RNL 46

Top Drawer Micro-style<\/h3> – Building circuits is fun but drawing them isn’t. Let your Apple do the drafting …… K3LF 56

Trade Secrets of Mobile Installation<\/h3> – Mounting a rig In your car is not as hard as it seems. Find out how the pros do it …… K4TWJ 64

Around and Around and Around<\/h3> – There’s got to be a better way to wind your coils to specs. Build the Q-meter and get the exact inductance you need …… N7APE 70

On the Move with 10 FM!<\/h3> – These modifications for Comtronix and Azden rigs will get you on your feet in a hurry …… W7AR 84

Thank You for Listening<\/h3> – Build this simple speech expander and stop shouting. Your DX friends will thank you and the QSLs will roll in…… VE1BZJ 86

Secrets of Nicads<\/h3> – Nicad batteries will save you money. Or will they? …… WB2FYW 88

The Edison Effect<\/h3> – American inventor Thomas Edison is remembered for his array of electrical firsts. But lesser known is his invention of the first wireless telegraph …… WB2MVK 90
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73 Ham Radio Today Issue February 1984<\/a>
<\/h2>\n

This Antenna Is Too Good To Be True<\/h3> – It’s cheap. It works well on all bands. And it radiates a super signal …… W4HDX 10

Construct the Minuteman Timer<\/h3> – As faithful as a grandfather cock. This timer tells when to ID – and when not to …… KA8QBQ 14

The Secret of Remote Control<\/h3> – In Inside those miniature planes lie some sophisticated circuits …… WB3BQO 18

Calculate Your FT-101<\/h3> – Here ‘s how to treat your trusty FT-101 to a truly automatic digital display and get a frequency counter in the same box-at the flick of a switch …… VK8DE 22

Strictly for FM Deviates<\/h3> – Ever wonder how the- modulation is on your FM rig? Try this simple deviation meter and find out …… KA8OBL 36

Build a Better Hamfest<\/h3> – These hints from 25 years of experience will help make your event a success …… Housholder 40

Caveman Radio<\/h3> – With underground inductive transmission 300 feet is almost DX …… W9MKV 42

Here’s the Split-second Timer<\/h3> – In the darkroom or the shack this beeper has 1001 uses. Its simplicity makes it the perfect beginners project …… WA3REY WA3PTU 54

Peak Your Picture with Home-brew SSTV Gear<\/h3> – Go from gray scale 10 color bars with these simple generators. No monitor should be without them …… Cikas 60

Op Art<\/h3> – Include the ubiquitous op amp in your next circuit KC0EW tells how …… KC0EW 62

Put the DX World on a Screen<\/h3> – Everything you need to know about a country can be at your fingertips you need is a VIC-20 and this program …… WB7RIX 69

Convert the Oddball Hy-gain Board<\/h3> – Some of these boards have two crystals and some have three. Now you can put them all on 10 meter FM …… N2DS 77
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73 Ham Radio Today Issue March 1984<\/a>
<\/h2>\n

In Search of the Shuttle: Fun Frustration Fatigue<\/h3> – From Maine to Hawaii our special correspondents gave W5LFL their best shots. Thank them …… W5LFL 10

<\/h3>W5LFL report Burbank California ….. K6DUE 10

<\/h3>W5LFL Contacts …… ARRL 11

<\/h3>W5LFL report Saugus California …… WA61TF 12

<\/h3>W5LFL report Westbrook Maine …… KlEFZ 14

<\/h3>W5LFL report Nashua New Hampshire …… WB1BRE 16

<\/h3>W5LFL report Lansing New York …… KO2X 20

<\/h3>W5LFL report Jacksonville Florida ……N4UF 22

<\/h3>W5LFL report Stone Mountain Georgia …… KA4AKQ 21

<\/h3>W5LFL report Tucker Georgia …… K4LDR 28

<\/h3>W5LFL report Dallas Texas …… KD5JO 28

<\/h3>W5LFL report Texas City Texas …… WB5ASA 30

<\/h3>W5LFL report Dayton Ohio …… WB8IFM 31

<\/h3>W5LFL report Stevensville Michigan …… KC8JX 34

<\/h3>W5LFL report Bloomfield . Indiana …… W9HD 36

<\/h3>W5LFL report St. Charles Illinois …… WD9G1G 31

<\/h3>W5LFL report Wheaton Illinois …… KO9G 38

<\/h3>W5LFL report Buena Vista Colorado …… W8FK 40

<\/h3>W5LFL report Encino California …… KB6WT KD6VG 42

<\/h3>W5LFL report Portland Oregon…… KZ7T 45

<\/h3>W5LFL report Portland Oregon …… N7AXC 49

<\/h3>W5LFL report Anchorage Alaska …… KL7FKO 50

<\/h3>W5LFL report Hilo Hawaii …… KH6B 52

<\/h3>W5LFL report Kaneohe Hawaii …… KH6HHM 52

<\/h3>W5LFL report Some Final Thoughts …… WA6ITF 53

Switch Tricks<\/h3> – Ever had trouble setting up switching? No more. The Minnetonka Master makes it easy …… KA0QSC 54

LED’s You Have Never Seen<\/h3> – What are these little lights? What do they do? This is the book …… W5LFM 58

Take the Two-tone Challenge<\/h3> – Does your transmitter put out a clean signal? Build this two-tone audio generator and find out …… W8DCC 84

Build the NASA Beeper<\/h3> – Space-wise communicators use this device for one good reason: clarity …… KQ4G 88

Sky Power<\/h3> – If you’re a meteor-shower expert don’t read this. Otherwise learn …… WB4CHZ 90

Wet Battery Quiz<\/h3> – And you thought you knew it all …… VE3AZX 92

Another Antenna Approach<\/h3> – This Timex\/sinclair program goes to great lengths …… AD1B 96
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73 Ham Radio Today Issue April 1984<\/a>
<\/h2>\n

Doing It At Dayton<\/h3> – This unofficial Hamvention handbook helps attendees and dreamers alike …… WA4BPI 10

Me and My Stupid Old PMOS Converter<\/h3> – At last there’s an easy way to get -12V from a +5-v power supply. Who said “trial and error”? …… WB1HKU\/6 14

Watch That Signal!<\/h3> -haul out your old oscilloscope and turn it into a signal monitor. The conversion is easy and the price is right …… W4RNL 20

Digital Design: How to Interface ICs<\/h3> – Connect ICs to the outside world with these hints from the author of “Digital Basics” …… K4IPV 30

Emulate an EPROM Elephant<\/h3> – The portable RAM-faker never forgets. Well hardly ever …… McCarthy 40

Crystal Microwave<\/h3> – “Easedropping” on this part of the spectrum is up to you. Here is a simple way to start …… WA4WDL 42

Take A Trip to Europe<\/h3> – These tips from the world’s top SWL make it possible …… Peterson 48

Four Bands One Whip<\/h3> – Quadruple your mobile operating pleasure please but don’t blame us …… K3OF 56

The Conlog Solution<\/h3> – What’s the key to winning contests? Put an Atari and this program at the helm of your station and find out …… N5ATD 62

Ishmod’s Journal<\/h3> – What happened in 1963 finally surfaced in 1983. Was he a fool? …… Whipple 64

The Terminal Terminal Unit<\/h3> – Build this variable-shift TU. Its performance will knock you dead …… K3PUR 70

Wheeling and Dealing with Preamps<\/h3> – For a switch from the remote hills of West Virginia comes a great antenna idea …… W8PMS 84

How to Have a Sunny Field Day<\/h3> – When Michigan hams turned to solar power they got more than they bargained for. Does success mean anything? …… W8YZ 100

Painless OP-amp Filter Design<\/h3> – Custom applications can be easy. Just follow this step-by-step guide to a perfect op-amp filter …… W4RNL 102
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73 Ham Radio Today Issue May 1984<\/a>
<\/h2>\n

From Base to Beams<\/h3> – Home-brew from the ground up – Here’s how to build a tower and top it off with performance-proven antennas …… W6TYH 10

A Little Gem for QRP<\/h3> – The T2FD antenna thinks it’s a full-size rhombic. Feeding is believing …… W8VFT 26

“The Tops of the Palm Trees”<\/h3> – 20 000 QSOs. Coral Sea. Banyandah …… VK2BJL 28

How to Gain with PVC<\/h3> – This could be history’s cheapest quad. Try water pipe on 2m …… WB6BHI 37

Helicoids<\/h3> – Few people understand haw to build these versatile whips. This article takes care of all the its ends and butts …… K2KSY 40

The Big-car Break-down Beam<\/h3> – Try two-meter luxury the easy way …… N3BEK 46

Simple Parabolic Theory<\/h3> – With a little bit of math -presented here- you can understand design build and enjoy these effective antennas. Hopefully …… OA4KO\/YV5 52

Control Your Mobile Power<\/h3> – Can commuting be a daily QSO party? Yes with this no-payment installment plan …… KBSQZ 56

Virginia’s Antenna Farmer<\/h3> – From Falls Church comes a simple message to fellow hams: Simple antennas work! …… WA4BLC 60

Throw in TV<\/h3> – Why not? This helix-building experience includes everything else …… WA4WDL 64

Yagi Fear?<\/h3> – Forget it. Whether for construction or companson this Atari program zaps every design problem …… W6WTU 84
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73 Ham Radio Today Issue June 1984<\/a>
<\/h2>\n

Easy Berardi Building<\/h3> – You can count on this simple frequency counter from Arizona …… Berardi 10

Don’t Grope in the Dark!<\/h3> – Let a simple card-file box be the brains of your own emergency lighting system …… W7RXV 16

Flying High with Two<\/h3> – Here’s how a hand-held makes for some ultralight Michigan madness …… WB8DQT 20

Creason’s Do-it DVM<\/h3> – The more Sam builds the more smart people pay attention …… K6EW 26

Meeting Ends Make<\/h3> – These ten tips will better your club. Are you friendly or frigid? …… N6HYK 30

Tester Project: England ’83<\/h3> – Wherein you flash-chance transistors chap …… Penfold 34

Sounds Good to Me<\/h3> – Two Texans put together “73 Morse RIT.” It’s the best Basic VIC-20\/c64 code program you will ever see …… W5VKC\/1 WB5AYD 38

Piggy-bank Repeater Project<\/h3> – Set it and forget it. This inflexible controller doesn’t bend the budget …… KT2B 42

Not-so-famous Garriott Words<\/h3> – In one of his first post-sTS-9 appearances W5LFL spoke at Foothill (CA) College. We record his dedication to amateur radio. …… N6BIS 48

Better the R-70<\/h3> – At your own risk you can soup up one of Icom’s super receivers. How to do it was not read here …… KE4AQ 54

Elegant Rotating<\/h3> – K9AZG did it right. W4RNL makes it better. For sightless and sighted hams alike this update to a 1982 article will be revealing …… W4RNL 60

Requiem for the Tube<\/h3> – This pleasing project is perfect for pentodes. It could be the last time you use them …… WA2EWT 68

New Orders for the R-109<\/h3> – Two bucks and ten minutes are all it takes to reenlist a vintage receiver …… K8AXH\/7 70

Try Quality Code<\/h3> – Using this Mod III update is much simpler than saying its title twenty times …… K6APW 78
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73 Ham Radio Today Issue July 1984<\/a>
<\/h2>\n

Shoot at Will<\/h3> – KK2Y’s Dayton mandate was to capture things on film. He did it. Enjoy a slice of Hamvention …… KK2Y 10

Secrets of Cordless Phones<\/h3> – Is privacy sacred and range not? Maybe some hands-on research can help you decide …… Haas 20

Modern-eyes the S-meter<\/h3> – Here’s how to de-strain your baby blues by adding a simple LED readout …… Patterson 24

Let’s Have More Hams<\/h3> – Part I: How to organize and run a Novice class …… AD0K 26

Let’s Have More Hams<\/h3> – Part II: How to take and pass FCC exams …… KC3HW 30

Son of Nicad Conditioner<\/h3> – This intelligent discharger knows when to stop and tells you how much time it took …… WlGSL 36

Perfboard and Soldertail?<\/h3> – Definitely. What is commonly done never written up (until now) but always appreciated …… W4RNL 42

Watch a Warhorse Work<\/h3> – With a new tank circuit the SB-221 does great things for 160 and 10 …… W3JIP 48

Random VIC<\/h3> – Code-loving Commodore addicts asked for this. Ye shall receive …… WB7RLX 66
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73 Ham Radio Today Issue August 1984<\/a>
<\/h2>\n

Top-Notch Tuner Time<\/h3> – Can’t get your signal out of the backyard? Build KC2NT’s antenna matcher and hear what you’ve been missing …… K2NT 8

Cheap Power Ploy<\/h3> – This rugged supply will give you more power than you ever dreamed possible. Have we gone too far this time? …… K9QLL 10

Penn’s Two-tone Gadget<\/h3> – Clue one: We’re talking about lab quality. Clue two: Get your junk box …… W1BG 21

Yaesu Icom Graft Revealed<\/h3> – Splice Icom’s headset to Yaesu’s talkie and discover handle happiness …… K2OAW 32

Stare-way to Heaven<\/h3> – At the Arecibo observatory the sky’s the limit. Who said size doesn’t matter? …… AJQN 34

Counter-productive Basics: Part I<\/h3> – Digital needn’t be difficult. Let K41PV guide you through the fundamentals of frequency counting …… K4IPV 40

Messing With Heath<\/h3> – This 101 control mod proves fun and easy with frequency. Your rig deserves it …… AI7C 46

AMTOR How-to<\/h3> – FEC? ARQ? Don’t panic. Timely advice from the father of AMTOR takes the confusion out of our newest mode …… W2JUP 62

Picture-perfect Audio Filters<\/h3> – Throw away that antique breadboard and scope. Let your Apple II peak and tweak a soft circuit instead …… K3LF 66

Top-band Power Punch<\/h3> – Sick of 5-2 reports on 160? Build this knockout kilowatt amp and make it 59 every time …… WA0VNY 70
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73 Ham Radio Today Issue September 1984<\/a>
<\/h2>\n

Counter-productive Basics: Part II<\/h3> – How hard can counting be? K41PV tells us where the errors occur and how to fix them …… K4IPV 8

Elementary My Dear: Watts ‘n’ Swr<\/h3> – Stop guessing. Build this no-nonsense VHF\/uHF wattmeter and save your hard-earned cash …… KT2B 14

Perfect Timing<\/h3> – Proud of your repeater? Construct this multi-talented identifier and tell the world your who what and where …… VE2DWG VE2AO 22

Quick Qwip Conversion Fax<\/h3> – Seeing is believing. A few dollars and a weekend will turn this surplus unit into a reasonable facsimile …… KA9CDL 28

No-etch Circuit Boards<\/h3> – Produce quality PCs with N6JH’s cut and-pry technique …… N6JH 34

Disco Duckie?<\/h3> – Try some dirt-cheap headphones for your HT …… N6CSI 36

Ntty Grtty RTTY<\/h3> – Tomorrow to Morrow is too late. Build this easy Timex\/sinclair interface today and be on the air tonight …… WB6CTM 38

Easy FSK for the IC-730<\/h3> – Don’t settle for less than complete. Four dollars gives you the RTTY the factory left out …… WA4TTO 48
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73 Ham Radio Today Issue October 1984<\/a>
<\/h2>\n

Find Fault with Your Coax<\/h3> – Is your cable really doing its job? Find out with this elegant detective method …… K4IPV 10

The Aussie Parasol Beam<\/h3> – What has twelve corners three bands and uses 140 feet of wire? Hint: It’s not a quad …… W6TYH 20

The Incredible Broadband Bowtie<\/h3> – Truly designed for solid-state finals this 75m antenna features 50 Ohms at the feed-and less than 1.5:l swr across the band …… KC3HW 26

RX for Ailing Antennas<\/h3> – Maximize your system’s performance with this easy-to-construct noise bridge. It’s just what the doctor ordered …… K41PV 28

Ryan’s Vertical Ecstasy<\/h3> – Warning: Graphic description of vertical antenna array patterns. Explicit CoCo language. May incite construction frenzy …… WB5LLM 32

Try Low and Behold<\/h3> – Here’s a shock: You’ve been wasting money on towers and poles. W1GV explains why low antennas may outperform high-altitude aluminum …… W1GV\/4 38

A No-holes Barred Beam<\/h3> – What to do when the lease says “no antennas”: Turn your entire house into a broadside dipole …… WA4WDL 44

Another Eggbeater<\/h3> – Don’t be a VHF weakling. Pump up your performance with this simple 2m omni …… WD5DNL 48

A Tree-mendous Vertical<\/h3> – Build an 80m DX-getter that really grows on you …… KS4B 62

When Darkness Calls<\/h3> – On 160m success means diligent planning. These tips on gray-line propagation are your key to Top Band DXCC …… VE7BS 66
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73 Ham Radio Today Issue November 1984<\/a>
<\/h2>\n

Color Computer SSTV: Part I<\/h3> – Turn your CoCo into a complete SSTV terminal How? First build this high resolution display system …… K6AEP WB8DQT 10

Wrap Up TVI!<\/h3> – Can you endure another evening without transmitting? Use this simple cure to choke out television interference forever …… KR7L 26

But I Know How To Solder!<\/h3> – Anyone can dribble hot metal over a joint bit it takes an artist to really solder. Are you a Picasso or a pig? …… WD4S 28

Free-form Filter Design<\/h3> – Build the ultimate audio filter: high-pass low-pass bandpass notch variable Q and cutoff frequency all in a single circuit. Circuit? Sorry that’s a single chip! …… KA4QVK 34

Your Own Optoelectronic Anemometer<\/h3> – Light contral and car-top calibration make this project cheap to build easy to align and extraordinarily accurate …… K3VDB 42

Rampant RTTY<\/h3> – Create the ultimate mallbox! K0WVN describes a system that operates from 45 to 1200 baud with dual shifts-automatically …… K0WVN 50

Decode Soviet Space Messages<\/h3> – As you read this mysterious signals are being beamed into your shack. What do they mean? Where are they coming from? Use WD0BCI’s satellite-telemetry reading program to uncover facts …… WD0BCI 53

The End of the Line<\/h3> – What’s the point of sending power up the coax if it never reaches the antenna? These tips on connector installation and care will help maximize your station’s signal …… WB5LBI 56

A Useful Present You Can Build<\/h3> – How about a high-tech holiday gift? …… WB4YOD\/pW8ZAF 58

Ham Over Fist<\/h3> – Here’s a VIC-20 CW program with a twist: Its real-time display lets you watch your dits and ‘dahs dance across the screen. But be forewarned-you may not like what you see! …… WD8BHH 64

Homemade Defroster Shutoff<\/h3> – This simple gadget has nothing to do with amateur radio but its a neat little project anyway …… KB2WM 68
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73 Ham Radio Today Issue December 1984<\/a>
<\/h2>\n

A Times Square Data Display<\/h3> – Build this scrolling touchtone decoder for your favorite repeater. What you see is what you hear …… WA4TEM 8

Color Computer SSTV: Part II<\/h3> – Complete the picture by adding weather-satellite facsimile to your new color SSTV system …… K6AEP WB8DQT 18

Transistors: A Biased Approach<\/h3> – In Part I KC0EW takes the mystery out of solid state with clear talk and practical examples …… KC0EW 34

Yikes! Spikes!<\/h3> – You paid good money for that computer system. Now spend a few hours building an insurance policy against voltage spikes …… W1UO 40

Give Your Micro the World<\/h3> – There’s no voodoo involved in analog-to-digital conversion. In fact here’s a project for your TRS-80 that uses only two chips! …… A1OZ 44
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73 Ham Radio Today Issue January 1985<\/a>
<\/h2>\n

Eight Mods for the IC-730<\/h3> – Customize your ICOM! Snip here. solder there and enjoy perfection …… N6HI 10

VIC RAMification: Part I<\/h3> – Here’s how to turn 3 ICs and half an hour into 24K of extra VIC-20 memory …… Brefini 18

VIC RAMification: Part II<\/h3> – W6LOB fills the 3K gap of Part I with a quick piggyback RAM expansion …… W6LOB 22

Transistors: A Biased Approach<\/h3> – In Part II we evaluate base current and gain and use this information to design a working transistor circuit …… KC0EW 26

Automate the FT-757<\/h3> – Ready for robot radio? An inexpensive micro is all that you need to computer control your Yaesu …… KA6IFQ 30

That Glorious Gonset<\/h3> – With 300 Watts on 2 meters the Gonset 972 thumbs its nose at solid state. Rebuild one and be heard! …… KT2B 34

A Space-saver Seven Megger<\/h3> – Stuffing full-wave 40m loops into tiny places is W8TYX’s specialty. We finally got him to tell us how he does it …… W8TYX 44

Shoestring RTTY<\/h3> – Build a commercial-quality computer interface for under $30 …… W9ODK 46

Is Your Repeater Dying?<\/h3> – With this 16 channel telemetry encoder you have a remote chance of finding out …… WA4TEM 50

How Good Is Six?<\/h3> – Try 50 MHz with a transceiver you’ve built from scratch. There’s no greater pleasure than saying “I did it myself!” …… KL7GLK 57
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73 Ham Radio Today Issue February 1985<\/a>
<\/h2>\n

VIC RTTY Resource<\/h3> – Is your VIC-20 ready for RTTY? Make it happen with N5ALE’s foolproof software! …… N5ALE 12

Satellite Supremacy<\/h3> – Sometimes 15 Watts just doesn’t cut it with OSCAR 10. The solution? Use W2GEF’s 60-watt uplink amp-stripline construction makes building it a snap! …… W2GEF 18

CB to Six<\/h3> – Why stop at 10 meters? KB5LF’s Hy-gain conversion will take you to VHF just as easily …… KB5LF 22

Future Schlock<\/h3> – The strange tale of the KA5S experiment. Was he a genius or a madman? …… KA5S 30

Swr: A Modern Myth?<\/h3> – From rig to radials noted expert W6YUY reveals the path to a perfect antenna system. Be ready for a few surprises …… W6YUY 32

Ollie’s Folly<\/h3> – Circular polarization on HF? A forty meter helix with oil-drum forms? W1ZB’s signal runs rings around the rest. Folly indeed! …… W1ZB 42

Build a Better Box<\/h3> – Most hams cram their circuits into any old case that’s handy but a little planning can turn a so-so project into a master-piece of packaging …… W4RNL 44

Super Surplus Surprise<\/h3> – It’s super: 50 Watts on 160 80 40 and 30 meters! It’s surplus: That means inexpensive! It’s the GRC-9: Still surprised? …… K9RLF 54

The Texas Trans-tester<\/h3> – Here’s how to measure small-signal gain with a transistor checker you’ve built from scratch …… KG5B 60
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73 Ham Radio Today Issue March 1985<\/a>
<\/h2>\n

TVRO Trivia<\/h3> – To those would-be satellite enthusiasts wondering which way is “up ” W6SMJ offers the comfort of his years of experience in home satellite TV reception …… W6SMJ 14

All This and PCII!<\/h3> – Would you like a fully-programmable Morse keyboard that will balance your checkbook and play Sousa marches? Then read on! …… W4FXI 26

Do Volunteer Examiners Work? -a 73 Special Report<\/h3> – National VEC W5YI says yes. He should know …… W5YI 28

The Incredible Digiohm<\/h3> – How to put ten million resistors in the palm of your hand? Build the ultimate substitution box …… Rich 34

Speech! Speech!<\/h3> – Here’s a talking repeater controller that you can build in no time at all. It gives a whole new meaning to the word “vox”! …… WA4TEM 38

So Why Do They Call It Wireless?<\/h3> – One easy antenna. Five hot bands. Need we say more? …… WA8JXE 44

Cheap Heath Help<\/h3> – Is your HW-101’s offset off? Try this four-dollar fix. Without it you’re being cheated out of QSOs …… K6YB 48
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73 Ham Radio Today Issue April 1985<\/a>
<\/h2>\n

Dateline: Dayton<\/h3> – It’s almost here! Take an inside peek at the what when and where of ham radio’s biggest bash of the year with 73’s annual Dayton Hamvention sneak preview …… WA4BPI 12

Hear Hear!<\/h3> – Stop settling for second-rate signals from OSCAR. You’ve really no excuse. W6I0J’s low-noise preamp is easy to build and includes all the circuits necessary for alignment. So do it! …… W6IOJ 20

Ishmod’s Journal<\/h3> – What really happened on that lonely uncharted rock? And what was the eerie glow? …… Whipple 24

Don the Dayton Hat-tenna<\/h3> – Put a cap on your communications problems with a rubber duck that’s heads above the rest …… WB3CQA 26

Zounds! Grounds!<\/h3> – Here are the down-to-earth details you need to install a perfect ground system …… K4IPV 30

Build the Dixie Whistler<\/h3> – Adding two-tone SSB analysis to your test repertoire is as easy as one two tweet …… WB5IPM 36

In Search Of: RTTY<\/h3> – Experience the mysterious world of RTTY beyond the band edge but beware! Its allure’s too great for all but the stoutest of heart …… WA0MRG 48

Take A Hike<\/h3> – Combine a regulated power supply with a lightweight rechargeable battery. Add a smart control system. The result? Incredible versatility! …… N3BEK 54
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73 Ham Radio Today Issue May 1985<\/a>
<\/h2>\n

Discover the Discone<\/h3> – Is this the perfect aerial? Consider simple wire constrcution easy one-time tuning and flat swr from 3.5 to 28 MHz …… W1GV\/4 17

Two for Two<\/h3> – We respectfully offer a pair of radiators for the two-meter band so elegant yet so simple that you will kick yourself for not thinking of them first …… WA4BLC 22

The Snake with LED Eyes<\/h3> – A tall tale from the Antlers- wherethe decoration is strange and the stories are even stranger …… WA8WTE 24

Up Up and Array<\/h3> – W6TYH’s hybrid collinear will rocket your signal to new heights! …… W6TYH 32

Good to the Last Dot<\/h3> -is there life beyond WX HR IS? With these practical tips you’ll perk up every QSO and make every contact an adventure! …… N6HYK 38

Porqupine Mobile<\/h3> – Bristling to work HF from your car? Sport these spikes and hit the road …… N2CMU 40

The Rubber Duck Debunked<\/h3> – In ten minutes you can have 10 dB gain over your HT’s duckie. It’s enough to make you try …… W4NVK 42

The No-baloney Lunchbox<\/h3> – We suggest you paint this antenna tuner before showing it to your friends …… KR3T 44

Rotate the Bobtail Curtain<\/h3> – How do you rotate one hundred feet of wire antenna? It’s simple: Just flip the switch …… W8HXR 48

Alligatored Antennas<\/h3> – (clip) it’s 30m… (clip) it’s 17m… (clip) it’s 12m. Get the idea? …… WA4UZM 50

Zuper Zepp for VHF<\/h3> – Zip up your signal with UZM’s planz! …… WA4UZM 52

Phase the Nation<\/h3> – North south esat or west you’ll be on target with the dobule-X trapped-vertical array …… KB2XX 54

Where Am I Pointed?<\/h3> – Is this Sinclair beam-aimer program just like every other? Guess again …… AD1B 56
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73 Ham Radio Today Issue June 1985<\/a>
<\/h2>\n

Tune In the TU-1000<\/h3> – Has your RTW budget hit bottom? Then dust off that soldering iron-k9EUI’s no-nonsense terminal unit gives store-bought performance at a build-it-yourself price…… K9EUI 14

Secrets of Telehamming<\/h3> – When the bands are dead try trading your transmitter for a telephone. Operators are standing by …… K9EI 24

CoCo’s Counter<\/h3> – Use this dirt-cheap method to tune up your AFSK generator …… KG4Q 26

Is Ham Radio Baking Us?<\/h3> – What damage occurs when human bodies are subjected to electromagnetic fields is not fully understood. Here an expert in biostatistics examines the problem from an amateur’s perspective-and offers some practical preventative suggestions …… VE3KSP 28

AFSK And Ye Shall Transceive<\/h3> – A sine from heaven is what you’ll get when you build the AFSK-1020 …… K9EUI 32

Through the Looking Glass<\/h3> – If you could peek at a RTW signal through magic audio glasses what would you see? You’ll find out with KN4L’s Apple opus. a program that whispers. “Run me” …… KN4L 34

Perfection Plus<\/h3> – It’s not often a prize-winning package can be improved. Here’s a new look for a popular RTTY tuner …… W1PDI 36

Speak-No-evil RTTY<\/h3> – This tiny routine is all you need to transform your Heath H-8 into a RTTY receiving demon! …… WA6NHC 40

On the Flip Side<\/h3> – Here’s how to add reverse shift to your Kantronics Interface …… K1QPS 42

Quash QRM<\/h3> – Add a “RTTY Narrow” position to your TS-520’s mode switch-you’ll never copy hits again! …… KA4MTO 44

The D-day Demodulator<\/h3> – When the CV-89A joins forces with your micro. you’ll take the RTTY bands by storm! …… WB5LLM 46

Slick VIC Trick<\/h3> – Here’s the cheapest way we know of to add a printer to your VIC-20. First find a Model 33 …… KW9L 50

QSK for Your Vintage Vfo<\/h3> – All it takes is an hour …… KA3GCQ 54
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73 Ham Radio Today Issue July 1985<\/a>
<\/h2>\n

Faces of Dayton ’85<\/h3> …… KW1O WB8BTH 8

ICOM’s Extended Play<\/h3> – Ten minutes with a Phillips screwdriver gives your IC-751 transmit capability from .1 to 30 MHz! …… KS4B 12

America’s Dream Array<\/h3> – Twenty-seven dishes in a twenty-one-mile pattern make for some serious DXing at the National Radio Astronomy Observatory. Galactic DXCC anyone? …… AJ0N 18

WARC for the FT-101E<\/h3> – Here’s how to join the fun on our new 12-meter band. And you’ll be ready for 18 MHz too! …… ZS2RH 22

The Dayton Downlink<\/h3> – Optimizing your OSCAR downlink system can be frustrating. Use this easy method to measure your improvements and know just when to stop …… W9JD\/8

The 30-meter-plus Receiver<\/h3> – Explore the world of 10 MHz with a solid-state receiver you’ve built yourself! We’ve come a long way since oatmeal boxes and cats’ whiskers …… N4EY 30

The Incredible Inducto-gauge<\/h3> – Measure coils with impunity! Better yet measure them with this weekend project: a do-it-yourself inductance meter …… Ketchledge 34

The Peerless Power Pack<\/h3> – Simplicity is the key to this rugged 12-volt 5-amp supply. If you’re looking for quick energy here’s the answer …… KO2G 38

What You See Is Where You’re At<\/h3> – Tired of guessing your frequency? Resolve your problem to 100 Hz with this add-on digital display …… WA8YKN 40

There and Back Again<\/h3> – Add band-scanning to your TS-930s for under $20 …… KC7O 44

Home-brew the Blockbuster<\/h3> – In a heroic effort WB2WIK has created the ultimate 6-meter amplifier. Its single 4-1000A delivers over 2 kW with only 20 Watts in. The power supply alone weighs 120 pounds. When this monster talks people listen! …… WB2WK 50

Broken Ox Blues<\/h3> – The grid-dip oscillator is a stellar performer but missing coils can mean big headaches. Avoid frustration by winding your own …… W7RXV 56
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73 Ham Radio Today Issue August 1985<\/a>
<\/h2>\n

The Downunda Project: Part I<\/h3> – Stone the crows! This fair dinkum 2m transceiver from Australia really scores a six! …… Simpson 14

Harmonic-free QRP?<\/h3> – Avoid an FCC pink slip by measuring second-harmonic power with the ZS6UP reactance load …… ZS6UP 29

World War Wireless<\/h3> – What can you do with a pencil a razor blade a paper clip and a hank of wire? Why build a radio of course! …… W1BG 32

Instant ATV!<\/h3> – W8CHK breaks through the mystique surrounding fast-scan television. You won’t believe how easy it can be! …… W8CHK 36

Modification Mania!<\/h3> – Here are not five not ten but fifteen ways to perk up your HW-401 …… AI7C 42

Hunt the Auto-fox<\/h3> – Has your transmitter-hunting gone sour? DFers will love chasing this wily box and its variable skill levels give them a run for their money …… WB6GTM 48

Surviving the Unthinkable: Part III<\/h3> – WA8YKN outlines simple precautions that will allow your radio equipment to survive an electromagnetic pulse …… WA8YKN 52

Scope That Signal<\/h3> – Are you over-modulating? Is your linear linear? Find out with a station monitor you’ve built from scratch …… KD6VP 56

A Scavenger’s Radio<\/h3> – Using it is easier than building it …… KA0DMT 66
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73 Ham Radio Today Issue September 1985<\/a>
<\/h2>\n

Again the CCD<\/h3> – The continuing story of ham radio’s most amazing antenna …… KC8BN\/7 12

The Downunda Project: Part II<\/h3> – How to assemble and align the DSE 2m transceiver described last month …… Simpson 17

Fighting Fire With Wire<\/h3> – If 15m is hot and your antenna’s not try the V-bomb array …… W6TYH 26

Brew a Coffee Ground Plane<\/h3> – No cream no sugar-just a 440 antenna that really percolates …… WA2OVG 30

Takin’ It to the Streets-part I<\/h3> – Work the world from your HT! Crossbanding expert WA6AXX explores the how-to of remote and auxiliary operation …… WA6AXX 32

Build the Broadband Bow Tie<\/h3> – It’s every ham’s dream: An 80m antenna with a flat swr of 1.5:l from 3.5 to 4.0 MHz. And it couldn’t be simpler …… WD9ELG 38

Don’t Fall for Swr Fraud<\/h3> – Your feedline may be swindling you. Find out how much power you are losing and how to stop it …… W1GV 40

Whip the Competition<\/h3> – Improve your 2m HT’s “mileage” with this custom antenna from Datsun! …… N3DRW 42

Exponential Potential<\/h3> – The problem: A broadband antenna fed with coax exhibits narrowband re-sponse. The solution: Use this exponential-line matching system …… W6TYH 44

Wheatstones Are Not Crackers!<\/h3> – Here’s the slickest application of the Wheatstone circuit yet devised. The Nuller Bridge is the only instrument you’ll need to adjust your antenna matching unit to peak performance …… K4KI 50

A New Angle for Dipoles<\/h3> – Stand them on end! Sounds odd but WlGV presents an excellent case for HF vertical dipoles …… W1GV 54

Six for Two<\/h3> – Get range-tested 12 dB gain for under $5! K.C. Jones engineered this 2m delta beam for maximum bang per buck …… KA8RCJ 58

Dr. Frankenstein’s CB Beam<\/h3> – Ravage the countryside with ten-meter rf! Create your antenna with refuse from the Citizen’s Band graveyard …… KA3JOM 62
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73 Ham Radio Today Issue October 1985<\/a>
<\/h2>\n

Silver Eagle Awards<\/h3> …… Editors 18

Talk Is Cheap<\/h3> – Good news: Now you can afford a speech synthesizer! You have our word on it …… WB6NQK 22

Takin’ It to the Streets-part II<\/h3> – Last month’s discussion was only half of the story-now discover what remote control can do when the ShackMaster’s power is unleashed! …… WA6AXX 32

Above Intercept<\/h3> – It is cramped and dark and freezing cold but the Allies need information. Has Britain’s secret radio fallen into enemy hands? …… Layton 36

Build a 1296 Stripper<\/h3> – Join the fun on 1296 MHz with WB61GP’s stripline down-converter …… WB6IGP 40

Looking East<\/h3> – Silver Eagle award-winner Bill Pasternak recalls his 25-year relationship with W2NSD and 73 …… WA6ITF 46

Old Tubes Never Die!<\/h3> – Discover the romance of glowing filaments …… W6HDM 50

Give Your Disks a Physical<\/h3> – Are you getting what you pay for? Use this simple technique to quality-inspect your valuable floppies …… Kraska 56
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73 Ham Radio Today Issue November 1985<\/a>
<\/h2>\n

“Just Leave Me Here To Die!”<\/h3> – In June 1985 two VHF contesters trudged 4200 feet to the top of Slide Mountain. Fifty-pound packs wet weather and pernicious porcupines were simply a part of the fun …… KT2B 14

Toss Out Your Tubes!<\/h3> – Replace them with high-performance FETs. OA4KO shows you how …… OA4KO\/YV5

Improve Your Audio Report<\/h3> – Are you tired of lying to your fellow amateur? Try the QRI signal reporting system. Let him know what he really sounds like …… W2OZH 28

Conjure an Rf Genie<\/h3> – 73’s Weekend Special: A 3-22-mHz signal generator\/i-f aligner you can build in under two hours …… K1BQT 32

Operate OSCAR on 10 Meters?<\/h3> – It’s a snap-all you need is this versatile satellite converter! …… W6IOJ 36

A Gentleman’s Antenna<\/h3> – The solution to an age-old problem: How do you fit a 160m wire onto a 40m lot? …… WA4BLC 44

Probe the Unknown<\/h3> – Looking for an easy way to measure rf? Use the “electric pen ” a no-load active probe with real flair! …… Bailey 46

It’s a Dangerous Obsession<\/h3> – Growing up and learning about electronics is like driving a car before you can reach the brake pedal KB4YJ tells how he lived through it …… KB4YJ 50

Convert and Converse<\/h3> – Transform your C-64 Basic programs into Hamtext-readable sequential files. …… WB9AOU WD9ADZ 52
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73 Ham Radio Today Issue December 1985<\/a>
<\/h2>\n

FM Your IC-730<\/h3> – Put the icing on your ICOM-and discover why the 10m-fM craze is sweeping the nation! …… N9DBX 18

Join the SWOT Team!<\/h3> – 2m FM is fun but using a repeater won’t challenge your skill. Turn the switch to SSB and find out what ham radio is really about! …… KA3B 26

One-chip Facsimile<\/h3> – We all talk about the weather; now you can see it on your Atari. You’ll be amazed at how simple it is …… WB8TPD 38

NOAA’S 2m UFO<\/h3> – Your weather radio is a great signal source on 145.8 MHz. K9POX explains why …… K9POX 42

Secrets of Cellular Radio<\/h3> – Take a guided tour behind the scenes of our newest repeater …… N1BLH 44

The Santec Spectacular<\/h3> – Is your Santec becoming forgetful? Are its batteries going soft’? No more! Here are two quick mods that bring your hand-held to within an inch of perfection …… W2IVS 50

Saga of the Willie Wand<\/h3> – W5RRH learned a new technique while building this 6-element 2m beam. It’s called cut and try and try and try …… W5RRH 52
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73 Ham Radio Today Issue January 1986<\/a>
<\/h2>\n

More Cheap Talk<\/h3> – Here’s the beginning of the end of your sanity -a text-to-speech algorithm that lets your computer speak its mind! …… WB6NQK 12

Try an Inverted-psi Wire <\/h3>– Get the DX edge on 80m with a radiation angle that’s almost too low! …… W1GV\/4 22

Selcal and State Machines<\/h3> – WA7NBF takes the mystery out of this powerful technique with a hands-on selective-calling project …… WA7NBF 28

Little or No Resistance<\/h3> – Explore the strange world of superconduction where current flows forever and a picosecond is an eternity …… AJ0N 36

Run Silent Run Beep<\/h3> – Is your FT-227RB scanning? You won’t have to guess with this easy add-on …… PY2AUC 40

A Better Money-maker<\/h3> – WA6TTY stiffens up his original power supply to deliver a solid 13.8 volts at 20 Amps. The cost? Under three bucks! …… WA6TTY 42

The Commodore Cable Caper<\/h3> – Need a printer cable? Strapped for cash? Don’t just sit there\u2014 build the darn thing! …… KE4PC 44

The Perfect RTTY Filter<\/h3> – Its tunable shift covers 80 to 1160 Hz with a flat gain and Q. And you can build it for less than ten dollars !…… WA0MRG 46

Double Your Computing Power!<\/h3> – Try “parallel processing” with a second CoCo keyboard …… NO8M 50

Working 2ICTU<\/h3> – Can RTTY get any simpler? …… WB8QMK 54
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73 Ham Radio Today Issue February 1986<\/a>
<\/h2>\n

Razor-sharp CW<\/h3> – Here’s a filter for fanatics -or is 80 Hz too wide? …… N6HI 10

New Bands for Old Rigs<\/h3> – Internal or external converter or transverter here’s how to add three WARC bands to your favorite radio …… GW3SB 16

Razzle-dazzlin’ Your Azden<\/h3> – Some sleight-of-hand with a fistful of parts will make your PCS-2000 a 2m star! …… K7UKW 20

VIC RAMification: Part III<\/h3> – Thank W6LOB for the memories …… W6LOB 26

Yesterday’s Circuits Today<\/h3> – Remember tubes? W6HDM does. He’s resurrected a half dozen of his favorite circuits and updated them with semiconductors …… W6HDM 28

Up Down and All Around<\/h3> – Fit your KDK 2016A with this ten-dollar Scan Can …… WA2AXO 36

Build a Dynamic Duo<\/h3> – Add a speaker\/mike and a 12-v adapter to your HT …… VE1VQ 40

Scanning the TR-2400<\/h3> – A simple mod for lazy hams\u2014push the button and it scans! …… WB8IKO 42

The RIT Stuff<\/h3> – Clarify your FT-101E’s reception with this five-component modification …… K1NYK 44

Rebirth of the Eico 221<\/h3> – Turn this flea-market regular into a super-sensitive voltmeter. Then count the money you saved …… W5VTJ 51

Super-selectable Bandpass Filters<\/h3> – PASSE uses extraordinary methods to craft the ultimate i-f filter …… PA0SE 54

Curious About Code?<\/h3> – Learn (or improve) Morse from your TRS-80! You’ll never find a more patient teacher …… Lewart 60

WARC Rest and Play<\/h3> – Adding 10-mHz capability to your Yaesu FT-101Z is a simple step-by-step process. In just a few hours you can join the fun on our newest amateur band …… K7KQ 62
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73 Ham Radio Today Issue March 1986<\/a>
<\/h2>\n

Japan’s Hush-hush Rushbox<\/h3> – These units were ordered destroyed after WWll but a few fell into the hands of collectors. Now after 40 years PA0SE analyzes the Imperial Army’s secret radio …… PA0SE 9

Halt That Hum!<\/h3> – That annoying ac hum is robbing you of pleasure. Fix it in an hour with WA4WDL’s seven-piece filter …… WA4WDL 17

Faster Than A Patch It’s Speed Dialer<\/h3> – Dial home while driving by simply pushing a single button on the microphone …… K7UKW 20

Don’t Be A Kamikaze!<\/h3> – The Hara- Kiri Box is an improvement on the suicide cord that’s still dangerous but it’s a lot safer than the cord …… KA4J 30

132 Extra Memories for Your FT-i07M<\/h3> – At three cents a piece why not? …… LU2HP\/oN6JC 32

Inside CoCo’s ROMpak<\/h3> – Store your favorite Color Computer programs in ROM-and never type “Load” again …… WB8IKO 36

Build A Digital IC Trainer<\/h3> – A great helper for testing components as well as experimentation and circuit development …… WB4YOD\/pW8ZAF 40

Get Organized Today With Argo’s Helper<\/h3> – If your present QRP station is comprised of a half-dozen black boxes interconnected with several cables then th is may be the construction project for you …… W3BYM 44

Instruction Instructions<\/h3> – Discover hidden savings in the last place you’d ever look-the instruction manual …… N6HYK 50
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73 Ham Radio Today Issue April 1986<\/a>
<\/h2>\n

The Dayton Hamvention ’86<\/h3> – The center of the ham radio universe …… WA4BPI 20

Your Bridge Over Troubled Antenna Tuning<\/h3> – Is your antenna less than ideal? Put more fire in the wire …… W3MT 24

Stretch the GP Antenna to the Max<\/h3> – This the simplest of all antennas has much to recommend it …… GW3SB\/g3SB 27

The Care and Feeding of a Curved Linear Array Antenna System<\/h3> – For low cost very low maintenance yet acceptable performance try this antenna system for use in high-frequency amateur radio operations …… N6BIS 30

Stacked Vee-beam Arrays<\/h3> – If 15 meters sounds dead you’re not using the right antenna! …… W6TYH 32

The Match Maker<\/h3> – Everyone knows that antennas and transmitters should “match.” But what exactly is that? And how is it achieved? Here are the answers …… VE3LMP 38

Antennas Should Be Heard Not Seen<\/h3> – Ham radio meets interior decorating! KC3HW’s 2m J-pole wins the prize for unobtrusiveness …… KC3HW 42

A Connoisseur’s Microwave Converter<\/h3> – Brent Harry set out to build not the cheapest but the best downconverter possible. Serious microwave enthusiasts will thank him …… Harry 45

Get With the Program and Speed Up Your Code<\/h3> – Here’s your opportunity to increase your code speed without QRM QRN or QSB! …… KA2QOU 54

The Potabilities Are Endless!<\/h3> – Dunk your next project into icky goo and discover why potting a circuit is even more fun than building it …… KA7AWD 57

The Basics of Computer CW<\/h3> – Here’s a twist: W9ODK preprocesses Morse to make life easier for his VIC-20. The result? A Basic program that copies code from 5 to 50 words per minute …… W9ODK 59

Terminal Teletype<\/h3> – The last RTTY program you’ll ever write for your H-89 …… W3RWU 62

Malley’s Manchester Monitor<\/h3> – Listen in on the world’s finest conversationalist-you! …… K1NYK 66

Easy Digital Circuit Analysis<\/h3> – Learn the basics of Boolean algebra while you design an electronic keyer. Then use K5VKQ’s techniques to give your project a “software smoke test” …… K5VKQ 68

Rock Solid Rf<\/h3> – Get pinpoint precision with this PLL-based frequency synthesizer …… Ociepka 74
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73 Ham Radio Today Issue May 1986<\/a>
<\/h2>\n

Lousy Inconsiderate Dummies<\/h3> – Lids we love to hate …… W2NSD\/1 28

Speed-charge Your PB-21<\/h3> – Is your TH-21 spending more time on your desk than on your belt? …… WA8IZV 32

Army Surplus CW<\/h3> – Revamp the CIA’s secret CW sender …… W8MFL WL7AKZ 36

The Day the Aliens Landed in Limerick Maine<\/h3> – The ultimate eyeball QSO …… W1ROM 38

The Hula Hoop Loop Revisited<\/h3> – A new twist in deep-null receiving antennas …… W6QIF 42

Are Sine Waves Sacred?<\/h3> – Plug your toaster into a trapezoid …… W6HDM 44

Transmitter Hunters: Here’s Your Ammo For Tracking<\/h3> – Be the first on your block with a 2m paint can …… WB0CMC 50

What You See Is Where You’re At: Part II<\/h3> – Add a digital frequency display to your favorite radio …… WA8YKN 54

Total Solar How To<\/h3> – turn sunshine into sine waves …… WB8VGE 60

Agc PDQ<\/h3> – A real ear-saver and cheap to boot …… KX6E 66

Radio to Go<\/h3> – For the ham whose mike is grafted to his lips: a strap-on carry-out radio …… WB0WPY 68

Remote-controlled Everything<\/h3> – The lazy ham’s dream\u2014just point and press! …… WB6VYN 70
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73 Ham Radio Today Issue June 1986<\/a>
<\/h2>\n

Never Say Die<\/h3> – Nine full pages of W2NSD\/1! …… 4

A Walk Through the VHF\/uHF Spectrum<\/h3> – Is there life after 40 meters? …… KT2B 26

Hams In Space<\/h3> – W5LFL & W0ORE talk about the past present and future of ham radio …… KW1O 34

Two to Ten<\/h3> – A quick way to get on 10 FM with a big signal …… WB5IPM 38

Some Guys Make It<\/h3> – Classic humor from 73’s cellar …… K2ORS 46

Digital Simplex Repeaters<\/h3> – New-wave ham radio\u2014a marriage of packet and digital-voice technology …… K4YKZ 48

Messing With Microwaves<\/h3> – Wonderfully cheap and incredibly fun! …… Neal 52

They Threw What Away?<\/h3> – Our favorite uncle is dumping his UHF swr bridges …… WA8WTE 58

Those Tantalizing Twos<\/h3> – Guess what? Your IC-2AT or IC-02AT is also a versatile scanner! …… AL7DS 60

Computer Rotor Control<\/h3> – The first step toward an automatic shack …… WB2UVU 64

Head to Head<\/h3> – ICOM’s IC-471A versus Kenwood’s TS-811A …… KT2B 20

MFJ’s New Packet TNC<\/h3> – The MFJ-1270 …… N1BLH 24
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\n

73 Ham Radio Today Issue July 1986<\/a>
<\/h2>\n

Dayton ’86<\/h3> – Capture the excitement (and the exhaustion!) of the Dayton Hamvention in pictures …… Staff 16

How to Build A Great Ham Club<\/h3> – Fatherly advice on how to strengthen even the wimpiest of groups …… W2NSD\/1 26

Roll A RTTY Scope<\/h3> – A project for the purist- this tuning indicator has a built-in CRT …… WA0MRG 28

Bozo And the B-hunt<\/h3> – Light a fire under your repeater group! Send them off on a wild goose chase! …… WD6R 36

HAMS Against Drunk Driving<\/h3> – How your club can aid in the fight against drunk drivers …… KB6HQS 38

The Piggy-bank Patch<\/h3> – In this follow-up to “The Piggy-bank Repeater Project ” you’ll discover how to build an add-on autopatch for the original controller …… KT2B 40

Future Hams of America<\/h3> – Find out what happens when 8 000 people are introduced to ham radio all at once! …… Azzalina 44

Publish Or Perish<\/h3> – From what to put in to where to put it here’s your guide to publishing a club newsletter …… N1BLH 48

Genius Brings Home the Bacon<\/h3> – Seven years later the Mobius antenna takes on a new twist …… Phenix 52

Administering the Novice Exam<\/h3> – The simple steps to take when bringing a Novice into the fold …… WF6P 56

Troubleshooting With the DMM<\/h3> – A step-by-step guide to tracking down rotten transistors and diodes using a digital multimeter …… Davidson 58

Kit Corner: the DSE Radio Direction Finder<\/h3> – An introduction to the art of kit building …… Swain 64

C-64 S-s-s-tutter Fix<\/h3> – This is a guaranteed sure-fire cure for key-bounce …… WA4BLC 70
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73 Ham Radio Today Issue August 1986<\/a>
<\/h2>\n

A Packet Primer<\/h3> – For the totally bewildered -learn the mechanics of packet without having to ask embarrassing questions …… W1BEL 28

How To Make Friends At 1200 Baud<\/h3> – Answers the question “What do I do with it?” that you asked after reading the primer. This article explains the operating side of packet …… W2JUP 34

Precision Packet Tuning<\/h3> – Complete plans for building what could be the world’s best packet\/rTTY tuning indicator. It’s all digital and has a resolution of 10 Hz! …… WB2OSZ 40

Seeing Packet Radio With Different Eyes<\/h3> – How a blind ham copes with an inherently visual mode …… N7FDS 48

So You Want To Be A Sysop?<\/h3> – You may change your mind! Learn the secrets of a successful packet bulletin board station …… WB2MNF 50

Birds ‘N’ Bauds<\/h3> – Amateur satellite builders from three countries discuss what’s in store for packet radio in space …… NK6K JA2PKI DK1YQ DB20S DJ0HC\/kE6MN 58

Connect Alarm!<\/h3> – A simple add-on for your TNC that screeches when someone connects to your station. This is a one-hour project (we’re timing you!) …… K7YZZ 66

Survival Training For Mountaintop Digipeaters<\/h3> – The amazing story of a club with a purpose: to blanket the state of California with digipeaters …… WB6RAL 68

Beyond Level Two<\/h3> – The philosophy of networking and the future of amateur packet radio. Read only after successfully completing pages 1-73 …… KA9Q 74

Lightning Never Strikes<\/h3> – These simple precautions can save your rig… or your life …… W0WUZ 79

And If That Isn’t Enough<\/h3> – If you’re still totally bewildered about packet join this question-and-answer round table …… NK6K 80

On The Shelf<\/h3> – A bibliography of the seminal works in packet radio …… NK6K 86

73’s Packet Buying Guide<\/h3> – At-a-glance comparisons of everything on the packet market (complete with prices) …… Staff 88

Kit Corner: The DSE 500-mHz Frequency\/period Counter<\/h3> …… KW1O 90

A computer on a Drive<\/h3> – Ampro’s CP\/m Little Board …… WA8WTE\/4 24

Driving the Computer<\/h3> – Hamcom terminal software from AEA …… AE5V 26
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73 Ham Radio Today Issue September 1986<\/a>
<\/h2>\n

A Rotatable What?<\/h3> – How to spin 90 feet of crank-up tower on a lazy susan …… WA2VUN 28

HF Antennas: All Bands All Wire<\/h3> – Another round in the crusade against coax\u2014these three 9-band doublets contain no artificial ingredients …… W0VM 32

Watts My Line<\/h3> – Coax parallel feeders or microstrip this Basic program lets you design your own custom transmission line …… K4IPV 36

Scaling the Wet Noodle<\/h3> – Antennas in one-quarter time: Experiment with your favorite 160-meter ludge on 40 meters …… W5RRH 40

The Missing Link<\/h3> – Control your entire HF station from the convenience of your HT’s tone pad …… WB2REM 42

Dishing It Out On 10 GHz<\/h3> – Microwave feed systems and antennas that really cook …… WB6IGP 46

High and Dry<\/h3> – You’ll literally go through the roof over this beam mounting scheme …… WA2OLZ 50

The Ramada Radiator<\/h3> – It fits in a suitcase covers all bands and costs under $10 to build …… WA8WVF 52

Texas Tango Antenna<\/h3> – Get two bands for the price of one with a tuned-coaxial-stub dipole …… K5BTV 54

Trap An Amazon Aerial<\/h3> – In the jungle there are no Radio Shacks. Here’s how to home-brew your own traps …… WB4YOD\/pW8ZAF 56

Resonate Wire Antennas<\/h3> – Amateur radio’s roots: Take a piece of wire and stick it in your rig. (Well it’s a little more complicated than that) …… W0VM 60

Lazy U Dipole<\/h3> – Here’s what happens when a dipole gets the bends …… VE7BS 64

CoCo’s Compu-charger<\/h3> – Could this be the world’s smartest NiCd conditioner? …… K2OAW 70

Does All<\/h3> – ICOM’s IC-1271A VHF\/uHF multimode transceiver …… KT2B 22

Tells All:<\/h3> – The Heathkit HO-5404 station monitor …… N1BLH 24
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73 Ham Radio Today Issue October 1986<\/a>
<\/h2>\n

Just the FAX Ma’am<\/h3> – Check out NOAA’s eyes in the sky with this one-chip weather FAX decoder for your C-64 …… WB8TPD 24

Make the Switch to PIN Diodes<\/h3> – Unbelievably fast PIN diodes can drag your tube-bound transceiver into the 80s with silent switching …… OA4KO\/YV5 28

Shoestring Shortwave<\/h3> – Remember when rigs were built on pine bases? Try KICLL’s converter for old time’s sake …… K1CLL 34

The End of the Rope<\/h3> – Some days you just want to mail your license back to the FCC …… K9AZG 38

A Simple Way to Measure SSB PEP<\/h3> – Sure anybody can do it on CW but what about that dancing voice envelope …… W5VSR 40

Microwave Building Blocks: The I-f Amplifier<\/h3> – What used to take a rack of tubes can now be done on one tiny chip …… WB6IGP 42

The DXer’s SCF<\/h3> – It’s deadly sharp doesn’t ring and needs no alignment. Is this switched capacitor filter the ultimate station accessory …… NB9K 46

One Band One Transistor<\/h3> – Carry your 75m net around in your pocket …… WB2EUF 54

On the road:<\/h3> – The DSE 440-mHz mobile transceiver …… WB6PHE 18

See the band:<\/h3> – Heathkit’s HOA-5404-1 Pan Adapter …… N1BLH 20
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73 Ham Radio Today Issue November 1986<\/a>
<\/h2>\n

A Power Supply Primer: Part I<\/h3> – First part of the last word on those big heavy things …… K4IPV 26

Born-again Bargain Boards<\/h3> – Put surplus (cheap!) printed-circuit boards to work in your shack …… Thompson 30

Defuse RFI<\/h3> – The answer to the question “What’s a coaxial ground?” …… W0WUZ 32

Commodore’s RTTY Riot<\/h3> – Super-simple way to put your C-64 on RTTY …… W8CHK WB8YOB 34

Transistors On The Bias<\/h3> – The straight scoop on how to build a transistor amplifier complete with a free Basic program …… W6WTU 40

No Free Lunches<\/h3> – Step into the middle of a raging debate -can we get energy from nothing? …… W6HDM 42

Subaudible Snooping<\/h3> – Figure out what frequency everyone is using for subaudible access on their repeaters. Endorsed by the Radio Police …… KE6VK 48

A Pedal-pushing Power Plant<\/h3> – Work on your weight while you power your station …… WA8WTE 50

73’s Annual Holiday Shopping Guide<\/h3> …… Staff 54

Head-to-head 220 bricks<\/h3> – Alinco’s ELH-220GF versus Mirage\/kLM’s C22 A …… KT2B 20

Another brick for the wall<\/h3> – Dick Smith’s 100-watt VHF amp …… WB6PHE 22

Heath Power<\/h3> – Heathkit’s IP-2760 Battery Eliminator …… KW1O 24
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73 Ham Radio Today Issue December 1986<\/a>
<\/h2>\n

Make The Switch<\/h3> – Add WARC to your rig’s bands witch in a few hours\u2014but you’d better get a pair of tweezers …… WB2JJX 26

A VOX In A Box<\/h3> – This is the SSBer’s answer to memory keyers -a tape-loop CQer! …… K1NYK 34

Split That Audio!<\/h3> – Listen in on one of contesting’s best-kept secrets\u2014and add precious points to your next multi-single effort …… K1NYK 38

Nobody Died<\/h3> – Three courageous amateurs battle the contesting masses on six and two …… KT2B 40

Everybody Equalize!<\/h3> – Get more talk power out of your rig by tailoring its audio response ……K9EID 44

This Pileup’s For You!<\/h3> – Be the hottest thing on the air since the Hindenburg! …… K2SDD 46

Narrow-minded Filtering<\/h3> – This single-chip switched-cap filter goes together in a snap… and has skirts so tight that you’ll only hear the dits! …… WA3IAC 48

1987 World SSB Championships<\/h3> – Results of the 1986 160- and 75-meter tests plus rules for 1987’s edition …… KE7C 50

Vox contesti<\/h3> – The DVK-100 digital voice memory keyer …… WB8BTH 20

Multi-mode marvel<\/h3> – AEA’s PK-232 PAKRATT …… KW1O 22

Every ham’s computer<\/h3> – Heathkit’s HS-148 PC-compatible …… KW1O 22
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73 Ham Radio Today Issue January 1987<\/a>
<\/h2>\n

Announcing: 73 Magazine’s DX Dynasty Award<\/h3> – We decided that it was about time someone started DXCC over from scratch! Here’s how you can join in the frenzy of DXing’s newest and hottest award …… Staff 27

A Power Supply Primer: Part II<\/h3> – Now that you’ve rectified the wall socket’s ac you’ve got to do something about all of those crazy ripples …… K4IPV 28

Operators Aren’t Standing By<\/h3> – Solve your remote-control problems once and for all with this under-priced over-featured DTMF decoder …… Piechocki 34

The Glue Ribbon Solution<\/h3> – Here’s one you haven’t thought of: Create your own conductive epoxy to make low-resistance bonds to just about anything …… WB0NRU 38

Microwave Building Blocks: The Solfan Special<\/h3> – Complete plans for building your own microwave rig -you’ll be on the air this weekend! …… WB6IGP 40

World SSB Championships<\/h3> – Results of the 1986 40-meter fracas; rules for the 1987 tests …… KE7C 53

Inside ICOM<\/h3> – What’s really different about the IC-751A? …… N1BLH 20

144-mHz Antenna Test<\/h3> – Three For Two Cushcraft vs. Tonna vs. Cushcraft …… KT2B 22

Top SCORE<\/h3> – MJC’s Sweepstakes Contest Operating Results Enhancer software for the PC …… KW1O 24

Beginner’s Luck<\/h3> – Heil’s handbook for the rank amateur …… KA1MPL 26
\n
\n

73 Ham Radio Today Issue February 1987<\/a>
<\/h2>\n

Secrets of Silent Switching<\/h3> – It’s time to say farewell to chattering sticky relays …… OA4KO\/YV5 28

PC Infernos<\/h3> – Ah the sweet smell of flaming phenolic! Before you throw out that burned PC board consider doing a little micro surgery …… WB4YOD 32

Shoestring Software<\/h3> – Forty-five baud on a budget: This amazingly simple software will boot your Commodore up on RTTY in under an hour …… W9ODK 34

The Talking Teletype<\/h3> – K9EI’s Basic RTTY-to-voice system turns your computer into an electronic mother-in-law …… K9EI 36

Micro Morse<\/h3> – Finally a solution to the “how the heck do I connect my computer to my rig” problem. This interface fits just about any machine …… WB8DQT 40

You Too Can Be An SOB<\/h3> – Join this elite society of ham radio operators …… K9AZG 44

Tap Tap Tap Clunk<\/h3> – Yes it’s another VIC-to-teletype printer article! It’s still unbelievably cheap …… N1II 46

KOKO-the Kids’ Own Kode Oscillator<\/h3> – Get the little ones started early in ham radio. (Hint: Tell them not to touch Daddy’s oscillator) …… K5JRN 48

Cosmic QRN<\/h3> – As if you didn’t have enough to worry about you’ve now got to think about hidden messages lurking in the static! …… W6HDM 50

1986 15120-meter SSB Championship Results<\/h3> …… KE7C 101

The new Top Band?<\/h3> – ICOM’s 1.2-gHz IC-120 …… KT2B 20

If there only was a 40-meter version<\/h3> – The Mirage\/kLM 1.2-44 LBX 44-element 1.2-gHz yagi …… KT2B 21

On target<\/h3> – Telex\/hy-gain’s model 218S OSCAR antenna system …… NlEJF 22

Mellifluous Morse<\/h3> – The R.A. Kent brass CW key …… KW1O 24

Hot it’s not<\/h3> – Sony’s AIR-8 hand-held programmable scanner …… NlBLH 26
\n
\n

73 Ham Radio Today Issue March 1987<\/a>
<\/h2>\n

40 Meters In A Nutshell<\/h3> – This clever 7-mHz transceiver slips right into your pocket (you may have to enlarge your pockets a bit) …… KG5B 26

C-64 Slow Scan<\/h3> – Use your Commodore for something other than playing Space Potatoes -explore the exciting world of slow-scan television …… WB9LYH 34

The Calibrated Drake<\/h3> – Avoid FCC pink slips with this simple calibrator for your Drake 2-line …… K9ARZ 40

The Cap Checker<\/h3> – Clear your junk box of all those unmarked capacitors\u2014build this simple analog capacitance meter…… VE6BGL 42

DX Dynasty Award<\/h3> – If you were hibernating when the word got out in January check out 73’s new DX award -over 390 countries and still growing …… Staff 44

Including the kitchen sink<\/h3> – ICOM’s IC-275A 2m Multi-mode …… KT2B 20

Long time coming<\/h3> – Microwave Modules’ MMT 220\/28 220-mHz Linear Transverter …… KT2B 22

New on two<\/h3> – Alinco’s ALR-206T 144-mHz FM Mobile Transceiver …… KT2B 24
\n
\n

73 Ham Radio Today Issue April 1987<\/a>
<\/h2>\n

Dayton Digest<\/h3> – If you haven’t been to the Dayton Hamvention you haven’t been to a hamfest …… WA4BPI 32

QRP Antenna Farming<\/h3> – Work the world from a small lot with a few Watts …… W0VM 36

The Cellular Phony Antenna<\/h3> – A two-meter mobile antenna with a twist …… WA2AJQ 38

Weatherproofed Antennas<\/h3> – Stop ripping apart your antennas every year in the name of “maintenance” …… KD5UJ 40

Tube Terror<\/h3> – “Before you can leave you must find an application for every tube in the warehouse” …… Thompson 42

The Ducky Doctor<\/h3> – Heat-shrink tubing is a flexible fix for your cracked rubber ducky …… W6APZ 44

Tuner Transformation<\/h3> – Make the Heath SA-2500 antenna tuner truly automatic …… Ferrand 46

Super Sommer<\/h3> – DJ2UT XP706 Multiband Beam …… N1EJF 20

No vertigo<\/h3> – Glen Martin Engineering M185A Tower …… N1EJF 21

Table for two?<\/h3> – Kenwood TS-711A 144-mHz Multimode Transceiver …… KT2B 24

220 amps<\/h3> – Tokyo Hy-power Labs HL-22V and HL-102V 220-mHz Power Amplifiers …… KT2B 26

On the bench<\/h3> – OPTOelectronics 1300H Frequency Counter and Wenzel Associates Counter-mate Frequency Standard …… KT2B 27

Novice rig<\/h3> – Heath HW-99 Transceiver …… KA9HCC KN2F 30
\n
\n

73 Ham Radio Today Issue May 1987<\/a>
<\/h2>\n

Repeater Renaissance<\/h3> – Digital audio technology will bring your repeater into the information age …… WA6AXX 26

Packet RATS<\/h3> – This Resume-after-transmit Scanner lets your IC-27A do double packet duty …… WA3DNM 30

The Fakeroo<\/h3> – Can this kid really copy RTTY by ear or is someone pulling the old fakeroo? …… K9AZG 32

Semi-rapid HT Charging<\/h3> – Give your ICOM HT an eight-hour charging option …… K3NXU 34

Revive A Dying Swan<\/h3> – Haul up your boat-anchor Swan 250 and give it new life with a home-brew vxo …… WA4UZM 38

Six-meter marvels<\/h3> – Microwave Modules MMT 50\/144 and MMT 50\/28S 50-mHz Linear Transverters …… KT2B 18

It’s more micro<\/h3> – ICOM IC-i2AT Two-meter HT …… WB2MIC 20

Good ‘n’cheap<\/h3> – Dick Smith Electronics Function Generator Kit …… KA1MDA 24
\n
\n

73 Ham Radio Today Issue June 1987<\/a>
<\/h2>\n

A Guided Tour of 1.2 GHz<\/h3> – The 23-cm band is Novice Enhancement’s least-understood allocation-come on up and see what you’ve been missing …… KT2B 24

The Digital Novice<\/h3> – Jim Grubbs leads you through the basics of a ham’s digital world -from Sam Morse through packet …… K9EI 28

Tune In 220<\/h3> – Convert the GE MASTR-pRO receiver to 220 MHz -it’s as easy as winding a few coils …… W3DTN 32

Novice Enhancement Buyer’s Guide<\/h3> – Everything and anything that the “enhanced” Novice might want or need for the new bands and modes …… Staff 34

220 Toss-up<\/h3> – ICOM’s IC-38A and Kenwood’s TM-3530A 220-mHz Mobile Transceivers …… KT2B 18

Homely on HF<\/h3> – Com-rad’s Hi-rizer Antenna …… N1BLH 20
\n
\n

73 Ham Radio Today Issue July 1987<\/a>
<\/h2>\n

The National Championships<\/h3> – Finally there’s a contest where the “Little Gun” has a chance where guile wins out over gigawatts …… KE7C 30

The Two-meter Transverter Project<\/h3> – Build this VMOS transverter and use all of your Kenwood TS-940’s bells and whistles -on two meters! …… W6YUY 32

Big Time Packet<\/h3> – With the help of a mainframe computer KITE can control a packet station from his desk -or from around the world …… K1TE 44

New Life on Two<\/h3> – The Yaesu FT-290R II 144-mHz Mobile\/portable Transceiver and the Tonna F9FT 9-element 144-mHz Portable Yagi …… KT2B 18

First in Filtering<\/h3> – AFtronic’s SuperSCAF …… W4THU 22

Reverse Phone Patch?<\/h3> – The 5000A Phone Remote …… N1EJF 24

Move Fast<\/h3> – The Stone Mountain Engineering QSYer …… Z21EI 26

Digitize Your Dial<\/h3> – Torrestronics’ Universal Digital Frequency Display …… WA1WMZ\/2 27

Talk on Water<\/h3> – Sailing with Ham Radio …… KA1MPL 28
\n
\n

73 Ham Radio Today Issue August 1987<\/a>
<\/h2>\n

Super Six-meter Team<\/h3> – The Yaesu FT-690R II Multimode Transceiver and the Tonna 50\/5 5-element Yagi …… KT2B 18

HW-8 Replacement<\/h3> – Heath issues the HW-9 their third-generation QRP transceiver …… WB8VGE 22

Future Packet<\/h3> – The author predicts packet radio of the future -using today’s technology! …… K2TKN 24

Packet AI<\/h3> – Hook up with KE5L and speak with TRON the computer program that simulates a live operator …… KE5L 29

Packet Directory<\/h3> – Get into a packet digipeater or PBBS anywhere in the country with this directory …… K4NGC 33

PCBs From TEC-200 Film<\/h3> – Making your own PCBs is a breeze with this new film! …… K3OF 43

The External PTT<\/h3> – Now you can get on packet with one of the most popular hand-helds -the ICOM IC-2AT …… WB5WSV 49
\n
\n

73 Ham Radio Today Issue September 1987<\/a>
<\/h2>\n

Radio At Green Bank<\/h3> – This remote site in West Virginia is home to one of the most impressive collections of radio antennas in the world …… AJ0N 16

A Foldover Cheapie<\/h3> – Convert scrap water pipe to a 40-foot fold-over antenna tower! …… KF4BI 19

Out-of-the-ordinary QTH’s<\/h3> – Here are some ideas to help you gel out on your portable antenna – when you really need to …… K4IPV 22

Non-etched Swr Bridge<\/h3> – This five-dollar afternoon project will measure swr to better than 1:1 from 7 to 435 MHz …… W6IOJ 24

220 MHz Portable Pocket J-pole<\/h3> – A low-cost quickie with more db-gain than ducks or pullouts …… KB6MIF 27

Horseflies and Grid Squares<\/h3> – A true tale of truly amazing VHF\/uHF DXing! …… KT2B 33

General Purpose VHF\/uHFAntenna<\/h3> – Build a discone for a fraction of the cost of its commercial equivalent …… WA1GPO 38

The L’i1 Fixer<\/h3> – The ultimate in simplicity …… W9THN 40

440-mHz Repeater Antenna<\/h3> – Now you can build one of the most widely used antennas in the public safety and commercial spectrum …… WB2EDV 41

The HF Half-sloper<\/h3> – A directive low-angle radiating wire antenna that fits in a small city backyard …… W8DYF 43
\n
\n

73 Ham Radio Today Issue October 1987<\/a>
<\/h2>\n

Microwave Building Blocks<\/h3> – The Doubly-balanced Mixer -enjoy superior performance over the singly-balanced mixer with this project …… WB6IGP 20

Everyman’s Microwave Amp<\/h3> – Minimal modification of a microwave cavity gives a 100-watt amp on 1.2 GHz …… KT2B 24

Linear ICs<\/h3> – Bewildered about ICs? Check out this primer …… K4IPV 26

Gunn and IMPATT Devices<\/h3> – WB6IGP shows safe methods of testing these microwave diodes …… WB6IGP 30

Satellite TV Receiver Components<\/h3> – A collection of circuits for 23cm …… KD4MDR 34

TV Tuner Scanner Converter<\/h3> – Got a junk TV? Let its tuner and a scanner receive 800-900 MHz with this afternoon project …… W6WTU 40

Troubleshooting Tips<\/h3> – Tricks for testing lezkagk opens shorts audio distortion and ICs …… W9NGP 45

Dry Cell Tester<\/h3> – A practical and useful project for the technical greenhorn …… W6WTU 48

Cadillac of HF Rigs<\/h3> – The ICOM IC-761 Transceiver …… WA4BLC 12

Know the Fax<\/h3> – The Alden Weatherchart FAX Recorder …… WB8DQT 16
\n
\n

73 Ham Radio Today Issue November 1987<\/a>
<\/h2>\n

Tesla High-frequency Transformer<\/h3> – Build this spark-excited. trans former and create your own lightning …… VE7JON 12

Signal Strength Reporting<\/h3> – Read this and know what you mean when you say “S-9 OM” …… W2OZH 15

Holiday Buyer’s Guide<\/h3> – A cornucopia of shopping tips …… Staff 20

Cubic Inch Keyer<\/h3> – Iambic keying on the HW-8 …… WB2EMS 32

Repeater Controller PC Board<\/h3> – Repeater on the fritz? Build this inexpensive repeater board and get right back on the air …… KA3AAQ 34

VIC-20 Beam Rotor Interface<\/h3> – And yet another interface project for your VIC-20! …… N1II 44

The Greenie<\/h3> – An account of a brief and tempestuous contest …… K1YSD 55

Great Little Dipper<\/h3> -electronic Equipment Bank’s DM-4061 Dip Meter …… WA4BLC 10

Novices Take Note<\/h3> -the Ranger AR-3300 10-meter Mobile Rig …… N1BLH 28
\n
\n

73 Ham Radio Today Issue December 1987<\/a>
<\/h2>\n

Welcome Newcomers!<\/h3> – A “read-this-first” for budding hams …… KA1HY 5

History of the ICOM 2AT<\/h3> – The world ‘s most popular handheld …… KT2B 18

ICOM BP-4 Charging Adapter<\/h3> – Our technical editor beats the system …… WB9RRT 20

Yaesu FT-209 Modifications<\/h3> – Expanding your HT’s horizon …… KD2WA 26

Buyer’s Guide to Handhelds<\/h3> – A little help from your friends at 73 …… NA5E 28

History of Hand-held Communications<\/h3> – Their place in western civilization …… 2MFM 30

Mobile Extender Using VOX Control<\/h3> – Wire up your transceiver to jump over mountains …… K6YDW 44

Make VIC Talk<\/h3> – This little chip offers big benefits …… WA4DSO 50

Battery Charger<\/h3> – A handy NiCd power project …… N0FNF 52

Remote Base Control<\/h3> – Work DX from your HT …… K9EID 106

EXTRA! EXTRA!<\/h3> – Icom Frequency Privilege Chart …… Staff 103

DX Prefix list<\/h3> …… Staff 104

The Kenwood 215-a Handheld<\/h3> – High-class hand-held hamming …… N1BLH 13

The Kenwood 205A<\/h3> – Affordable personal communications …… NA5E 14

The Alinco ALX-2T Mini-handheld<\/h3> – A big contender in the featherweight class …… KA1HY 16

ICOM’s 12AT<\/h3> – Breaking new ground on 23 cm …… KT2B 22

The First Dual-band HT<\/h3> – A look at the Yaesu FT-727R panel by panel …… KA1HY 24

Power Play Comparison<\/h3> – RF Concepts’ RFC 2-23 and the Tokyo Hi-power HL-37V 30-watt 144-mHz Power Amplifiers …… KT2B 34

The Banker<\/h3> – A memorable accessory for the Kenwood TS-940S\/aT …… NA1A 42
\n
\n

73 Ham Radio Today Issue January 1988<\/a>
<\/h2>\n

Welcome Newcomers!<\/h3> – Let’s talk about it! …… KA1HY 4

Working the World Fast<\/h3> – Heed this advice and you can’t miss …… N6HYK 11

W87PAX: DXing from the Pan American Games<\/h3> – A record-breaking success …… KA9OIH 14

Troubleshooting Tricks #1<\/h3> – The road to repair is easier than you think …… Harshbarger 26

The Colvins<\/h3> – DXing is the life for Lloyd and Iris …… N6HYK 28

DX with QSL Cards<\/h3> – Tips to improve returns …… N8FU 31

A Case for DX Nets<\/h3> – Skill and discipline make hams valuable …… NO8M 32

Digital Accuracy for Yaesu FRG-7<\/h3> – Making a hard-to-beat receiver even better …… WA9RDE 35

DX Nets to Check Out<\/h3> – DX gatherings around the clock …… Staff 39

73 Dynasty Award Announcement<\/h3> …… Staff 41

DX Country List<\/h3> – 400 -ours is bigger and better …… Staff 42

The Winners<\/h3> – 75’s top 100 …… Staff 43

DX Newsletters<\/h3> – Essential reading for serious country hunters …… W6CF 46

A Session on the Commodore 64\/128<\/h3> – Accurate predictions of DX band openings …… KD5EA 48

Skis across the Pole<\/h3> – An impending historic Canadian\/russian trek …… NA5E 72

Traveling Abroad?<\/h3> – Here’s how to DX as you go …… Phenix 78

Novice 10-meter DX<\/h3> – C’mon and join the fun! …… VP2ML 102

IC-475A<\/h3> – Reaching for the top -70cm in style …… KT2B 21

Heil Boomset BM-10<\/h3> – A great bit of magic from Sound Wizard Heil …… N8EFG 25
\n
\n

73 Ham Radio Today Issue February 1988<\/a>
<\/h2>\n

Welcome Newcomers!<\/h3> – Low power isn’t always a disadvantage …… KA1HY 4

Hamming Around<\/h3> – High tech trekking …… KA8OVA 11

1750 Experimenters Band<\/h3> – Fun VLF transverter …… WD4PLI 20

The Winners (Who says there’s no action at 23 cm?)<\/h3> …… 27

20 meter Mini Receiver<\/h3> – Super small superhet …… K1BQT 28

Intro to 1750 meters<\/h3> – The lowdown on license-free fun …… W2IMB 31

Drifting Along the Telegraph Trail<\/h3> – Landline brass pounding -looking back …… W6CK 34

License-free Transmitter<\/h3> – Share the broadcast band with the big boys …… W4THU 44

Helping HW-9<\/h3> – Making a good rig even better …… W0WUZ 50

AEA 10-meter Handheld<\/h3> – CQ DX with an HT …… WB8VGE 15

TR-751A Kenwood<\/h3> – This 2-meter multimode has smarts …… N1BLH 18

Commodore 64 Power Supply<\/h3> – Use your C64 in the field …… NA5E 19

Tone Gen Software<\/h3> – The C64 becomes a workbench asset …… NA5E 32

International Radio’s Filter Test<\/h3> – Two ways to improve reception …… W4THU 46

Two Circuits Texts<\/h3> …… WB9RRT 42

LF\/mF Scrapbook<\/h3> …… WB9RRT 47
\n
\n

73 Ham Radio Today Issue March 1988<\/a>
<\/h2>\n

Welcome Newcomers!<\/h3> – Why just VHF antennas …… KA1HY 4

Winnebiko<\/h3> – A close look at Winnebiko’s 2 meter lifeline …… N4RVE 12

10 meter Beam<\/h3> – With a little money you can gain a lot …… N0BLX 14

Heath SB-200\/220 Mod<\/h3> – More mileage out of a workhorse amp …… VE5XZ 20

Ten Meter Meteor Scatter<\/h3> – DXing with a difference …… WB5KYK 22

Mobile Antenna<\/h3> – Two meters on a broadcast band antenna! …… W4JC 28

Antennas in the Spring<\/h3> – Spring cleaning above the roof line …… WA4BLC 34

4 Element Yagis<\/h3> – Beams in the balance -both are for you …… KT2B 35

Telegraph Trail Part 2<\/h3> – A telegraphic trip through time …… W6CK 50

Down East Microwave<\/h3> – Two loop yagis for the hard-to-please …… KT2B 11

Create an X-209 Yagi<\/h3> – This 9-element rates a 10 …… KT2B 16

Larsen HT Antennas<\/h3> – HT antennas for every occasion …… W7XU 26

Book Reviews<\/h3> – Something for everyone …… WB9RRT 27

Comrade Untenna and Power Booster<\/h3> – This package packs a punch …… KA1HY 31

Book Review<\/h3> – Transmitter hunting …… KA9KAF 37

Datong Direction Finder<\/h3> – High-tech transmitter tracking …… WA4BLC 38

MAXCOM<\/h3> – The name says it all …… W7XU 42
\n
\n

73 Ham Radio Today Issue April 1988<\/a>
<\/h2>\n

Welcome Newcomers!<\/h3> – Hams were meant to serve in the public interest …… KA1HY 4

Ham Radio at Its Best<\/h3> – The IARN: A shining example of service …… KA1PZV 11

San Salvador Earthquake<\/h3> – Volunteers please step forward! …… W9ELR 12

The BEARS Project<\/h3> – An innovative middle school radio program …… KZ1Z 14

Universal Power Supply Module<\/h3> – Your power problems arc solved with this project …… K1BQT 20

Emergency Packet<\/h3> – Definitive portable packet for troubled times …… WA1FHB 25

Bicycle-mobile Packeteering<\/h3> – The Winnebiko and AX.25 were meant for each other …… N4RVE 41

Drifting Along the Telegraph Trail<\/h3> – Part 3: It’s nice to be wanted …… W6CK 50

4 + 1 Decoder<\/h3> – Build this double-duty DTMF decoder …… WA3LTJ 55

TR-110 Transceiver<\/h3> – The tops on ten from Amp Supply …… K1BQT 25

Kenwood TS-140<\/h3> – The little big rig …… WA4BLC 30

ICOM IC-900 Multi-band FM Transceiver System<\/h3> – Fantastic FM from the future …… KT2B 34

AEA FAX Software<\/h3> – Innovative PC facsimile program for the PK-232 …… WB0QCD 38

Stop Look and Listen!<\/h3> – Armchair travel made easy with Passport to World Band Radio …… NA5E 37
\n
\n

73 Ham Radio Today Issue May 1988<\/a>
<\/h2>\n

Why Do Satellites?<\/h3> – More reasons than you can argue against …… N5BF 11

UoSATS<\/h3> – Space science from Surrey …… N5AHD 20

OSCAR History<\/h3> – Project OSCAR is nearly 30 years old …… K6LFH 27

Hamsat Awards<\/h3> – Set your sights high …… WB5RMA 30

Hard-line Connector<\/h3> – A little work saves a Lot of money …… W5PFG 32

Uncle Wayne’s Ham Shack Winners<\/h3> – The happiest hams of the month …… 34

Winnebiko Power Supply<\/h3> – New technology in a practical package …… N4RVE 38

1987 World SSB Championship Contest Results<\/h3> – Better late than never …… Staff 41

FAX Program for PK-232<\/h3> – PC graphics for fine facsimile …… WB0GAI 49

Dayton Schedule<\/h3> – Flash! The latest guide to Dayton happenings …… Staff 55

Armed Forces Day 1988<\/h3> – Make the most of military contacts in May …… Delperdang 47

Ten Tec Paragon<\/h3> – Born in the USA …… NX2C 14

ICOM IC-r7000<\/h3> – Sophisticated scanning like never before …… K3RVN\/g0EZZ 44

Definitive DXing and Practical Antennas<\/h3> – Two timely topics from the League …… W7XU
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73 Ham Radio Today Issue June 1988<\/a>
<\/h2>\n

Flip-flop\/latch Circuit<\/h3> – Welcome to digital electronics …… W4RNL 11

New York City School Program<\/h3> – Carole Perry’s kids learning with radio …… WB2MGP 14

Digital X-Y Oscilloscope<\/h3> – Handy tuning scope project …… WA9TYU 20

Care and Feeding of PBBS<\/h3> – Etiquette and protocol for packeteers …… WA1FHB 22

UoSATs Part II<\/h3> – Fascination and fun with these British birds …… N5AHD 29

Buyer Beware<\/h3> – Sensible advice for buying second-hand gear …… WD8RCL 32

A Pulsed Bi-phase Communications System<\/h3> – 19.2kB in less than a kilohertz! …… WA1FHB 34

Telegraph Trail Part IV<\/h3> – Our final chapter …… W6CK 38

Briefly Speaking: RS-232<\/h3> – The straight story on what it means …… W5PFG 40

Bicycle Mobile R&D Lab<\/h3> – Small is beautiful …… N4RVE 42

Digital Voice Compression<\/h3> – Let’s talk about it …… WA3YQY 51

Voltage Sampling with a Computer<\/h3> – Practical A \/d conversions …… Magee 54

Ramsey D-5100 Digital Auto-ranging Multimeter<\/h3> – A top flight tool for the bench …… WB9RRT 18

ICOM IC-375A 220 MHz Multimode Transceiver<\/h3> – A rig worth waiting for …… KT2B 26
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\n

73 Ham Radio Today Issue July 1988<\/a>
<\/h2>\n

Code Test Sure Shot<\/h3> – Pass 5wpm without learning code! …… KA0NTK(SK) 10

Sequential Two-tone Encoder<\/h3> – Easy encoder project …… WB7CPT 14

Novice Band Nets<\/h3> – Check in and upgrade too …… W6DDB 18

How To Improve Code Speed<\/h3> – Learn from others’ hard work …… W9NGP 21

Direction Finding Loop<\/h3> – T-hunt antenna in a can …… WA4UZM 22

Morse Code Motivation<\/h3> – Pointers for teachers from a teacher …… KZ1Z 24

Hornblower Two<\/h3> – Unlimited control flexibility …… W5PFG 26

You Will Upgrade!<\/h3> – A system for written and code exams …… K0HBQ 34

Pulsed Bi-phased (Part 2)<\/h3> – High-speed data system cuts bandwidth …… K6HH 40

How Not To Run A Novice Class<\/h3> – On a humorous note …… KC0ES 44

Flip-flop Latch Circuits (Part 2)<\/h3> – Final pan of a practical tutorial …… W4RNL 48

Problems In Learning The Code<\/h3> – Yet another way to get unstuck …… K9KZT 54

Security Alert!<\/h3> – Protecting the Winnebiko with technology …… N4RVE 58

Care & Feeding of the PBBS (Part 2)<\/h3> – Some final points for packeteers …… WA2FHB 60

Yaesu FT-747GX<\/h3> – Affordable fun from Yaesu …… WA4BLC 12

GGTE Morse Tutor<\/h3> – Uncomparable computer-based code course …… KA1HY 20

Datong’s Great Add-on Filters<\/h3> – High-tech interference solutions …… WA4BLC 30

Gordon West Novice Course<\/h3> – Our Associate Publisher is a believer …… Norwood 37

AR-460D LCR Meter<\/h3> – A timely troubleshooting tool …… WB9RRT 39
\n
\n

73 Ham Radio Today Issue August 1988<\/a>
<\/h2>\n

What a Mess!<\/h3> – 73’s Home-grown DXpedition …… W2NSD 10

Auto VIM: Part One<\/h3> – A power supply with some smarts …… W4RNL 12

Handheld Transformation<\/h3> – Kenwood HT updates you can do yourself …… N6LRT 19

The Quest for Ultra Portability<\/h3> – How do you get all that stuff to fit on a bike? …… N4RVE 20

Digicom 64<\/h3> – Software packet system for the C-64 …… W2UP 22

Smart “S” Meter<\/h3> – A little help goes a long way in T hunts …… N6JSX 24

Introduction to IBM PC Clones<\/h3> – To PC or not to PC? …… N8GNJ 28

Amateur Radio in National Emergencies<\/h3> – When the going gets tough …… W9JD 32

Modernizing the SB-200<\/h3> – A workhorse amplifier just got better …… WA4BLC 42

The Hidden Secrets of the PRO-2004<\/h3> – Tapping into even more scanning power …… KB6LCN 51

Oscilloscope Preamplifiers<\/h3> – Handy workbench item for weak signals …… Pugh 47

CAT to RS-232 Interface<\/h3> – Yaesu meets ‘232 …… N9CLX 54

Solder Iron Auto Shut-off<\/h3> – Safety first! …… KA0QHV 57

10 and 75 Meter Contest Results<\/h3> – Dusty but not forgotten …… Staff 74

Heathkit SB-1000<\/h3> – Hot HF amp from Heath …… K3RVN 15

QSYer<\/h3> – Fingertip frequency control …… WA4BLC 34

Pac-comm Micro Power TNC<\/h3> – In a word wonderful …… WB2MIC 40

PRO-2004<\/h3> – Top notch scanner from Radio Shack …… NA5E 50

Going Microwave with the ARR TR-10GA 10 GHz Transceiver<\/h3> – Fun Gunns …… WB6NOA 70
\n
\n

73 Ham Radio Today Issue September 1988<\/a>
<\/h2>\n

Antenna Systems<\/h3> – Sometimes “good” is bad and “bad” is good …… W3ZC 10

Aluminum Cloud<\/h3> – A top performer for cliff dwellers …… NF0R 14

Balloon Supported Antennas<\/h3> – How to really get out on 80 and 160 meters …… W1GV 18

MARS and Amateur Radio<\/h3> – The military affiliated radio system …… W1ZM NNN0WAJ 23

Auto VIM: Part Two<\/h3> – Smart power supply for every bench …… W4RNL 27

Pee Wee Thirty Transceiver<\/h3> – A compact 30 meter CW\/aM QRP transceiver (Part 1) …… AC9E 30

Patents are Unique<\/h3> – Protecting your brainchild …… W5PFG 39

Choosing a QSL Card<\/h3> – Which style and design reflects you best? …… WA6OHX 44

The “Crew at 22”<\/h3> – Set to fight AIDS on the air …… WB2JKJ 48

Butternut Butterfly<\/h3> – An antenna for small quarters that takes a little more work-but well worth it! …… WA4BLC 16

HF Mobileering<\/h3> – W6AAQ helps you avoid the common pitfalls of mobile HF operation …… NA5E 22

Nye Viking RFM-003 RF Power Monitor<\/h3> – One of the more versatile RF monitoring devices on the market …… NS1B 36

Beauty and the Best<\/h3> – Something old something new from Vibroplex …… NA5E 40

Ramsey CT-90<\/h3> – A portable frequency counter …… WB9RRT 42

The MFJ Gray Line DX Advantage<\/h3> – The computer terminator …… KA9KAF 49
\n
\n

73 Ham Radio Today Issue October 1988<\/a>
<\/h2>\n

Packets Full of Pixels<\/h3> – Digital video is now available to the mortal ham …… WD8AQX 10

A Trip Through The Microwave Spectrum<\/h3> – The scoop on what goes on between 1-10 GHz …… KT2B 14

10 GHz Polaplexer<\/h3> – Unique way to go full-duplex on 3 cm …… WB6IGP 20

VHF\/uHF Tape Antenna<\/h3> – Fast n’ cheap way to get active on 2 meters and above …… WB3KCZ 24

Portable Re-entrant Cavity Antenna<\/h3> – This “can-do’ whip gives better HT antenna performance …… W7ACI 29

Pee Wee Thirty Transceiver -part 2<\/h3> – The wind-up on getting on this rag-chewers’ band …… AC9E 33

Passions of the Ether<\/h3> – See yourself in one of these amateur archetypes? …… N4RVE 35

Antenna Systems -part 2<\/h3> – Antenna system demystification …… W3ZC 38

Microwave Test Equipment for 10 GHz<\/h3> – How to use the versatile detector mount …… WB6IGP 40

Inexpensive Display for WEFAX<\/h3> – Use your PC to check out the weather …… N1VC 77

Alinco 24T 144\/440 MHz FM Transceiver<\/h3> – Don’t just take this reviewer’s word for it -check out this little gem! …… WA6OHX 13

SSB Electronics LT-33S<\/h3> – Use this or …… KT2B 27

W2DRZ 902 MHz Linear Transverter Module and Sequencer<\/h3> – This to get on this underused band with a 2-meter rig …… KT2B 30

Down East Microwave Model 2345LY<\/h3> – Unusual antenna with great gain on 1.2 GHz …… KT2B 44

Motron AK-10<\/h3> – This unit ends unnecessary squelch breaks …… KA1JJM 58
\n
\n

73 Ham Radio Today Issue November 1988<\/a>
<\/h2>\n

Homing In<\/h3> – Find out about the fun of RDF …… K0OV 18

All About Henry<\/h3> – Wide range inductance checker …… WB4DCV 22

Lap Top Repeater Controller<\/h3> – Why build more hardware than you have to? …… KF5WO 27

Kenwood 4100A Crossband Repeater<\/h3> – Convert your mobile rig to a two-band repeater …… W3RW 39

Ultimate Repeater IDer<\/h3> – Store a library of IDs to choose from …… K7PF 45

Computerized Tuning<\/h3> – Tune your rig from a micro keyboard …… KF6DF 49

Life of a Megacycle<\/h3> – The joy of bicycle mobile HF …… N4RVE 55

Maggiore Hi Pro Basic Repeater<\/h3> – Check this out before spending a bundle on a machine …… K1ZJH 10

Hazer Antenna<\/h3> – Goes where you don’t want to …… W5PFG 11

Kenwood TM-221A<\/h3> – Honorable descendant of the TR-7400 …… KT2B 13

CES 510SA-iI Enhanced Telephone Interconnect<\/h3> – A solid full-featured controller …… WA4TEM 14

RF Concepts Model 3-312 220 MHz Power Amplifier<\/h3> – The pick of the bricks …… KT2B 24

LF Engineering L-101S Receiving System<\/h3> – Quick way to listen in on VLF …… WB9RRT 51

Nye-viking MB-v-a 3000 Watt Antenna Matcher<\/h3> – Who says they don’t make’em like they used to? …… KA1XO 62

Orion HT Antenna<\/h3> – Get the most peribrmanee out of your hand-held …… W7XU 63

Wishbook of Circuits<\/h3> – A potpourri of circuits …… WB9RRT 37
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\n

73 Ham Radio Today Issue December 1988<\/a>
<\/h2>\n

Civil Air Patrol<\/h3> – Most radio fun you can have without a license …… KA9KAF 12

RS-232 Port For The Commodore C-64<\/h3> – Give the ham’s favorile computer this most standard interface …… Neal 14

Don’t Lose Your Memory<\/h3> – Don’t let a dead lithium battery ruin your listening pleasure …… K9EUI 20

Packet Tuning Indicator<\/h3> – More easily enjoy world-wide packet operation …… W2EKY 24

Midland 13-509 Modifications<\/h3> – Two nice low-cost additions to a popular rig …… WB9YBM 27

Decatur Ham Launches Satellite<\/h3> – A satellite to go up in the name of education …… WB8UUE 29

Charging Without Overcharging<\/h3> – No more backup battery burn-up …… WB8VQR 34

Buyers’ Guide<\/h3> – 73’s picks of 1988’scrop …… Staff 57

Yearly Index<\/h3> – Easy reference for 1988 articles reviews and columns …… Reneau 89

The TE-144 Deluxe CMOS Keyer<\/h3> – Solid keyer at the right price …… WA6OHX 11

Bel-tek’s CMOS keyer kit<\/h3> – The best dit and dah for the buck …… WA9FPU 19

The Carolina Windom<\/h3> – An old design made even better …… WA4BLC 49

The ICOM 32AT dual-band HT<\/h3> – Full Duplex in a Handheld …… WB2MIC 68

B&W PT-2500A HF Amp<\/h3> – QRO? QRO! …… NA5E 78

<\/h3>
\n
\n

73 Ham Radio Today Issue January 1989<\/a>
<\/h2>\n

Hacker’s Shack<\/h3> – Where hardware fantasy and reality meet …… N4RVE 44

Trouble-shooting Guide For Switching Power Supplies<\/h3> – Chart to help minimize trouble-shooting time …… W9NGP 50

More Microwave Test Equipment For 10 GHz<\/h3> – Several more uses for the versatile detector mount …… WB6IGP 12

Super Simple Attenuator<\/h3> – Very cheap -and variable! …… K3OF 14

The 220 MHz All-mode Transverter<\/h3> – Hard-core home-brewer’s delight …… W6YUY 18

Cheap and Dirty Oscillator<\/h3> – Fast audio frequency source …… VE1VQ 29

Inexpensive Marker Generator<\/h3> – Tightwad’s way to stay in calibration …… WB6DFQ 35

Which End Is Up?<\/h3> – Now it’s a snap to find the coax short …… W7RXV 38

C-64 Voltage Protector<\/h3> – Protect Commodore’s chips from line over-voltage …… W0YJO 40

New Uses For Old Meters<\/h3> – Tool any meter to read a variety of values …… KC3YB 58

Simple LED Checker<\/h3> – Great starter homebrew project! …… Thompson 61

AutoSketch and Amateur Radio<\/h3> – Economy CAD for home and shack …… VE6BGL 30

Bird Model 4381 RF Wattmeter<\/h3> – Nice complement to the venerable 43 …… WB9RRT 32

VisiTel On-the-air<\/h3> – Unique SSTV …… W8ASF 36

Hamcall<\/h3> – Dial-up callsign directory …… NS1B 46

Coaxial Dynamics Model 81000-a Directional RF Wattmeter<\/h3> – New kid on the block …… KT2B 80

1934 Official Short Wave Radio Manual<\/h3> – A don’t-miss for nostalgia buffs …… NR1A 54
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\n

73 Ham Radio Today Issue February 1989<\/a>
<\/h2>\n

Getting High On Packet<\/h3> – World-wide packet? Here’s how on HF …… WB6RQN 50

One-stage 80-meter CW Transceiver<\/h3> – Enjoy the thrill of rolllng your own rig …… WB3ELL 28

TCM 3105 Modem For The Digicom > 64<\/h3> – Plug in to 1200 baud packet …… N4PLK KJ4GP W4KUM WD4PVS 42

Simple CW IDer<\/h3> – Useful for repeater ID and unattended fox …… WN0EHE 54

Kenwood TS-940S<\/h3> – First-class full-featured HF rig …… WB6RQN 12

lCOM IC-781<\/h3> – Scope out this DX dream machine …… WA4BLC 18

Just The FAX<\/h3> – Info-tech’s M-800 FAX converter …… WB2QLL

Shakespeare Big Stick<\/h3> – Too bad poor Yorick never knew the joy of 10-meter DX …… WA4BLC

Ham-10 Antenna<\/h3> – 10-meter mobile fun …… N1BLH 33

Magnus Mobile Amplifier<\/h3> – Mobile QRO …… WB6NOA 34

Pro-67 HF<\/h3> – Solid multi-band HF beam …… W4WDR 38

lCOM IC-2GAT<\/h3> – IC-2AT’s worthy replacement …… WA4BLC 46

Shirt pocket ICF-sW1<\/h3> – World in your pocket for $300 …… KA5S

Star Circuits 6-meter Filter<\/h3> – Dole’em out to your neighbors! …… W8CM 57
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\n

73 Ham Radio Today Issue March 1989<\/a>
<\/h2>\n

Mnemonic Morse<\/h3> – Use one digital system to learn another …… W8LHL 52

Grid Square Location Aid<\/h3> – Invaluable antenna aiming program for microwavers …… WB6IGP 55

Control Head for the TS-440S<\/h3> – Go HF mobile -with the 440S in the trunk! …… WB0UVN 18

Switching for Older RF Amps<\/h3> – Safely key any linear amp with a newer HF rig …… WA4BLC 19

Link Controller for the S-cOM 5K<\/h3> – Turn this popular controller into a repeater networker …… KF7FW 24

Breadboard a VCXO<\/h3> – CB-to-10 mods are back! …… N8BSG 43

Feed-point Protection<\/h3> – Keep your bumper-mount feed-point free of dirt and weather …… K3OF 47

ISOTRON 80<\/h3> – Indoor antenna for 80m …… VE1GA 20

KB6MT’s Video Technician Course<\/h3> – Join the fastest-growing license-class group …… Reneau 31

The MFJ-931RF Tamer-ground<\/h3> – Apartment-dweller’s way to better stray RF control …… N1BLH 34

Maggiore HPC-201 Repeater Controller<\/h3> – Full-featured and priced right …… K1ZJH 37

The Heath HK-21 TNC<\/h3> – Good things now come in smaller and smaller packages …… N7KHU 38

Yaesu FT-790RII All-mode Transceiver<\/h3> – This rig offers versatile 70cm operation …… KT2B 49
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\n

73 Ham Radio Today Issue April 1989<\/a>
<\/h2>\n

Hamfest Survival Guide<\/h3> – Tips on how to more wisely shop for hamfest gear …… WB9IVR AA4QA 20

Stay With the State Of The Art<\/h3> – Keep in the know without blowing your budget …… W1UO 52

Powerful Crystal Set<\/h3> – Better reception on a classic no-power rig …… Haas 12

Quick and Easy 2m\/440 MHz Antenna<\/h3> – Ideal for your dual-band HT -and costs pennies to build! …… W3RW W3LOY 18

How to Feed an Apple to an IBM Monitor<\/h3> – $10 interface for your Apple 11+ and an IBM monitor …… WB4DCV 22

WA6TEY 144\/220 MHz RDF Quad Antenna<\/h3> – Easy-to-build directional VHF antenna for RDFers …… N6JSX 26

Slingshot for Two<\/h3> – Big 2-meter signal for under $5 …… KA80GD 32

FM Split for the Uniden HR2510<\/h3> – Push-button repeater operation for this hot 10m rig …… WB9WDH WA9QDZ 34

Revamp Bird Elements<\/h3> – Shore up those old wattmeter elements …… HL9BK\/k2KSY 48

Procomm’s Wideband Supercone<\/h3> – Continuous coverage from 100 MHz to 1.2 GHz …… W1XU W7KTK 14

Kenwood TM-621A<\/h3> – 2m\/220 MHz FM dual-band mobile transceiver …… KA1LR 24

Aries-1<\/h3> – Choice logging program for RTTYers …… KE0KB 28

The Delta Loop DL-102<\/h3> – Get on 10m with this unique full-wave beam …… W1FYR 38

Austin Suburban Tri-bander<\/h3> – High performance from 144 to 440 MHz …… W1XU 41

The Universal M-7000<\/h3> – A digital decoder’s delight …… WB2QLL 44

MFJ-1278 Multi-mode Controller<\/h3> – Inexpensive quality data controller …… N1BLH 64

Kenwood TH-25AT<\/h3> – Pico-sized mega-featured …… KB1UM 70
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\n

73 Ham Radio Today Issue May 1989<\/a>
<\/h2>\n

Decoding OSCAR Telemetry Part 1<\/h3> – Decode any OSCAR beacon …… G3RUH 20

AMSAT Satellite Tracking Software <\/h3>– Choose from a host of great tracking programs …… W5IU 38

Experimental OSCARS<\/h3> – The story of the UoSAT program …… G0\/k8KA 62

Space Education Network<\/h3> – Bringing AO-13 into the classroom …… K9PVW and Barr 74

Radio Links to Phase III-d<\/h3> – Making worldwide hamsat communication even more accessible …… DJ4ZC 77

The AMSAT-NA Microsats<\/h3> – The new breed of miniature hamsats …… N5BF 83

Inexpensive Mode-l Dish Antenna<\/h3> – Low-cost high-gain antenna …… WB5ZDP 18

Build A Simple Az-el For Mode L<\/h3> – Have two Az rotors? Make an Az-el rotor! …… WA3ETD 24

Home-brew 435 MHz Crossed Yagi<\/h3> – Budget beam for 70cm …… WB5ZDP and KG5OA 29

AANother Turnstile Antenna<\/h3> – Enhance the downlink without enhancing terrestrial QRM …… ZL1AAN 32

Mode S Receive Techniques<\/h3> – 13cm\/23cm OSCAR work isn’t as hard as you think …… WA3ETD 36

Mode L My Way<\/h3> – Save on expensive hard-line and microwave PAS …… WA8WBP 50

Polarizing\/matching Selector<\/h3> – Get in phase with any hamsat any time …… ZS6BTD 54

1269 MHz Helix System<\/h3> – Take aim with this doubled-barreled array …… WA8WBP 71

Silicon Ephemeris Tracker<\/h3> – The last word in satellite trackers …… WA5NOM 12

TS-790A<\/h3> – Kenwood’s new tri-band OSCAR rig …… W3LOY 34

Automatic Antenna Tracking with SAT TRAK III<\/h3> – For simplicity in sat tracking …… N5LCO 44

Ampire 146-oS Preamp<\/h3> – Say good-by to preamp intermod problems …… WB3JZO 67
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\n

73 Ham Radio Today Issue June 1989<\/a>
<\/h2>\n

Spread-spectrum<\/h3> – Hams too can use this mode! …… N4ICK 12

The Net\/rOM-NordLink Question<\/h3> – Bootlegged software? …… WB2KQI 34

Decoding OSCAR Telemetry Part II<\/h3> – Learn about the state of F-o-12 and OSCARs-to-be …… G3RUH 58

QRP CW Transceiver<\/h3> – Enjoy 30 or 40m QRP operation with this easy-to-build rig …… NZ5G and N5HNN 20

The G3IGU Transceiver<\/h3> – Designed for 80m QRP fun …… G3IGU 26

The 220 MHz DMOS Linear Amplifier Project<\/h3> – Give a boost to the January ’89 73 transverter project …… W6YUY 38

QRP SWR Bridge<\/h3> – Antenna system matched to the rig? Find out with the bridge …… G4FAI 44

Six Meter QRP Station<\/h3> – Build this golden oldie to get on this now-active band …… ex-YU1FR 50

CW Transceiver for 20 Meters<\/h3> – Take the challenge of 20m QRP …… G3YCC 65

Yaesu FT-411<\/h3> – Ever smaller and fuller-featured …… KB1UM 14

Ranger AR-3500<\/h3> – 100W 10m rig for $350? Read about it here! …… N1BLH 30

Portasol Butane Soldering Pencil<\/h3> – Unique approach to cordless soldering …… WB9RRT 36

MFJ Differential-t Antenna Tuner<\/h3> – A simpler surer tuner …… WA4BLC 42

Antennas West Solar Power Supply<\/h3> – Durable portable solar panel …… WB8VGE 54

Wilson 1000 Mobile Antenna<\/h3> – For 10m mobile QRO …… N1BLH 82
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\n

73 Ham Radio Today Issue July 1989<\/a>
<\/h2>\n

10 Meter Survival Guide<\/h3> – The lowdown on this versatile HF band …… N8DNX 12

“Black Bag” Portable<\/h3> – QRP OSCAR station on the go …… N6DGK 26

Harmonic History<\/h3> – Ham children lead unique lives …… O’Connell 28

Inexpensive Hardline<\/h3> – Build this Z match and save a bundle …… KA9LNV 16

Four In\/five Out<\/h3> – Independently adjustable mixed audio outputs …… KA0LDB 37

Good Mobile Audio-for Pennies<\/h3> – Easy way to feed rig audio to your car speaker system …… N1II 43

Low-band Wonder<\/h3> – An easy “all-around” antenna project …… WA4BLC 46

Upgrade Your CDR Antenna Controller<\/h3> – Add a high-grade remote antenna selector …… WA6LOD 50

Microwave Oven Transmitter!<\/h3> – Low-cost high-power microwave operation has arrived! …… KA9BYI 54

The AEA FSTV-430<\/h3> – Latest 70cm ATV transceiver …… N0IVN NQ9I and WB8ELK 20

Amiga AVT System<\/h3> – Quantum leap in SSTV and FAX technology …… K3HKR 29

GMS-403 NiCd Charger<\/h3> – Erases charge level “memory” and charges almost any NiCd …… KA9KAF 34

PC Electronics’ TX-33<\/h3> – ATV on the little-used 902-928 MHz band …… WB8ELK 44

Azimuth 100 Fluxgate Compass<\/h3> – Microwave hilltoppers take note! …… WB6NOA 66
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\n

73 Ham Radio Today Issue August 1989<\/a>
<\/h2>\n

Find Your Signal the First Time!<\/h3> – How to quickly deal with Doppler shift on the hamsats …… AA6CQ\/vE6 44

JEZ-jugendelektroniczentrum<\/h3> – First-class ham education program …… HB9DU 46

CTCSS Fast and Cheap<\/h3> – Simple PL tone board project …… N6UE 13

COCOA-a COllinear Coaxial Array<\/h3> – Deluxe 80m wire antenna …… W2OZH 34

Control Your Rig from a PC<\/h3> – This project lets your rig and home computer talk to each other …… N7IPY 34

Full-wave VHF Vertical Antenna<\/h3> – Easy-to-build good gain antenna …… AF8B 42

Need FM?<\/h3> – Add this mode to your rig at little cost …… KB2BQK 48

10 GHz RF Preamp<\/h3> – Get started on putting together your 3cm system! …… WB6IGP 49

IF Shift Cheap<\/h3> – Quick ‘n’ easy QRM-buster for your older rig …… W0WUZ 53

Kantronics HAM<\/h3> – Multi-mode controller with packet gateway function PBBS and much more! …… WB6RQN 18

Ameritron AL-80A Linear Amp<\/h3> – This reliable 1kW amp won’t drive you to the poorhouse …… W1FYR 28

Ramsey COM-3<\/h3> – Quality service monitor at less than one-third the cost of ~ tpse ers …… WB9RRT 32

Ramsey SR-1 Receiver Kit<\/h3> – SW listening and home-brewing fun for only $25 …… WA9PYH 38

Uno Dos Cuatro<\/h3> – Introduction to the “numbers” stations …… W3LOY 31
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\n

73 Ham Radio Today Issue September 1989<\/a>
<\/h2>\n

Vertical Antennas at HF: Part I<\/h3> – The inside story on vertical antennas …… W1GV 38

Build a 30 Meter Trap<\/h3> – Modify your Cushcraft AV-4 or AV-5 for this WARC band …… KE0UV 11

Unique 12 and 17 Meter Dual-band Beam<\/h3> – Build this for an 8 dBd signal! …… W6YUY 20

Kaboom Micro Keyer<\/h3> – For safe mobile CW operation …… KB1UM 28

3\/4 Inverted “U” for 160m<\/h3> – Big signal on the Top Band …… WA3EKL 32

The Hamfester<\/h3> – “Crowdbuster” for your HT …… NM9P 34

Safari Special<\/h3> – Cheap ‘n’ easy set-up-anywhere vertical dipole …… N4UQT 44

Beefing Up the Uniden and the HTX-100<\/h3> – More than double your Uniden’s output power …… KC4HGH 48

AEA AT-300<\/h3> – Top-notch T-network HF antenna tuner …… KA1LR 18

Kenwood TS-680S HF Transceiver<\/h3> – Improvements on the trusty TS-140s …… N1BLH 30

Uniden Bearcat BC100XLT Hand-held Scanner<\/h3> – The first HT scanner? …… KA1MDA 52

Two Must-adds for Your Library<\/h3> – Power supplies and microprocessors …… WB9RRT 50
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73 Ham Radio Today Issue October 1989<\/a>
<\/h2>\n

Setting Up a Packet Radio Station<\/h3> – Read this for the info the how-to books left out! …… WB6RQN 14

Digital Dreams<\/h3> – The future of packet radio has arrived …… N3EUA 28

TNC PPM without the PC<\/h3> – Give your older TNC personal mailbox capability with just a few keystrokes …… WB6WKB 30

Packet Radio in Japan<\/h3> – Bits of info on packet in the land of the Rising Sun …… WA1LBP 38

Packet Radio and Hi-tech Nomadics<\/h3> – How packet radio fits in with the world’s highest-tech bicycle …… N4RVE 48

TexNet Packet-switching Network<\/h3> – Check out this highly effective low-overhead packet network …… WD5IVD 54

Amateur Packet Networking<\/h3> – Going beyond keyboard-to-keyboard QSOs …… WB6RQN 60

DX Dynasty Awards<\/h3> – The Dynasty grows …… WB2DIN and 73 Staff 65

TCP\/iP for the Macintosh<\/h3> – Merging this powerful networking system with a user-friendly micro! …… WA8DZP 68

Vertical Antennas at HF -part II<\/h3> – More surprising facts about HF verticals …… W1GV 70

Packet Racket Lip Zipper<\/h3> – Automatic rig speaker silencer for packet operation …… KB1UM 13

My SX-64 Runs Digicom!<\/h3> – Run this popular low-cost packet interface on C-64’s portable brother …… KA9ELV 24

Put Your IC-22S on Packet<\/h3> – Dust it off and dedicate it to 2m packet! …… KE4PC 31

KAM Box<\/h3> – Switch mode and band in an instant …… N4AQG 32

One-chip RS-232 for the C-64<\/h3> – Quick ‘n easy level converter …… KB0CDQ 34

Standardizing the Radio\/tNC Interface<\/h3> – Get up and running quickly with any rig\/tNC combo …… WB6RQN 40

Improve Your TNCs DCD Circuit<\/h3> – For a faster and smarter DCD …… N7CL 50

HF Packet Tuning Aid<\/h3> – Hear your way to dead-on tuning …… W6IOJ 80

The Quickchanger<\/h3> – This makes mixed-mode\/band operation a breeze …… KA3MRX 84

DRSI PC Packet Adaptor<\/h3> – Packet interface on a PC expansion card …… WB6RQN 20

GRAPES 56 Kbps Modem<\/h3> – Transfer large program files in a flash on packet! …… KA9Q 42

DX Helper<\/h3> – DX software for the Macintosh …… WB8EHS 59

Flodraw<\/h3> – Simple schematic drawing on your PC …… WB9CWE 99
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73 Ham Radio Today Issue November 1989<\/a>
<\/h2>\n

Sing for the unsung Heroes<\/h3> – Let’s recognize our clubs selfless volunteers! …… K5CVD 36

1989 Holiday Wish List<\/h3> – Some of the best values for holiday gifts …… 73 Staff 60

FLAVORIG!<\/h3> – Have a Radio Shack Flavoradio? Turn it into a 80-meter CW transceiver! …… KBlUM 12

The Bitchaser<\/h3> – Build this versatile piece of test equipment for digital circuitry …… K4OND 18

Bargain Audio Frequency Meter<\/h3> – $10 and an easy evening of home-brew gets you this very useful test bench item …… KB5CTH 28

Easy Tuning for the Uniden HR2510<\/h3> – Tune this popular 10m rig while keeping your hands on the steering wheel …… K3JML 38

Three-in-one Antenna Tuner<\/h3> – Matches virtually any random wire …… KB4ZGC 44

Instant Track<\/h3> – Full-featured satellite tracker at a near-shareware price …… N4RVE 16

Yaesu FRG-9600 VHF\/uHF Receiver<\/h3> – This VHF-microwave scanner offers some fascinating listening …… WlXU 24

PacComm’s NB-96 High Speed Modem<\/h3> – Yes 9600 baud packet on 2m is possible-and even affordable! …… W2VY and K6KGS 30

Elenco AC Adapter<\/h3> – Check AC quickly easily and safely …… WB9RRT 46

Computing Across America<\/h3> – Thousands of miles around the US on a high-tech bicycle? A review of Steve N4RVE’s enthralling account …… KA9KAG 90
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\n

73 Ham Radio Today Issue December 1989<\/a>
<\/h2>\n

VOX for HTs<\/h3> – No-hands hand-held hamming …… KA8HML 9

Two Meter Mobile Rig<\/h3> – Sick of anemic HT mobile operation? Pep up your handie with this booster …… N8KDD 22

Poor Boy Satellite Station<\/h3> – Coat hanger + SO-239 connector = Mode A uplink antenna! …… N5LKJ 24

Color SSTV for the Atari ST Part I<\/h3> -fast and easy way to get on this fascinating mode …… WB2OSZ 38

Yaesu FT-470 2m\/70cm HT<\/h3> – Two meters and 70cm in a micro-sized hand-held …… KB1UM 18

Breadblox Breadboarding System<\/h3> – The ultimate in flexible circuit experimentation …… WB9RRT 25

The ICOM IC-2SAT<\/h3> – ICOM’s stylish adciition to their pico-sized 2m HT line …… KBlUM 29

Ramsey QRP-40 Transmitter<\/h3> – $30 and a few hour’s building time gets you out on this popular DX band …… WB0E 32

Mirage D15 70cm Amp<\/h3> – Get more bang for the buck with this brick …… KT2B

Communications Satellites-a Monitor’s Guide<\/h3> – For those who wanted to know all about these birds but didn’t know where to ask …… WA5ZIB 26
\n
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73 Ham Radio Today Issue January 1990<\/a>
<\/h2>\n

The King and Us<\/h3> – King Hussein VE6JY1 visits the Canadian West …… McGregor VE6VIP 9

Poor Man’s Service Monitor<\/h3> – A must for serious FM experimenters …… N6MWS 10

The 1 1\/4 Meter Serendipity Antenna<\/h3> – Convert your Bearcat scanner antenna into a real hot-shot on 220 MHz …… KA1LCC 18

Painless PCBs<\/h3> – How do you design a printed circuit board from a schematic? Read this for some handy pointers …… WB9RRT 22

Continuity Beeper<\/h3> – Build this project for continuity checking convenience ……W9DTW 26

Color SSTV for the Atari ST Part II<\/h3> – An even better (and still cheap) way to get on this exotic mode ……WB2OSZ 41

Yaesu FT-4700RH<\/h3> – Versatile 2m\/70cm mobile transceiver …… K3RVN\/g0EZZ 20

The Portal System<\/h3> – Greenhorn ‘s way to explore ham radio’s most fascinating on-line forum! …… N4RVE 24

The Spectrum Probe<\/h3> – Handheld spectrum analyzer that won’t cost you megabucks …… N4RVE 30

PC QS0 Tutor<\/h3> – Puts the FUN back into studying for your ham license …… KA1TGA 35

ICOM 12GAT HT<\/h3> – 1.2 GHz operation on an HT! …… WB6IGP 36
\n
\n

73 Ham Radio Today Issue February 1990<\/a>
<\/h2>\n

Enforcing PRB-1<\/h3> – Ham antenna lib is moving forward. Keep it up! …… KA7FQW 9

The Great San Francisco Quake ’89<\/h3> – Hams do it again beautifull…mostly …… WA6ITF 18

Contest Quality Headset and Mike<\/h3> – Double duty for your VHF headset mike ……VE5XZ 10

Home-brew Spectrum Analyzer<\/h3> – Nothing like seeing what’s going on …… KE0UV 41

Protel Easytrax<\/h3> – What a breeze! PCBs on your PC …… WB9RRT 13

Ramsey SA-7 Broadband RF Amplifier<\/h3> – A performance-per-dollar miracle …… AH2AR\/8 20

The ICOM-765<\/h3> – How DDS makes a difference …… WA1EYP 22

Alinco DR-570T 2m\/70cm Mobile Transceiver<\/h3> – Sensible controls make sense! …… NS1B 26

The AEA MX-6S 6 Meter SSB\/cW HT<\/h3> – HT SSB on 6! Now I’ve seen everything …… WB6IGP 30

Ultra Comshack 64<\/h3> – Hamshack remote control from your HT …… N7IPY 32

AEA’s New MM-3: The Morse Machine<\/h3> – Memory galore A joy for CW ops …… KA9ELV 36

MFJ’s 9410 Versa Tuner II<\/h3> – SWR and tuner too …… KT2B 37

The ICOM IC-725<\/h3> – Steve checks it out …… N4RVE 54

Tune in on Telephone Calls<\/h3> – Is cellular privacy a myth? …… WA5ZIB 60
\n
\n

73 Ham Radio Today Issue March 1990<\/a>
<\/h2>\n

Give a Lift to Your ARC<\/h3> – BACAR- Balloon Carrying Amateur Radio …… ZS6AKV 10

OSCARs in the Classroom<\/h3> – Young students learn about space and amateur radio …… N8IWJ 11

Jamboree Radio<\/h3> – WBSA K2BSA: Ham Scouts hit the BC bands …… WB4BNU 19

Time Division Multiplex<\/h3> – More more-with-lessing …… W4TAL 20

Service Survey<\/h3> – Get good service for ailing rigs …… WB6NOA 28

Phase III Hamsat Signal Reporting<\/h3> – What does “S9” mean? …… W3LOY 40

Extending the Range of the Ramsey HR-4<\/h3> – for less than $4 …… N8KDD 12

The UNI-8 Porta-power Adapter<\/h3> – Power from a variety of sources …… W3AW 14

Ground Rules of RF Building<\/h3> – Valuable guidelines for PC board RF circuitry …… WB4EHS 25

The Secret of the Accessory Plug<\/h3> -Xcvr to PA-getting the right drive level …… W6YUY 36

The Dual-band “J” Antenna<\/h3> – Outstanding mobile or base station antenna for 146 and 220 MHz …… W6YUY 48

Uniden HR-2600<\/h3> – A beauty of a mobile rig! …… WA1R 32

Elenco M1900 Digital Multimeter<\/h3> – Advanced features you can afford …… WB9RRT 38

Heil Ham Radio Handbook<\/h3> – Abounding in good ideas …… N4RVE 44
\n
\n

73 Ham Radio Today Issue April 1990<\/a>
<\/h2>\n

Kenwood Corporation Service<\/h3> – Meet the fix-it folks …… WB6NOA 70

10 GHz Fun<\/h3> – Go ultra without spending a fortune …… WB6IGP 18

A Mode B Ground Station for AMSAT’s Phase III Satellites<\/h3> – You too can track OSCAR 13! …… ND9T 22

Build the Banker<\/h3> – Handy memory bank selector for the Kenwood TS-940S …… KB1UM 34

Cassette Box Special<\/h3> – QRP smaller and smaller …… KB1UM 46

A Simple Multiband HF Vertical Antenna<\/h3> – Low cost easy to raise …… KA5N 89

The Ten-tec OMNI-v<\/h3> – Quiet solid authoritative …… WA4BLC 10

Master of CW<\/h3> – MFJ’s full-featured memory keyer …… WA4BLC 30

Command Technologies “Commander” HF-2500<\/h3> – A ’90s generation linear amplifier …… N2GE 32

Elements of Microwave Electronics Technology<\/h3> – A microwave text for hams at all levels …… WB9RRT 29
\n
\n

73 Ham Radio Today Issue May 1990<\/a>
<\/h2>\n

SAREX-90<\/h3> – Ham-in-space Shuttle Missions …… W3IWI WA4SIR W3XO 9

Sharing the Adventure with Young People<\/h3> – Maritime ham classroom with a conscience …… KA1UKM 18

An Interview with Carole Perry WB2MGP<\/h3> – Who’s new in ham radio …… KB2IGG 20

The Biggest Ham Country-japan<\/h3> – Plus 9600 baud packet and tree antennas …… WA1LBP 24

Tri-state Anti-drug Air Show<\/h3> – Amateur radio ops say “Yes” to ” Say no” …… WB8YKS 45

Wideband Pre-amplifier<\/h3> – IC cool …… VE3EFC 31

A “Rad Radiator” For Your Walkie-talkie<\/h3> – Replace your rubber ducky with a dipole …… W8MDV 35

Using PLAN 13<\/h3> – Track OSCAR 13 …… WB6JNN\/9 14

The Cushcraft D3W<\/h3> – WARC band special …… WA4BLC 32
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\n

73 Ham Radio Today Issue June 1990<\/a>
<\/h2>\n

The Field Day Special The “Ray Gun”<\/h3> – A concentric combo Mode B antenna …… KA5DNP 10

TNC Connect Alarm<\/h3> – Did anyone call while I was out? …… DA1AU\/wB9EGA 14

COSIN: The COmputer Student Information Network<\/h3> – High school credits for ham radio …… WB2MIC 18

Big But Cheap!<\/h3> – Put a big signal on 40 meters for under $20 …… K1NIT 22

Two Meter Portable Quad<\/h3> – Sturdy easy to build …… K3YWY 24

Tune in on the New Frontiers of VLF<\/h3> – A simple converter brings the low-low bands in on 80 meter receivers …… WD4PLI 30

Experimental Gaussmeter<\/h3> – Low cost easy construction …… KB4ZGC 34

Standard Magnetic Field Generator<\/h3> – Build an instrument to calibrate your gaussmeter …… KB4ZGC 36

ICOM Service Survey<\/h3> – It’s almost painless …… WB6NOA 40

Backward Inverted L Antenna<\/h3> – This low-band wire antenna is a good performer on bothtransmit and receive …… W1GV 45

The SFA on 15 Meters<\/h3> – Does the job without drawing the neighbors’ attention …… KA8OGD 57

Memories<\/h3> – Dr Hess takes a look backward for the seventh time …… W6CK 66

Be a Ham<\/h3> – The invisible fraternity …… N6SIW 84

Pyramid Phase III PS-25<\/h3> – An adjustable power supply …… N1CTI 12

FCC Study Diskettes<\/h3> – For MS-dOS computers …… KA9CSO 21

PC HF Facsimile 4.0<\/h3> – Easy FAX reception for your PC …… K9EYY 26

Pipo Communications P-7 DTMF Pad<\/h3> – A quick and easy analog-to-digital tone converter …… W5PFG W5ORW 54

A Radio Journal 1912-1940<\/h3> – A book full of memories …… NA5E 28

The Cuckoo’s Egg<\/h3> – Tracking an electronic spy …… WA5ZIB 37
\n
\n

73 Ham Radio Today Issue July 1990<\/a>
<\/h2>\n

Foxhunt Radio Direction Finder<\/h3> – Homing in by sight and sound …… W9DUU 9

The Hidden Receiver Hunt<\/h3> – Exciting sleuthing without expensive equipment ……WA4TEM 12

Ten-tec Service<\/h3> – Exceptionally personal …… WB6NOA 14

Two Meter Tracking Transmitter<\/h3> – Low-cost beacon …… WA4ADG 16

You Are Here<\/h3> – Two ways to prove it …… NY9F 18

Transmitter Hunting Safety<\/h3> – Is foxhunting a blood sport? …… KA9KAG 24

C-64 &1541 Drive 12-volt Conversion<\/h3> – DC power for your Commodore …… K6YDW 26

A Return to Kit Building<\/h3> – A first step in helping students rediscover ham radio …… K4ZRA 32

Hamfest Shopping<\/h3> – The Murphy Method …… K8SJ 40

Turnstile Antennas<\/h3> – A budget antennes for HF-uHF …… KH6FMT 42

PK-232 Connect Memory<\/h3> – Lets you know what you missed …… W8GQL 44

Audio Patch Panel<\/h3> – A neat way to switch …… N1CTI 45

The C-64 Inductance\/capacitance Meter<\/h3> – Let this popular computer identify unknown capacitors and inductors …… KD9EN 54

Hooked on Foxhunting<\/h3> – Confessions of a foxhunting junkie …… N9FHF 58

ICOM CT-16 Satellite Interface Unit<\/h3> – An easy way to change VFOs …… KA7LDN 34

Ameritron Coax Switch<\/h3> – It makes band-hopping a snap! …… WA4BLC 38

The AR-880 Pocket Scanner<\/h3> – Listening above 800 Hz …… N3BAH 48
\n
\n

73 Ham Radio Today Issue August 1990<\/a>
<\/h2>\n

Omni-gain Vertical Collinear for VHF and UHF<\/h3> – Easy to build antenna for repeater or home …… WA6SVT 10

High on ATV<\/h3> – A marriage made in heaven! …… KS8J 15

Low Power Two Meter FM Transmitter<\/h3> – Inexpensive lightweight and expendable! …… WA4ADG 18

High Altitude Ballooning<\/h3> – Send your rig to the edge of space! …… WB8ELK 30

Yaesu Service Survey<\/h3> – Refreshingly flexible …… WB6NOA 46

Model Rocket ATV<\/h3> – Warp-speed television …… N8IYD 52

R\/c Helicopter ATV<\/h3> – Hover-vision …… WA6HTP 57

The AEA FSTV-430A<\/h3> – A new ATV transceiver …… WA4UMU K4NHN 24

1250 MHz ATV Downconverter and Antenna<\/h3> – Tuning in ATV repeaters the fun and easy way …… K0OV 38

TDS Amateur Television Transceiver<\/h3> – Designed to your configuration …… N0IVN 49

The Kansas City Tracker<\/h3> – Let the computer do the work while you do the operating …… WA3USG 64
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\n

73 Ham Radio Today Issue September 1990<\/a>
<\/h2>\n

Quick and Easy Field-strength Meter<\/h3> – Home-brewing can be simple! …… KM4KT 9

75 Meter 1\/4-wave Sloper Array<\/h3> – Confessions of a contester …… WA3EKL 18

Alinco Service Survey<\/h3> – Alinco may be the best show in town …… WB6NOA 20

Dummy loads for DC Supplies<\/h3> – Don’t risk your rig! …… VE1GM 22

Mobile Power Source Organizer<\/h3> – Easy 12 volt hookups for your mobile gear …… AH2AR\/8 24

End-fed Copper Dipole<\/h3> – Why buy when you can build? …… N8KDD 26

More BTUs for the Buck<\/h3> – Inexpensive alternative to industrial heat guns …… WA1FHB 28

10 Meter Base Station Antenna<\/h3> – Ready in two hours! …… WA6ZOS 29

Solution: AGC<\/h3> – A circuit with wide applications …… KA9NEH 32

Make Your Own Circuit Boards<\/h3> – The reliable method …… W6WTU 36

Build a Portable Mast Mount<\/h3> – A “spare” mount that’s always ready …… KC3YB 44

The Coil Tester<\/h3> – Measure inductance and resonant frequency …… N4TMI 48

DXDA ’90<\/h3> – The Dynasty grows …… WB2DIN Staff 81

The lsoloop HF Antenna 14\/30<\/h3> – Small efficient and portable …… KA7LDN KG7GA 10

Fluke Model 87<\/h3> – The next generation of digital multimeters …… WB9RRT 45

Ameritron AL-82 Linear Amplifier<\/h3> – Trouble-free power …… WA4BLC 52

The Weller Cordless Pyropen<\/h3> – A soldering pencil for both the bench and the field …… KA9KAF 55
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\n

73 Ham Radio Today Issue October 1990<\/a>
<\/h2>\n

Dual Voltage Bench Supply<\/h3> – Versatile solution for your power supply needs …… W6WTU 10

The SPC Transmatch<\/h3> – Improved performance for 20 through 10 meters …… W4RNL 22

ROBO-cOPY<\/h3> – Automate your shack with a CW copier …… WB9DYI 28

An Easy to Make 2 Meter Antenna<\/h3> – Make a strong J-pole from an old TV antenna …… AA5KB 32

Solar Car Race<\/h3> – Searching for an alternative …… WB8ELK 34

Service Survey Wrap-up<\/h3> – Plus -where to get your old rig fixed …… WB6NOA 38

The ZED LOOP Special<\/h3> – An inexpensive HF beam with a new twist …… W1XU 41

A Visual CW Offset Indicator<\/h3> – Add the feature the manufacturers forgot …… W6OWP 46

Above and Below 2 Meters<\/h3> – Know what you’re hearing …… N2DUP 62

DXDA ’90<\/h3> – The corrected list of countries …… WB2DIN Staff 80

The Signal Sentry<\/h3> – Miniature touch-tone decoder and message alert …… WB8ELK 14

The Yaesu FT-1000 Transceiver<\/h3> – A hot performer loaded with features …… WA4BLC 18

Antenna Quick-launch System<\/h3> – All you need is a strong arm and the QL system …… W1XU 26

GAP DX-vI Multiband Vertical<\/h3> – Better than a dipole for DX …… K5CNF 36
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\n

73 Ham Radio Today Issue November 1990<\/a>
<\/h2>\n

The Roll-up 10-20 Antenna<\/h3> – Just right for portable QRP …… WV8R 12

Working the World with 2 Milliwatts<\/h3> – The ultimate QRP challenge …… KI6DQ 14

The FIRE-bALL QRP Rig<\/h3> – 50 milliwatts of pure power …… WB8ELK 18

The Firecaler Milliwattmeter<\/h3> – Calibrate your mini-qRP rig …… WB0ESV 22

The Smoke Detector Receiver<\/h3> – Turn the FIRE-bALL into a complete transceiver …… WB0ESV 24

One-tube QRP Transmitter<\/h3> – A new use for old tubes …… Allen 26

TTL Transceiver for 40 Meters<\/h3> – The logical choice for QRP …… WB0NQM 30

Goof-proof Regenerative Receiver<\/h3> – One-transistor receive fun …… WB0NQM 34

MOuSe-feET<\/h3> – A 40 watt QSK CW amplifier …… N5HNN 36

The Dummy Ducky<\/h3> – Inexpensive dummy load for your HT! …… DA1DB\/wB7NZG 41

The Worlds of Gus Browning W4BPD<\/h3> – Tribute to a DX pioneer …… K5CVD 48

The 1990 Holiday Gift Guide<\/h3> – A buyer’s guide for holiday shopping …… Staff 61

MAX System Ground Plane Antennas<\/h3> – A Quality low-cost alternative to the ol’ “coat hanger special” …… N1GPH 8

Heathkit Adapter and Coax Cable Kits<\/h3> – Create your own versatile adapters …… WB9RRT 47

The CELJACK<\/h3> – Connect land line telephone equipment to your cellular phone …… NU3T 58
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\n

73 Ham Radio Today Issue December 1990<\/a>
<\/h2>\n

Behold the BackPacket!<\/h3> – Go take a hike with packet radio …… NW6H 9

Upgrade Your HD-4040<\/h3> – KISS your Heath HD-4040 and keep AX.25 too! …… N2BLI 19

The VOX Plus HT Accessory<\/h3> – Enjoy base station performance -with your HT! …… WA2EBY 24

Pack Your Seabag “Sparks”<\/h3> – Do you want to be a ship’s Radio Officer? …… N0MM 35

Audio Powered Tape Recorder Controller<\/h3> – Add convenience to your hamshack ……KE0UV 54

Ten-tee’s Hercules II Model 420<\/h3> – Turn your rig into a 550 watt transceiver! …… N4LBJ 22

The Lightning Bolt Dual-band VHF\/uHF Quad<\/h3> – Two antennas in one compact package …… WB8ELK 30

The PacComm PSK-1<\/h3> – Connect to the world via the Microsats! …… WA3USG 32

The ICOM IC-726<\/h3> – The HF + 6 road warrior …… N1GPH 38

PT-340 Tuner-tuner from Palomar Engineers<\/h3> – Adjust your antenna tuner without transmitting …… KA1LR 40
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\n

73 Ham Radio Today Issue January 1991<\/a>
<\/h2>\n

High Precision Frequency Standard<\/h3> – Use your TV set as a laboratory standard …… Johnson 9

Scrounger’s Guide to Recycled Electronics<\/h3> – Discover a gold mine of inexpensive parts …… W5FG 22

An HF\/vHF\/uHF Marker Generator<\/h3> – Get on frequency for less than $10 …… K84ZGC 27

A Parallel Port I\/o Board<\/h3> – Control your world! …… VE6BGL 29

The Three-terminal Regulator<\/h3> – Multiple uses in one package …… N9RF 40

Rose Parade Mobile<\/h3> – A high-tech HF remote station …… WA6TWF 46

Low-cost Mag-mount<\/h3> – Plus a complete mobile antenna system …… AD5X 55

MFJ SWR Analyzers<\/h3> – MFJ-20 7 HF and 208 VHF portables …… WA4BLC 19

The WB2OPA LogMaster<\/h3> – A versatile HF logging program for the IBM PC …… N8AHA WB8ELK 34

Kenwood’s TM-941A Tri-band FM Transceiver<\/h3> – Three for the price of one …… N0IVN 36

The EINEC Antenna Modeling Program<\/h3> – Let your computer design your next antenna …… WA4BLC 52
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73 Ham Radio Today Issue February 1991<\/a>
<\/h2>\n

Radar Detector to Microwave Receiver Conversion<\/h3> – Listen on 10 GHz cheap …… WA6EJO 10

UHF Source Dipper<\/h3> – The easy way to tune circuits from 400-500 MHz! …… WB0ESV 20

UHF Field Strength Meter<\/h3> – For 400 to 500 MHz …… WB0ESV 24

Future Modulation Amateur Television<\/h3> – Sometimes called frequency modulation …… W9NTP 32

Take a West Indies DXpedition?<\/h3> – “No Problem Mon!” …… VP2E\/w1HEO 34

Pour an Antenna for X-band<\/h3> – 20-20 vision for your microwave system! …… WA4WDL 48

The Microwave Directory<\/h3> – Where to find a wide range of goodies for operation at 902 MHz and above …… KT2B 52

An Inexpensive 10 GHz Dish System<\/h3> – The plumber’s delight …… WT0W 57

The Kenwood TH-27A<\/h3> – A mini HT with maxi features …… N1GPH 28

SHF Systems Linear Transverters for 1240 and 2304 MHz<\/h3> – Explore the microwave bands with these easy-to-build kits …… KT2B 40

The Commander II Amplifier<\/h3> – For more fun on 2 meters …… WA8SAJ 54
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73 Ham Radio Today Issue March 1991<\/a>
<\/h2>\n

Packet with the Microsats<\/h3> – The secrets of success …… KI6QE 9

Weather Satellite Reception<\/h3> – Dust off your unused scanner …… N6NHP 12

The Desert Voices Project<\/h3> – An overnight success story …… KA1UKM 18

Elementary Mode S<\/h3> – Satellite fun on 2.4 GHz-the easy way! …… KA9LNV 21

Touch-tone Activated Scanner<\/h3> – So you won’ t miss a call! …… AA7Y 30

Two Meter EME Primer<\/h3> – Your guide to moonbounce action! …… W5UN 46

Hams in Space!<\/h3> – SAREX II the next generation …… Chien 54

The ICOM IC-970H VHF\/uHF Multiband All-mode Transceiver<\/h3> – A greatrig for both satellite and local communications …… KA7LDN 36

Skymoon<\/h3> – Software for EME communications …… WA3USG 46
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\n

73 Ham Radio Today Issue April 1991<\/a>
<\/h2>\n

Artificial RF Ground<\/h3> – Maximize your antenna’s efficiency …… KB4ZGC 10

The ESV Mod Quad<\/h3> – Inexpensive performer for any band from 50 through 1296 MHz …… WB0ESV 14

Collinear for Two Meters<\/h3> – An inexpensive efficient antenna …… G3YCC 24

Simple SupeRX<\/h3> – A super-small superhet for 80 40 or 30m …… WA6IVC 26

Pocket-portable Seven-band Antenna<\/h3> – It’s cheap easy-to-build and effective …… KB4ZGC 46

Ten for 10<\/h3> – Build a high performance 10 meter beam for $10 …… KM4UL 52

The Happy Half Square<\/h3> – Inexpensive gain in a compact package …… W1XU 22

The Carolina Windom 160<\/h3> – Work 160-10 meters with just one antenna …… WA4BLC 34

Ameritron’s AL-811 Linear Amplifier<\/h3> – Get the real thing at the right price …… WA4BLC 38

SV Products’ WARe Band Yagi<\/h3> – Model 1824\/2-l -a super buy! …… N4IBJ

Practical Antenna Handbook<\/h3> – Useful information for beginners and pros …… W6OAL 21
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73 Ham Radio Today Issue May 1991<\/a>
<\/h2>\n

The Copperhead Keyer Paddle<\/h3> – The perfect touch! …… KI5AZ 9

The Handy Inductance Bridge<\/h3> – For measuring small coils …… KB4ZGC 11

The Mini-keyer<\/h3> – A smaller and newer version of an old friend …… WB9YBM 14

Covert Hamming<\/h3> – A design for your next secret mission …… K6BRP 21

Software for the HamShack Part I<\/h3> – Useful ham calculations you can program yourself! …… WA4BLC 22

Two QRP Transmitters<\/h3> – Dust the ethers and bend the waves! …… KI5AZ 26

A Better Tube Tester<\/h3> – Check more than just DC amplification …… WA1IAO 30

Apartment Antennas: A Challenge<\/h3> – How to cope with a ess-than-ideal QTH …… W1GV 42

The JPS NIR-10<\/h3> – Separate the words from the noise …… WB2QLL 34

The J-com MagicNotch Audio Filter<\/h3> – A little box that locks out lids …… N1GPH 40

The SR3 Simplex Repeater from Brainstorm Engineering<\/h3> – Versatile store-and-forward voice controller …… WA3USG 46
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\n

73 Ham Radio Today Issue June 1991<\/a>
<\/h2>\n

Three Bands With One Rock<\/h3> – Versatile QRP transmitter for 80 40 and 20m …… WW9X 10

Tune in on Philately<\/h3> – Immortalized in stamps …… Schuessler 14

A Pseudo CW Filter<\/h3> – Be good to your ears …… WR5B 18

Build the Brass Pounder’s Keyer<\/h3> – A memory keyer that reproduces your true CW “fist” …… AA6GG 22

SPSM Mobile Mount<\/h3> – Build this reliable Hustler classic …… W6OAL 34

Parts Substitution<\/h3> – A beginner’s guide …… KB1MW\/7 40

Software for the Ham Shack Part II<\/h3> – Useful ham calculations you can program yourself! …… WA4BLC 44

Get on the WARC Bandwagon<\/h3> – You can still enjoy good DXing even as propagation conditions decline …… N4LBJ 50

The KE2AM Voice ID and Repeater Controller<\/h3> – Control your repeater economically! …… WB8ELK 12

Tripp Lite PR-25A and Isobar 8 GS<\/h3> – Power supply and surge suppressor …… N1GPH 38

SWISSLOG Version 3.66<\/h3> – A complete QSO tracking system in one fast software program …… WA3USG 46
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73 Ham Radio Today Issue July 1991<\/a>
<\/h2>\n

Micro ATV Transmitter<\/h3> – Can the Dick Tracy video wristwatch be far away? …… KC6CCC 9

Tropo Time Is Now!<\/h3> – Talk thousands of miles on the VHF\/uHF bands …… WB6NOA 14

Antennas by the Yard<\/h3> – HT antennas that realty measure up! …… WA6TLK 22

The Megaloop<\/h3> – Perfect for megalomaniacs …… W1GV 29

Lightning Protection<\/h3> – Want some peace of mind? …… NU1A 32

The Flight of STS-37<\/h3> – The first “all-ham” crew …… KC4YER 34

Software for the Ham Shack Part III<\/h3> – Useful calculations you can program yourself! …… WA4BLC 42

The VOR-2 Video Operated Relay<\/h3> – Control your ATV repeater with this versatile circuit …… WA3USG 26

SSTV with the Robot 1200C Scan Converter and the Martin Emmerson EPROM Version 4.0<\/h3> – Add exciting new features to the Robot …… WA3USG 46

The ATV-3 Downconverter<\/h3> – Tune in to ATV with this economical kit …… AH2AR\/8 50
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73 Ham Radio Today Issue August 1991<\/a>
<\/h2>\n

Poor Man’s Packet<\/h3> – A complete software TNC for PC compatibles! …… WB2EMS N8KEI 8

Low Cost Discone<\/h3> – Wideband coverage from 144 to 1296 MHz …… AD5X 24

High Speed Data Acquisition<\/h3> – Sample the outside world with this inexpensive interface …… N8KDD 28

Software for the Ham Shack Part IV<\/h3> – Useful ham calculations you can program yourself! …… WA4BLC 32

Universal CAT Interface <\/h3>– Control your rig with your computer! …… K5YEF 38

Hope for Monolingual Hams<\/h3> – If you really want to communicate! …… WA1LBP 50

Pkt-gOLD Multimode<\/h3> – Your software window into the world of digital communications! …… WA1R 20

The TAPR METCON-1 Kit<\/h3> – Add telemetry and control to your packet station …… WB8ELK 34

The Kantronlcs KTU Telemetry Unit with Weathemode EPROM<\/h3> – Remote weather observations via packet! …… WA3USG 46
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73 Ham Radio Today Issue September 1991<\/a>
<\/h2>\n

The Square Pancake Antenna<\/h3> – A 20-inch square marvel! …… W2SMR 18

Indoor 10 Meter Beam<\/h3> – A 2-element “invisible” coaxial antenna …… N9CAP

Economical Mobile HF Antenna<\/h3> – Modify a Radio Shack CB antenna for the HF bands …… AA6NG 26

DXDA Awards and Countries<\/h3> – The latest update thanks to Bob Reed WB2DIN …… Staff 30

Dual-band Vertical<\/h3> – This one’s for the 160 and 1750 meter bands …… WD4PLI 38

The L-o-N-g Long-wire<\/h3> – What is it like to build and worka REAL long-wire? …… W1GV 46

Ham-it-up Sweepstakes Contest Winners!<\/h3> – Here’s the list you’ve been waiting fort …… Staff 52

The Outbacker All-band HF Mobile Antenna<\/h3> – A 12-month road test on a tough mobile antenna from down under …… N1GPH 12

Quantum Ham Battery<\/h3> – Be prepared with full power for your HT …… N1GPH 22

Carolina Beam<\/h3> – An innovative new Windom for 80-10 meter operation! …… WA4BLC 34
\n
\n

73 Ham Radio Today Issue October 1991<\/a>
<\/h2>\n

The Sudden Receiver<\/h3> – A simple-to-build receiver for 160-20M …… G3RJV 8

A 10M Sideband Transmitter<\/h3> – Add voice to your QRP station …… NZ5G 14

Simple Gain Antenna for 903 MHz<\/h3> – Build it for under $25 …… AD5X 27

Microprocessor Repeater Controller Part I<\/h3> – Add versatility to your repeater system …… WB3ESS 28

Low-pass Antenna Tuner<\/h3> – Match your antenna while reducing harmonics with this unique design …… KB4ZGC 46

Kenwood’s TH-77A Dual-band Walkie<\/h3> – Super-packed with features! …… KB1UM 42

The Drake R8 Receiver<\/h3> – Tune in the world with this hot new receiver …… WA4BLC 50
\n
\n

73 Ham Radio Today Issue November 1991<\/a>
<\/h2>\n

Voice ID on a Chip<\/h3> – Throw your voice with this versatile Circuit …… WB8ELK 11

Portable Frequency Counters<\/h3> – Versatile test equipment that you can really count on …… WB6NOA 15

Half-wave Gain Antenna<\/h3> – For 450 MHz handie talkies …… AD5X 26

The Heli-hat Antenna<\/h3> – An 18-inch wonder for 10-17 meters …… KB4ZGC 32

Showdown in Portland<\/h3> – Discover the thrill of radiosporting …… K0OV 38

Microprocessor Repeater Controller Part II<\/h3> – This month the audio board …… WB3ESS 44

A Simple 10-meter Sideband Amplifier<\/h3> – Give your QRP rig a boost …… NZ5G 52

The Kenwood TS-850S<\/h3> – A versatile HF transceiver with a digital difference …… N2GE 18

The Startek International Model 3500 Frequency Counter<\/h3> – Speed accuracy and ease in a shirt-pocket unit …… WB9RRT 30

The Solarcon A-99 Antenna<\/h3> – A very economical vertical for 10-17 meters! …… WA4BLC 36
\n
\n

73 Ham Radio Today Issue December 1991<\/a>
<\/h2>\n

The Simple TX TX<\/h3> – The perfect companion for the SupeRX receiver! …… WA6IVC 10

Project INSPIRE: A Space Shuttle Experiment<\/h3> – Build a simple receiver to explore the wonders of the 60 000 meter band! …… KG6EK 22

The QUAG-v<\/h3> – A high performance and wide bandwidth antenna for VHF and UHF …… WB3AYW 36

Computerized Tuning for Ramsey Receiver Kits<\/h3> – It doesn’t have to be expensive …… N8KDD 42

Not Just Another Island<\/h3> – Weekend DXpedition activates the Walrus Islands …… NL7KH 50

The “Cheap and Simple” Power Supply Revisited<\/h3> – Improved regulation for a classic power supply …… WA9VLK\/g0NBZ 66

The Ramsey 2 Meter Transceiver Kit<\/h3> – Build your own high-quallty FM rig the easy way …… K1BQT 18

The BayCom Packet System<\/h3> – Run packet without a TNC …… WA3USG 20

ZD Engineering Hardline Matching Transformers<\/h3> – A great way to use all of that cheap CATV cable! …… WB9RRT 29

The Yaesu FT-990<\/h3> – A fully-equipped transceiver for the everyday ham …… WA4BLC 32

ICOM IC-2SRA 2 Meter HT and Scanner<\/h3> – A full-feature 2 meter handheld with a separate wideband receiver …… WB6NOA 46
\n
\n

73 Ham Radio Today Issue January 1992<\/a>
<\/h2>\n

The Dual-combo Field-strength and Source Dip Meter<\/h3> – Versatile test instruments for all your RF projects …… WB0ESV 8

Safety Power Breaker for the Test Bench<\/h3> – Avoid a shocking experience …… WA1FHB 18

An Improved Crystal Tester<\/h3> – Check out those surplus crystals with this portable circuit …… KA4J 22

Build a Function Generator<\/h3> – An inexpensive way to generate useful waveforms …… KB4ZGC 28

One Desert Storm MARS Experience<\/h3> – MARS readiness and support needed! …… NX7T 34

A Direct-reading Linear Inductance Meter<\/h3> – Check out your coils with a digital voltmeter …… W8VWX 38

Use Those Surplus Meters<\/h3> – Find out what’s inside that meter and how it can be used …… KB4ZGC 42

The 200-channel Standard C168A Handheld<\/h3> – Lot’s of options in a small small package …… WB6NOA 24

The Ventenna<\/h3> – The “no antennas” antenna …… N1GPH 32

Secrets of RF Circuit Design<\/h3> – A new reference book from a well known author …… N3GDE 23
\n
\n

73 Ham Radio Today Issue February 1992<\/a>
<\/h2>\n

The Copper Cactus J-pole<\/h3> – For 2m and 70cm …… KE7AX 9

A Five-component Wideband Amplifier for Your Receiver<\/h3> – Give your VHF receiver a boost! …… K9EYY 12

An NE-602 RF Signal Generator<\/h3> – Useful test equipment from a versatile IC …… Kerr 22

Colombian Expedition<\/h3> – Adventure in the Andes …… KC4VLN 34

PVC Cubical Quad for 10 Meter<\/h3> -build this $30 plumber’s special! …… KG5BI 38

VBI-360 Beam Indicator<\/h3> – Put your color display on the wall …… WA3USG 15

The AL800 High Gain HT Antenna<\/h3> – Improve your dual-band portable punch …… N1GPH 20

The Radio Shack HTX-202 2 Meter FM Transceiver<\/h3> – This full-featured HT is ideal for beginners as well as for experienced hams …… WB6NOA 28
\n
\n

73 Ham Radio Today Issue March 1992<\/a>
<\/h2>\n

Build a GaAsFET Preamp Sequencer<\/h3> – Mast-mount your preamp for maximum performance …… WZ1V 8

Simple Pulsed Crystal Signal Source<\/h3> – Find the right frequency …… KA1MJP 14

An ATV Downconverter with a Difference<\/h3> – Keep FM voice repeaters out of your picture …… W9NTP 22

Using RS-12<\/h3> – Work the world with this unique satellite …… G3IOR 32

40\/80 Meter Wave Ryder<\/h3> – A QRP tube transmitter powered by 12 volts DC …… KI5AZ 40

A Remote Field Strength Meter<\/h3> – An accurate system for measuring radiated power …… W2IMB 44

The Lappack<\/h3> – Extended portable power for your laptop computer …… W5VBO 52

DigiMax D1200 Frequency Counter<\/h3> – Great performance at a budget price …… KA1MDA 18

The JPS NF-60 DSP Notch Filter<\/h3> – Get rid of multiple carriers with the push of a button …… WA4BLC 36
\n
\n

73 Ham Radio Today Issue April 1992<\/a>
<\/h2>\n

The Arrow Antenna<\/h3> – Hit the bull’s-eye with this portable VHF sharp shooter …… KA0VFF\/n0IMW 10

The Plumber’s Delight<\/h3> – A new look for the J-pole! …… KB6EPO 16

The Flower Pot Special<\/h3> – Plant your antenna! …… N1GPH 18

The Rock Bender QRP Transmitter<\/h3> – Win QSOs and influence crystals …… WI5W 22

Monoband Yagi for 20 Meters<\/h3> – More dBs for the buck …… AB4GX 30

The SAM1 Transverter<\/h3> – For the challenge of LF\/vLF …… WD4PLI 36

Heil HM-10 Dual and BM-10 Boomset Microphones<\/h3> – Experience the world of hi-fi audio …… N1GPH 28

The EASY-pC PCB Layout Program<\/h3> – An easy way to produce camera ready PC board artwork …… WB6P 48

The AOR AR3000 Communications Receiver<\/h3> – Continuous coverage from 100 kHz to 2036 MHz in a three-pound package …… N3BAH 58
\n
\n

73 Ham Radio Today Issue May 1992<\/a>
<\/h2>\n

Poor Ham’s Dynamic Component Analyzer<\/h3> – Build your own Circuit detective …… KA1MDA 8

Log Periodic Dipole Array for 2 Meters<\/h3> – Wideband performance in a small package …… N2KLK 14

QRP Sidetone Companion<\/h3> – And part-time code practice oscillator …… KI5AZ 18

The Copperback Beetle<\/h3> – A new type of “bug” …… KI5AZ 20

Battery Watchdog<\/h3> – Keeps your battery up to snuff …… WB0TCZ\/7 26

Control Your Station by Computer<\/h3> – Hardware and software interfaces for Kenwood rigs …… WK2S 30

DXpedition Lessons from Peter I and Bouvet Islands<\/h3> – Helpful hints for your next exotic radio operation …… AJ0N\/lA6US 46

The MFJ-247 Antenna Analyzer<\/h3> – SWR analyzer with a built-in frequency counter …… WA4BLC 25

LOGic Jr. and LOGic II vers. 2.1 Ham Logging Software<\/h3> – Discover the versatility of a computerized logbook …… WA3USG 38

The Daiwa PS-304<\/h3> – A regulated power supply …… N1GPH 42

The Yaesu FT-26 2 Meter Walkie<\/h3> – Simplicity redefined …… KB1UM 50
\n
\n

73 Ham Radio Today Issue June 1992<\/a>
<\/h2>\n

8 000 Channels for the Ramsey FX-146<\/h3> – Add direct frequency input to this popular 2 meter transceiver …… KG7BK 10

VE3CYC’s Wire Beam<\/h3> – Versatile gain antenna for a limited space …… VE3CYC 16

Touch-tone Squelch<\/h3> – Remote speaker control with a DTMF decoder …… VE3RGW 20

Build Your Own 20 Meter Transceiver<\/h3> – Work the world with this easy-to-build rig …… WB6NKJ 26

The j-com Ventriloquist<\/h3> – Throw your voice with the push of a button …… WB8ELK 40

The Heights Tower Systems Aluminum Tower<\/h3> – Hang your aluminum on some aluminum …… W8CM 42

ELNEC Version 2.2<\/h3> – An updated version of the antenna modeling program …… WA4BLC 48
\n
\n

73 Ham Radio Today Issue July 1992<\/a>
<\/h2>\n

An Indoor or Window-mounted Vertical Dipole<\/h3> – A floor-to-ceiling antenna for 10-20m …… W3JIP 8

Six-band Linear Trap Antenna<\/h3> – Multi-band operation without coils or capacitors …… KB4ZGC 14

10 Meter DSB Transmitter<\/h3> – Easy to build and no tuning required …… WA4ADG 18

Calibrated Signal Generator<\/h3> – An accurate RF source from 400 kHz to 33 MHz at the twist of a dial …… N2DCH 26

A Receive Converter Adapter for 2 Meter Transceivers<\/h3> – Monitor 6 meters or 220 MHz with this unique circuit …… W3RW 32

An Eight Channel A-to-d Converter for Your Computer<\/h3> – Sample the analog world with this easy interface …… N8KDD 40

Protected AC Outlet for the Workbench<\/h3> – Avoid a shocking experience …… N4TMI 50

The MFJ-9020 20 Meter CW Transceiver and Integrated CW Station<\/h3> – A versatile and portable QRP combo …… WB8VGE 36

The Yaesu FT-415 Handheld<\/h3> – A full featured 2m mini-hT …… KB1UM 46
\n
\n

73 Ham Radio Today Issue August 1992<\/a>
<\/h2>\n

The ViewPort VGA Color SSTV System<\/h3> – At last- a versatile slow-scan TV program and interface for the IBM PC …… KA2PYJ 8

The Compact-a-loop Antenna<\/h3> – 80 meters for the apartment dweller …… G2BZQ 18

ATV Transmitter Part I<\/h3> – Get on ATV easily and cheaply …… K2MQJ KA2CWL 22

The Explorer<\/h3> – HF receiver for 40 and 80 meters …… K5WMS 30

Digital ALC<\/h3> – A simple way to get the best out of any transmitter ……N7APE 36

A Frequency Counter Upgrade<\/h3> – Accuracy at the flip of a switch …… KD9ZT 48

AEA’s Weather FAX Decoder<\/h3> – HF FAX on an IBM PC …… N7IDB 42

The Larsen KG 2\/70 Glass-mounted Antenna<\/h3> – Glass-mounted dual-band …… N1GPH 46
\n
\n

73 Ham Radio Today Issue September 1992<\/a>
<\/h2>\n

The Raser<\/h3> – A novel wire antenna system …… W2OZH 8

My Longwire Antenna<\/h3> – Cheap no-fuss and it’s got gain! …… NH6XK 18

Wideband RF Baluns<\/h3> – A practical guide to the perfect match …… K8IHQ 20

NiCd Restorer\/charger<\/h3> – Don’t throw old NiCds away! …… N7APE 24

High Performance 2 Meter Yagi<\/h3> – Improve your signal with this compact design …… W3HMI 30

Common Audio and Speaker Bus<\/h3> – Control noise pollution chaos …… W6WTU 36

ATV Transmitter Part II<\/h3> – Get on ATV easily and quickly …… KA2CWL K2MQJ 50

A Simple Rooftop Vertical<\/h3> – An inexpensive and easy-to-build 40 to 10 meter antennas …… N0LRF 60

The Comet CX-224 Tri-band Mobile Antenna<\/h3> – Operate 144 222 and 440 MHz with one antenna …… WB6IGP 26

The MAX System 5-element Quad<\/h3> – Easy to assemble and very portable …… WB6NOA 41

The “Super Guy” Tower Guy<\/h3> – A simple method for lower support …… W3BMW 58
\n
\n

73 Ham Radio Today Issue October 1992<\/a>
<\/h2>\n

Packet on the Mac<\/h3> – Connect with the world without a TNC …… KD6CMT 8

A 2 Meter FET Amplifier for Your Handheld<\/h3> – Build this simple inexpensive amplifier …… AA4AW 20

A New Look at Loop Antennas<\/h3> – Adding regeneration to ferrite-core and open-wire box loops …… W2IMB 28

Baby Loopy<\/h3> – A half-wave inductively-loaded loop …… NH6XK 34

Noise Reduction Using Broadband Active Whip Antennas<\/h3> – Clear reception for the VLF\/lF bands …… WD4PLI\/6 38

Packet Radio and Emergency Communications<\/h3> – Public safety enters the digital world …… KA0DXM 42

The AEA IsoLoop 10-30<\/h3> – A big antenna in a small package …… N1EWO 16

The DAIWA DP-830 Digital SWR and Power Meter<\/h3> – Simultaneously measure power and SWR from 1.8 to 525 MHz …… WB9RRT 26

The Kantronics KPC-3<\/h3> – Full-featured packet in a compact package …… WB9EGA 30
\n
\n

73 Ham Radio Today Issue November 1992<\/a>
<\/h2>\n

The QRP 80\/40 CW Sender<\/h3> – QRP power and QRP cost …… G2BZQ 8

The Noise Remover<\/h3> – A simple effective way to get rid of the static …… K8MKB 12

An All-band HF Mobile Antenna<\/h3> – Efficient and inexpensive …… KC4TMT 18

Spread Spectrum Primer<\/h3> – What is spread spectrum anyway? …… KC6YJY 29

The JRL-2000 HF MOSFET Linear Amplifier<\/h3> – A solid-state no-tune kilowatt with very advanced features …… WA4BLC 26

The FS 73 Signal Cube Digital Field Strength Meter<\/h3> – Measure both absolute and relative field strengths …… WB9RRT 42
\n
\n

73 Ham Radio Today Issue December 1992<\/a>
<\/h2>\n

The Techno-whizzy 1 Part I<\/h3> – Build a direct digital synthesis (DDS) radio …… N9JZW 8

The Key to Unlocking the HTX-100<\/h3> – Improved RIT control …… AC3L 20

Is 2 Meters Hazardous to Your Health?<\/h3> – How to calculate safety …… N1II 28

Build a LiTZ Decoder<\/h3> – Touch-tone control your speaker for emergency alerts …… KA5RZI N7IOB 30

Iambic Keyer Paddles<\/h3> – A wide array of choices …… N6HI 36

The Beach Brawley Boomer<\/h3> – QSOs made in the shade …… NH6XK 48

An Expanded-scale Voltmeter<\/h3> – For accurate battery monitoring …… KJ4W 60

The ICOM IC-728<\/h3> – Top-of-the-line performance in an inexpensive package …… WA4BLC 22

The Micro-mag Mobile Antenna<\/h3> – Compact VHF and UHF antennas for the ham on the go! …… AH2AR\/8 26

The Tigertronics BP-1 Packet Modem<\/h3> – Just add one computer for instant packet …… WB8ELK 52
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\n

73 Ham Radio Today Issue January 1993<\/a>
<\/h2>\n

The Techno-whizzy 1 Part II<\/h3> – Build a direct digital synthesis (DDS) transmitter …… N9JZW 10

Programmable-frequency Audio Generator<\/h3> – High accuracy with digital control …… Redman 16

The SP-1 Transceiver<\/h3> – Build the HF “Spider” …… WA8TXT 24

Twin Crystal Ladder Filters<\/h3> – Upper or lower sideband filters using inexpensive crystals …… N2DCH 32

Handi-beacon<\/h3> – Turn your tape recorder into a beacon controller …… WB9YBM 38

The Down East Microwave OEM 432K<\/h3> – Put your HF rig on the 70cm band with this easy-to-build linear transverter kit …… KT2B 36

The SR4 Multimode Simplex Repeater<\/h3> – The next generation of store-and-forward voice controllers …… WA3USG
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\n

73 Ham Radio Today Issue February 1993<\/a>
<\/h2>\n

Fun at 10 000 MHz<\/h3> – Explore the wide open spaces of the 10 GHz microwave band …… WB6NOA 10

The 23-foot Indoor Antenna<\/h3> – Make an effective 20 and 80 meter apartment-owner antenna …… G2BZQ 16

Accurate Low Cost VSWR Meter<\/h3> – Convert this CB accessory for 1.8-450 MHz operation …… AD5X 18

An Effective 160 Meter Antenna<\/h3> – How to build one on a small residential lot …… KA6MMQ 20

The “Simplest Transverter”<\/h3> – Check out the 6 meter band with this Inexpensive 2 meter interface …… W3RW 26

Build the Tone Processor<\/h3> – Eliminate interfering signals with this versatile switched capacitor audio filter …… JAlAYO 30

The Down East Microwave WSSK<\/h3> – Microwave weak signal source kits …… KT2B 34

The GAP Voyager DX-iV Vertical<\/h3> – Operate 160 through 20 meters with this high performance antenna …… AG8L 42
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\n

73 Ham Radio Today Issue March 1993<\/a>
<\/h2>\n

Constructing High Current Power Supplies<\/h3> – Practical considerations learned through experience …… KE9ED 10

Fiber Optics and Amateur Radio<\/h3> – Is fiber-optic technology in our future? …… AJ0N\/lA6US 14

Digital Satellite Gateway Nodes<\/h3> – How to get on OSCAR 22 with an HT …… WA0PTV 19

Clock It Quick<\/h3> – Tame ripple counter chips …… Arnoid 22

Dual Half-wave Antenna<\/h3> – A ground independent antenna with gain …… KE2QJ 26

Active Antenna Using a MOSFET<\/h3> – Build a low noise antenna …… W2IMB 32

Computer Control for the Ramsey FTR-146<\/h3> – Build a computer interface for this 2 meter transceiver kit …… WD8BNR 60

The AEA DSP-2232<\/h3> – A digital signal processing filter …… N1EWO 17
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73 Ham Radio Today Issue April 1993<\/a>
<\/h2>\n

Mini-quad Loops<\/h3> – Three-fifths-size loops with full-size performance …… NH6XK 10

Copper Dual-band Super J-pole Antenna<\/h3> – Build it in less than an hour …… KA0NAN 12

HR2510 Hi-power Modrtication<\/h3> – Increase the performance of this popular HF rig …… Merrill 17

10 Meter X-beam<\/h3> – Upgrade your antenna as well as your license …… N5SJZ 18

Lightweight Collapsible Quad for 2 Meters<\/h3> – Excellent performance in a small package …… AA1EX 26

Want a Dish?<\/h3> – Building your own is easier than you think …… WA8WBP 30

The Ultratorch<\/h3> – A tool for liberation …… N4RVE 24

The j-com Zetel SDP-600 Smart Patch<\/h3> – Autopatch at a reasonable price …… WB9RRT 36
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73 Ham Radio Today Issue May 1993<\/a>
<\/h2>\n

The Hows and Whys of Coaxial Cable<\/h3> – How to select the most appropriate kind for your need …… WB2WIK\/6 10

An Almost Everything Amplifier<\/h3> – Change from 7 MHz to 225 MHz with no bandswitching or tuning! …… AA4AW 20

An Experimenter’s Power Supply<\/h3> – An adaptable multi-voltage supply …… KF9GX Reimers 30

Electronic Project Panel Labels<\/h3> – Let your computer help …… K4GOK 44

A Versatile NiCd Charger<\/h3> – Simple to build with off-the-shelf parts …… W4JC 68

The ICOM IC-w2A Dual-band Handheld<\/h3> – Two radios in one! …… KA1MDA 36
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73 Ham Radio Today Issue June 1993<\/a>
<\/h2>\n

The Ubiquitous Coaxial Connector<\/h3> – Wire up these common connectors the easy way …… WB2WIK\/6 10

Portable Packet Digipeater for Emergency Service<\/h3> – Put together this compact system before disaster strikes …… K6YDW 16

16 Tips for Using PCB Layout Software<\/h3> – You can do things differently when you design a PCB on your computer …… N8PTG 28

Building and Using N7APE’s NiCd zapper<\/h3> – An update …… K4GOK 34

Backup Battery Monitor\/charger\/alarm<\/h3> – Be prepared for emergencies …… KB4ZGC 40

HF\/vHF Digital MFJ SWR Analyzer<\/h3> – MFJ’s latest version of this helpful antenna tool …… WA4BLC 46

US Digital Company’s DVR 501A Simplex Repeater System<\/h3> – A low-cost simplex repeater …… N1GPH 48
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73 Ham Radio Today Issue July 1993<\/a>
<\/h2>\n

Type “N” RF Connectors<\/h3> – How to install and use them …… WB2WIK\/6 10

Mobile CW Operation<\/h3> – Ham radio’s oldest mode keeps rolling …… WB2WIK\/m6 16

A Tilt-over\/swivel Antenna Mount for Recreation Vehicles<\/h3> – Take your fun-size vertical on the road …… W4PVI 28

Expanded Range Direct-reading Inductance Meter<\/h3> – Build this cheap choke checker …… W8VWX 34

Deluxe Function Generator<\/h3> – This simple project has many uses …… KC3ZQ 38

A Universal Speech Processor<\/h3> – An easy upgrade for your transceiver …… K9EUI 40

Stacking UHF Antennas<\/h3> – Get gain with less pain …… WB4HFN 43

Nine to 10<\/h3> – What to do when 10 meters is closed …… N1II 53

The AEA HamLink Model HL-60<\/h3> – Does your radio miss you when you’re not home? …… WA6TWF 20

The Hewlett Packard HP 34401 A Digital Multimeter<\/h3> – Add a top quality test instrument to your workbench …… WB8VGE 24
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73 Ham Radio Today Issue August 1993<\/a>
<\/h2>\n

A Decade of Packet<\/h3> – An anthology of 73 packet radio articles from 1983 to 1993 …… WA1RZW 10

FM Packet Deviation Meter<\/h3> – Put your packet station on the money for 20 bucks …… N5OWK 22

Julieboard<\/h3> – An easy-to-build DDS synthesizer for the PC printer port …… VE3JIL 40

Computer Control for Beam Antennas Part I<\/h3> – Give your station a smart new twist …… K4OND 54

PC Pakratt for Windows<\/h3> – Love at first byte …… N1EWO 28

The STARTEK ATH-15 Portable Frequency Counter<\/h3> – Make your life easier …… WB9RRT 34

The AEA PK-900<\/h3> – State-of-the-art digital ham radio …… N1EWO 36
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\n

73 Ham Radio Today Issue September 1993<\/a>
<\/h2>\n

Computer Control for Beam Antennas Part II<\/h3> – Give your station a smart new twist …… K4OND 10

The W2EKY “Icky-stick” Antenna<\/h3> – Hit the roof with an improved ground-plane vertical …… W2EKY 18

Compressing the W3EDP<\/h3> – Build this unique multiband restricted space antenna …… G2BZQ 20

Distributed Capacity Twisted Loop<\/h3> – An indoor 40 meter antenna for five bucks …… WA6QBU 26

Evolution of an Antenna<\/h3> – Build a new version of the classic “Lazy H” antenna …… W2TBZ 28

Add Remote-base Capability to ANY Repeater!<\/h3> – Bargain bells ‘n’ whistles …… WB9YBM 30

DSP: The Whole Truth<\/h3> – Everything you ever wanted to know about digital signal processing …… N9RF 32

Recycled TV Beam to 2 Meters for $2<\/h3> – Use an old TV antenna for this inexpensive two-hour project …… KA0NAN 34

A Discone Just For Fun<\/h3> – Fun to design build and use …… KA0DAQ 38

DIGI-fIELD Field Strength Meter<\/h3> – A new entry at a reasonable price …… WB9RRT 42
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73 Ham Radio Today Issue October 1993<\/a>
<\/h2>\n

More Gadgets for Your MFJ-9020<\/h3> – Add features to this great QRP rig …… W6YBT 10

Universal Automatic Minimum Power Control for AMTOR<\/h3> – Use just enough punch to get the job done …… N7APE 14

The Challenge of QRP<\/h3> – An introduction to low power operation …… WB8VGE 18

The RASER Revisited<\/h3> – How this superior HF dipole antenna can be improved …… W2OZH 29

A New Look at a Simple VFO\/exciter<\/h3> – Stable tuning with minimal parts …… W2IMB 35

73’s DX Dynasty Award<\/h3> – Update to 73 ‘s only awards program …… Staff 68

The Backpacker II<\/h3> – 40 meter transceiver …… WB8VGE 26

The MFJ-451 Morse Keyboard<\/h3> – A perfect fist right out of the box …… WB2WIK\/6 32

The ARK 40 QRP Transceiver<\/h3> – Enjoy synthesized tuning in a low-cost monoband rig …… WB8VGE 38
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73 Ham Radio Today Issue November 1993<\/a>
<\/h2>\n

The FARA Project<\/h3> – An economical easy-to-build 25 watt 2 meter amplifier …… A1GPO 10

Improved VOX Mobile Extender<\/h3> – Give your handheld the power of a mobile …… K6YDW 20

The Solar Control-ar<\/h3> – A solar panel charge controller for all seasons …… WB5PPV 26

Ramsey Electronics FX-146 Transceiver Kit<\/h3> – Roll your own 2 meter rig …… KT2B 39

Azden AZ-61 6m FM Transceiver<\/h3> – Advanced features in the palm of your hand …… WB6NOA 42
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73 Ham Radio Today Issue December 1993<\/a>
<\/h2>\n

Deluxe Communications Audio Board<\/h3> – Enhance your audio with this practical add-on …… WD4PLI 10

Resolving 2 Meter\/cable TV Interference<\/h3> – A winning strategy for keeping the peace and staying on the air! …… NM8R 18

Five-element T-match VHF Yagi<\/h3> – Excellent performance characteristics on 2 meters …… KA0NAN 28

Remote Tuned Active Antenna<\/h3> – Tune this easy amplified antenna without leaving your chair …… W2IMB 32

Melt Your Way to Better Breadboards<\/h3> – Discover the Macro Surface-mount breadboard method …… N1JIJ 38

Maxi-loop 80<\/h3> – Here’s a tried-and-true indoor favorite you can build …… G2BZQ 42

The HANDI-finder<\/h3> – Build this versatile accurate DFer semi kit in an evening …… W6KOW 26

Midland 73-005 Transceiver<\/h3> – A full-featured HT at an entry-revel price …… WA1RZW 34
\n
\n

73 Ham Radio Today Issue January 1994<\/a>
<\/h2>\n

Using the World’s Most Accurate Frequency Standard Part 1<\/h3> – Building a receiver for WWVB …… K9EUI 10

Micro IDer<\/h3> – An easy-to-build automatic Morse code station identifier …… KA9SZW Pointer 18

The “Hula Loop”<\/h3> – A stationary bidirectional hybrid three-element delta loop …… NH6XK 30

The Quad Charger<\/h3> – A constant current NiCd charger …… K4GOK 34

EASY-pC Printed Circuit Layout Software<\/h3> – Want to get into computer-aided design (CAD)? …… K4IPV 42

“The Radio Doctor”<\/h3> – “Fix it and run it” videos …… WB6NOA 48
\n
\n

73 Ham Radio Today Issue February 1994<\/a>
<\/h2>\n

VHF Meteor Scatter Propagation<\/h3> – Bounce your signal beyond the horizon …… WB2WIK\/6 10

Using the World’s Most Accurate Frequency Standard Part 2<\/h3> – Building a digital phase comparator …… K9EUI 18

Computer Control for Your Direct Digital Synthesis (DDS) VFO<\/h3> – Free yourself of the hassles of generating an accurate and stable sinusoidal signal-and more! …… VE1ABC 26

ASCII-to-morse-code Interface<\/h3> – Let your keyboard do the work …… KD1JV 36

Standardize Your Microphone Connectors<\/h3> – A one-plug-fits-all solution you can easily build …… WB9YBM 44

Folding Three-element 2 Meter Quad<\/h3> – Finds fox folds fits in trunk …… WX8G 46

The Kenwood TH-28A<\/h3> – 2 meter hand-held transceiver …… WB2WIK\/6 52

The XPERTEK DVMS\/1+<\/h3> – Digital voice mail system for repeaters …… WA4TEM 56
\n
\n

73 Ham Radio Today Issue March 1994<\/a>
<\/h2>\n

Getting Started With Satellite Imagery<\/h3> – Enjoy a bird’s-eye view using your PC and VHF rig …… KO4BD 10

Using the World’s Most Accurate Frequency Standard Part 3<\/h3> – Building a good secondary frequency standard …… K9EUI 18

The TW-1 Cheap Dig ital Front Panel<\/h3> – Easy thumbwheel tuning for the Techno-whizzy 1 …… N9JZW 26

The FOXBOX<\/h3> – A voice ID T-hunt controller …… KI5GH 42

The Commercial General Radiotelephone Operator License<\/h3> – Pass that test! …… WB6NOA 52

The CS-800<\/h3> – Connect System Inc.’s Full Duplex Interconnect …… N3KHM 34

The Ten-tee Scout<\/h3> – Easy affordable and best of all fun! …… WB8VGE 36
\n
\n

73 Ham Radio Today Issue April 1994<\/a>
<\/h2>\n

Motorcycle Mobile!<\/h3> – Take ham radio two-wheeling …… KC6QJB 10

The 40 Meter Full-wave Horizontal Loop<\/h3> – Take your signal to the treetops …… NH6XK 14

The Big Kahuna<\/h3> – A 15′ high 160 meter Distributed Capacity Twisted Loop Antenna …… WA6QBU 20

A Sensitive Bandspread SWL Receiver<\/h3> – Aaah the nostalgic smell of dust burning off tubes! …… XE2\/kB6EPO 32

A 2 Meter Half-kilowatt for $1 per Watt<\/h3> – Build this VHF amp using vacuum-tube technology! …… WB2WIK\/6 40

Using International 9096-iIA<\/h3> – Xtra-flex low-loss coaxial cable …… WB2WIK\/6 48

The Lightning Bolt Quad<\/h3> – An HF five-band two-element cubical quad antenna …… AC4HF 25

The Diamond X2200A<\/h3> – A high-gain UHF\/vHF omnidirectional base station antenna …… WB2WIK\/6 28

Quickyagi Antenna Design Program<\/h3> – Designing a yagi has never been so easy! …… WB9RRT 30
\n
\n

73 Ham Radio Today Issue May 1994<\/a>
<\/h2>\n

HI-pER Audio Filter<\/h3> – This project provides High-pERformance CW filtering …… KC3ZQ 10

Speech Compression<\/h3> – Make a monster mike! …… KB1UM 16

Fast Charger<\/h3> – Recharge NiCd and NiMH batteries in as little as 30 minutes …… KN6PK 22

The Radar Gun Reality<\/h3> – Ham scientist testifies on electromagnetic radiation …… K6UI 30

Improved QRP Keying Circuit<\/h3> – A slick fix for your little CW rig …… KD1JV 58

The ICOM IC-2iA Micro HT<\/h3> – Meet the evershrinking HT …… KB1UM 40

The Power Station<\/h3> – A multi-function portable rechargeable power source …… WA1RZW 57

The ICOM IC-737 HF All-band Transceiver<\/h3> – A first-class rig with all the right features …… 44
\n
\n

73 Ham Radio Today Issue June 1994<\/a>
<\/h2>\n

MRP4 Solar Panel Control Circuit<\/h3> – Build this easy charge controller for your sun-powered station! …… WB8VGE 10

Surplus Solar: Is It for You?<\/h3> – An affordable alternate backup power system …… N7MGT 18

Used Batteries for Ham Stations<\/h3> – Another way to save money on power systems …… N7MGT 22

All About Those Lightweight HF Ham Whips<\/h3> – Easy mobile operating from 160 to 10 …… WB6NOA 28

Mobile-oN Alarm Timer<\/h3> – This little circuit could save your car’s battery …… KA8PHO 32

The Morse Messenger<\/h3> – A tiny inexpensive CW IDer for foxhunters balloonists and tightfisted hams …… KF7VS 46

Midland Corporation’s Models 18-300 18-325 and 18-330B Mobile Antennas<\/h3> – Sturdy whips for VHF and UHF operation …… KT2B 36

The Rayovac Renewal Battery<\/h3> – A ham’s dream cell …… N7MGT 40
\n
\n

73 Ham Radio Today Issue July 1994<\/a>
<\/h2>\n

The Global Positioning System<\/h3> – An overview …… WA4BLC 10

World ‘s Smallest 10 GHz ATV Transmitter<\/h3> – Build one on a PCB using only a few components …… HB9SLV HB9RKR 16

EMI\/rFI Defense Strategies for Hams<\/h3> – Keep those troublemaking signals out of your mobile installation …… N7MGT 24

A Delayed Video Trigger for Your Oscilloscope<\/h3> – Convert your surplus scope …… KC3XM 38

Muttiband Half-wave Delta Loop (MHDL)<\/h3> – A simple 20-10 meter antenna with an SO-39 meter bonus …… WA6QBU 42

The Improved Resonant Feedline Dipole<\/h3> – A compact low impedance end-fed HF antenna that needs no tuner …… W2OZH 44

S & S Engineering’s Frequency Counter Kit<\/h3> – Now you can count frequencies ’til your heart’s content …… WB8VGE 30

The LDG Electronics FC-1<\/h3> – A small flexible fox controller and CW IDer …… K4CHE 34
\n
\n

73 Ham Radio Today Issue August 1994<\/a>
<\/h2>\n

Stand-alone DDS<\/h3> – The Kendraboard provides PC-free frequency control…… VA3BH 10

A Novel Dual-band Single Feedline VHF\/uHF Antenna<\/h3> – Good performance for less than a sawbuck …… W7KOH 26

Design and Build a Dummy Antenna<\/h3> – A 40W 50 ohm AF dummy load with a VSWR 1.3:1 at 500 MHz …… VE5ZE 30

The Coleman (Mini)-kilowatt<\/h3> – Extend your station’s working range for next to nothing …… WB2WIK\/6 53

Mini-joystick Scanning<\/h3> – Shift your tuning into high gear! …… WB2WPM 65

The Azden PCS-7500H 6 Meter FM Transceiver<\/h3> – 50 watts on 6 in an attractive Iow-cost mobile …… WB2WIK\/6 22

The Drake SW8 World Band Shortwave Receiver<\/h3> – A constant companion at home or on the got …… WA4BLC 38

JPS Communications’ NRF-7<\/h3> – Clean up your audio with state-of-the-art DSP …… WB8RRT 42
\n
\n

73 Ham Radio Today Issue September 1994<\/a>
<\/h2>\n

Compact 160 Meter Transmitting Loop Antenna<\/h3> – You don’t need to move to a new QTH! …… G2BZQ 10

The Discriminator<\/h3> – A directional receiving antenna for hams and SWLs …… G2BZO 16

Low-cost Transmission Lines<\/h3> – What you don’t know can cost you …… K5DKZ 22

The Challenge of 1750 Meters<\/h3> – No license required …… WD4PLI\/6 36

The HOFI Antenna Switch<\/h3> – Quality at every turn …… WA4BLC 24

Computer Automation Technology’s CAT 1000 and CAT 300 Repeater Controllers<\/h3> – An outstanding value in a crowded marketplace …… K1ZJH 26

The Yaesu FT-11R Miniature<\/h3> – Tiny gets terrific …… KB1UM 32
\n
\n

73 Ham Radio Today Issue October 1994<\/a>
<\/h2>\n

Battle of the Monobanders<\/h3> – Iron Mike slugs it out in the CAP arena …… WB8VGE 10

The Traveler<\/h3> – A sweet home-brew receiver for 80! …… K5WMS 14

Handy Randy<\/h3> – The tiny tag-along almost random wire tuner for QRP …… W3RDF 34

Build the Quickie Cheapie Tener<\/h3> – Perhaps the easiest way to get a 1 watt CW rig for the 10 meter band …… Veronese 36

The Capacity Tuned Folded Loop<\/h3> – A 1\/3-wave 7-foot 20 meter antenna …… WA6QBU 38

Video-charge Your HT!<\/h3> – An easy way 10 quick-charge your handie-talkie with your video charger …… KB1UM 42

The A&A Engineering 20 Meter QRP Rig<\/h3> – Easy to build and simple to operate …… WB8VGE 24

The MFJ-9420 20 Meter QRP Rig<\/h3> – MFJ’s new QRP SSB station for 20 meters …… K1ZJH 28

The TechSonlc Milliwatter<\/h3> – It’s easier 10 build your own QRP transmitter! …… WB8VGE 30
\n
\n

73 Ham Radio Today Issue November 1994<\/a>
<\/h2>\n

An Average and Peak Reading RF Power Meter<\/h3> – Add this handy monitor to your operating table …… K4GOK 10

440-450 MHz Omnidirectional Antenna<\/h3> – Build this UHF base or repeater antenna for less than 10 bucks! …… KA0NAN 22

Adapting Bell 202 Telephone Modems for Packet<\/h3> – Enjoy packet radio with this bargain basement project! …… KI5PG 42

The Kenwood TS-60S<\/h3> – 50 MHz all-mode transceiver …… WB2WIK\/6 14

The Alinco DJ-g1T Handheld<\/h3> – An HT with a built-in spectrum analyzer! …… WB6NOA 28

The MXM Simple Transceiver<\/h3> – An easy-to-build single-band CW QRP kit …… AC4HF 32

The MFJ-1786 Super HI-q Loop<\/h3> – A compact multiband HF antenna …… AC4HF 36

The Isotron 40<\/h3> – A compact horizontally-polarized 40 meter antenna …… AH2AR\/5
\n
\n

73 Ham Radio Today Issue December 1994<\/a>
<\/h2>\n

Kit Builders’ Primer<\/h3> – Yeah I built that …… WB8VGE 10

Stretched Vertical Gain Antenna tor 6 Meters<\/h3> – Here’s a way to dramatically improve your 50 MHz operating capabilities …… WB2EQG 30

The CW Operator’s Friend<\/h3> – Simply push a button and send those frequently-repeated CQs IDs and QTHs …… WV5Q 36

Polarity Protection Plus<\/h3> – Don’t take a chance of smoking your next project! …… K5DKZ 40

DTMF Computer Interface<\/h3> – Harness the power of your PC to operate DTMF tone controls …… K7CAH 42

The Oak Hills Classic<\/h3> – Dual-band QRP kit …… AC4HF; Wee 14

S & S Engineering’s ARK-4<\/h3> – A 40 meter transceiver kit …… WB8VGE 18

The Kenwood TH-22AT Hand-held Transceiver<\/h3> – Meet the latest in little HTs from Kenwood …… WB9RRT 22

The Ameritron ALS-500M Solid-state Mobile HF Amplifier<\/h3> – The long-awaited linear lives up to its promotion …… W6KOW 26

The Bencher Chrome Straight Key<\/h3> – Experience the feel of a well-built code key …… WB6NOA 48
\n
\n

73 Ham Radio Today Issue January 1995<\/a>
<\/h2>\n

The Pyramid Antenna<\/h3> – Harness the power of this 10 meter workhorse …… W9CGl 14

Using GE Progress Line Receiver Strips<\/h3> – A low-tech solution for many situations …… KI5PGI 24

PTT Control from Receiver Audio<\/h3> – Here’s an easy way to key a transmitter for remote or repeater operation …… KB8XI 32

The 80\/40\/30m Tripole<\/h3> – It’s a what? …… W9CGI 36

The Yaesu FT-840 HF Transceiver<\/h3> – Enjoy a simple-to operate full-featured HF rig …… N1BAC 10

The MFJ-1796 Multiband Vertical Antenna<\/h3> – A lot of antenna in a small package …… K7UGQ 34

The Heil Headsets with Boom Microphone<\/h3> – Listen to these quality featherlight units …… WB6NOA 41
\n
\n

73 Ham Radio Today Issue February 1995<\/a>
<\/h2>\n

Dual Bi-square Loop for HF<\/h3> – Try this easy low-cost approach on 20 and 2 meters …… K5DKZ 18

Reading Morse Code on Your PC<\/h3> – Decipher Morse code right off the air or improve your own fist …… W6PRO 22

Cheap Dual-band Yagi<\/h3> – A fine VHF\/uHF beam made from old TV antennas …… KA0NAN 46

Grounding and Lightning Protection Part 1<\/h3> – Protect your shack and yourself from lightning …… W5UOJ 52

The Yaesu FT-900AT HF Transceiver<\/h3> – Base station performance from a compact mobile rig! …… WB2WIK\/6 10

Midland Corporation Models 18-405 and 18-410 Base Station Antennas<\/h3> – Good VHF\/uHF performance at a moderate price …… KT2B 28

Down East Microwave’s DEM 144-28K and DEM 222-28K Linear Transverters<\/h3> – A big step forward in transverter design …… KT2B 32

The Sentech Model Q144-8 2 Meter Quagi Antenna<\/h3> – Take another look at this VHF workhorse …… WB2WIK\/6 38

Radio Shack’s DSP-40<\/h3> – A low-cost Digital Signal Processor you can add on …… K7UGQ 42
\n
\n

73 Ham Radio Today Issue March 1995<\/a>
<\/h2>\n

A Practical Weather Satellite Receiving System Part 1<\/h3> – Set up your own satellite receiver\/decoder …… ZRBUM 10

HF-5AT Antenna<\/h3> – An easy-to-build dual-band HF satellite antenna …… AC3L 24

Grounding and lightning Protection Part 2<\/h3> – Effective RF grounding for the shack …… W5UOJ 26

The Azden PCS-7200<\/h3> – A solid 222 MHz mobile transceiver …… WB2WIK\/6 32

Ham University Interactive<\/h3> – Learn code and theory and play CW games …… WB6NOA 38

LOGic 4<\/h3> – Ham radio software for Windows or DOS …… WA3USG 40

S & S Engineering’s PC-1 Programmable Counter Kit<\/h3> – A low-cost add-on frequency counter you can build …… AC4HF Czuhajewski 44
\n
\n

73 Ham Radio Today Issue April 1995<\/a>
<\/h2>\n

A Practical Weather Satellite Receiving System Part 2<\/h3> – Software and interfacing with me PC …… ZR6UM 10

Build an Intelligent Relay<\/h3> – A quick-to-make microprocessor-based device controlled by your HT …… N8LXS 22

The Antenna Elevator<\/h3> – The closest thing to a skyhook …… WB2DZF 36

Specialized Top-band OX Receiving Loop<\/h3> – Listen to the action on 160 meters …… G2BZQ 38

Build an Efficient HF Mobile Antenna<\/h3> – An electrically and mechanically sound design with easy band change coils …… K5DKZ 42

A Shortwave Converter for Your Scanner<\/h3> – Build this easy gadget and listen in on HF …… WA1KYL 54

The Yaesu FT-2500M<\/h3> – A rugged mil-spec radio …… K4CHE 28

The GAP Voyager DX<\/h3> – The Voyager compared with a dipole in free-space …… WB6NOA 32
\n
\n

73 Ham Radio Today Issue May 1995<\/a>
<\/h2>\n

Builder’s Guide to the Universe<\/h3> – A beginner’s guide to home-brewing …… WB8VGE 10

Wart Remover<\/h3> – Build this easy module to eliminate unsightly wall parasites from your shack …… WB8VGE 16

6 Meters-the In-between Band<\/h3> – Excitement for all license classes …… WB6NOA 34

A Foolproof Power Controller<\/h3> – Be prepared when the commercial power shuts off …… KN4HL 40

K4SYU Loop Antenna<\/h3> – A compact portable HF solution …… K4SYU 44

The Trident TR-1200 Wide-range Monitor Scanner<\/h3> – Listen to the world with this compact little unit …… N1QGS 24

The Oak Hills Explorer Kit<\/h3> – Build a fun inexpensive and quality CW rig …… AC4HF 30

The Alinco DR-mO6<\/h3> – A new 6 meter mobile transceiver …… WB6NOA 36

The Comet HA4S<\/h3> – A mobile HF antenna …… N2PNG 38
\n
\n

73 Ham Radio Today Issue June 1995<\/a>
<\/h2>\n

The N4UAU Super CW Station<\/h3> – This li’l gizmo does it all! …… N4UAU 10

Collinear 5\/8<\/h3> – Wave Omni Antenna for 2 Meters – Commercial antenna performance at a home-brew price! …… WD0O 18

Battery Monitor and Charge Controller<\/h3> – Check the voltage and keep the battery charged …… K4GOK 32

An Inexpensive Morse Code Keyer<\/h3> – Build your own for under 10 bucks …… N2YMW 36

Measuring the Antenna from the Shack<\/h3> – The half-wave length feedline and how to get it …… W0RKU 40

Tone Burst Generator and Decoder<\/h3> – Versatility and control for under $5 …… WB9YBM 46

The SGC-230 Antenna Tuner<\/h3> – A Iongwire tuner for use on land or at sea …… WB6NOA 22

The KK-1 from AEA<\/h3> – The perfect keyer …… WM4U 30

The COY2M3EL “Stealth” VHF Yagi<\/h3> – A 144 MHz antenna from Swiech Communications Systems …… KT2B 44
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\n

73 Ham Radio Today Issue July 1995<\/a>
<\/h2>\n

Dish Antenna for Weather Satellite Images<\/h3> – Build your own 5-loot parabolic dish for 1691 MHz …… WA9PYH 10

A low Noise Amplifier for 1691 MHz<\/h3> – Build this LNA for weather satellite reception …… WA9PYH 20

Sailing with Ham and Marine Radio Equipment<\/h3> – Carry ham and marine systems aboard without permanent installation …… WB6NOA 26

2 Meter Collinear Vertical Antenna<\/h3> – Build almost 6dB of gain for almost $10 …… KA0NAN 40

A Decibel Primer<\/h3> – Simple math for the Technician Class …… N5OWK 42

DTMF Decoder<\/h3> – High-speed home-brew DTMF control …… K7CAH 46

First look at the Radio Shack HTX-212 2 Meter Mobile Transceiver<\/h3> – It looks like any other but this one is unique …… K7UGO 30

Pasokon TV SlowScan TV Interface<\/h3> – SSTV for everyone! …… KB1UM 32

Maldol Antenna’s HS-2 and HS-75<\/h3> – Check out this pair of lightweight VHF\/uHF yagis …… KT2B 36
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\n

73 Ham Radio Today Issue August 1995<\/a>
<\/h2>\n

Tube TNC<\/h3> – A packet breakthrough! …… W0XI 10

VE7PMR Solar-powered Packet Node<\/h3> – Is packet worth nearly freezing on a mountain? Sure! …… VE7VMS 12

19 200-baud Packet<\/h3> – A simple way to do it …… WB9JTK 16

RF Speech Processing<\/h3> – How to get an extra 6 to 9 dB of talk power on SSB …… VK3CA 24

Working the Final Frontier<\/h3> – Ideas for a fun and easy ham space program …… N2CQR\/h18 26

Single-ghip Identifier<\/h3> – A simple compact identifier for foxhunting and beacon operation …… K4CHE 30

Radios Telephones and the Amateur<\/h3> – Who’s the culprit in telephone interference: the RF station or the telephone? …… W5UOJ 32

A Simple Precision Voltage Standard<\/h3> – A tool for the serious builder’s workbench …… K4GOK 44

Transformerless Amplifier<\/h3> – Putting an Old twist on new technology …… W6YBT 48

The Octopus<\/h3> – A simple multipurpose testing device …… KB5RMZ 55

Icom Z1A -dual-band HT<\/h3> – It’s definitely different! …… WB6NOA 34

Hewlett Packard 200LX Palmtop Computer<\/h3> – What another computer? Try this one on for size …… KE8WO 40

Teeny Talkie!<\/h3> – Standard redefines …… 42
\n
\n

73 Ham Radio Today Issue September 1995<\/a>
<\/h2>\n

Simple J-type 10m Vertical<\/h3> – For more versatile DXing …… W6IOJ 10

Tuner Helper<\/h3> – An easier (and safer) way to tune your antenna while driving …… K3PUR 14

Just Another Loop Antenna<\/h3> – Or is it? …… WB2EGQ 20

A Discone Antenna for 10 Meters<\/h3> – It looks like a bird cage but works like a yagi …… W1ZB\/6 32

Check Your SWR Bridge<\/h3> – Think you have a good bridge? Find out for sure …… K1WVX 34

Longwave-plus DX Techniques<\/h3> – Exploring the undervalued lower frequencies …… G2BZQ 38

The Icom IC-738 HF Transceiver<\/h3> – A sturdy and popular rig …… WB2WIK\/6

Sony ICF-sW100S Pocket Shortwave Receiver<\/h3> – A ham station in your pocket …… KB1UM 50
\n
\n

73 Ham Radio Today Issue October 1995<\/a>
<\/h2>\n

The QRP Delight<\/h3> – A full-featured antenna tuner with built-in SWR meter …… AD5X 10

DDS Dream VFO<\/h3> – Yes you can build your own synthesizer! …… KD1JV 14

Portable Solar Electric Power Generator<\/h3> – The sun is free for the using …… K4SYU 20

Armstrong Updated<\/h3> – A high-performance regenerative short-wave receiver …… KC3ZQ 26

Link it All!<\/h3> – Why settle for operation on just two bands? …… WB9YBM 32

Boring Beacons!<\/h3> – Making additional use of beacon signals …… N6JSX 34

Senior Citizens Upgrade<\/h3> – A lifetime of ham experience should count! …… WN3UWH 44

QRP Mini-tuner<\/h3> – A neat little addition to your rig …… WU0L 46

The Ramsey Electronics SX-20 QRP SSB\/cW 20m Transceiver<\/h3> – A QRP Powerhouse …… KT2B 48

The Maggiore Hi Pro R1 Repeater<\/h3> – A full-featured repeater at an affordable price …… K1ZJH 52
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\n

73 Ham Radio Today Issue November 1995<\/a>
<\/h2>\n

Home-brew Quagis<\/h3> – A novice can build these 2m and 440-mHz antennas for under $15 …… KE6HVH 10

A Boy Scout’s “Drab” Life<\/h3> – Teaching in a unique second language …… KB7UIM 16

A Simple Wattmeter<\/h3> – How much does your equipment cost to power? …… N7APE 20

The Capacitator<\/h3> – You’ll get a charge out of this! …… VK6BQN 22

Crystal-controlled Audio Generator<\/h3> – Clean reliable frequencies from junk box parts …… KB4ZGC 28

Easily Constructed General-purpose Wide-band Preamp<\/h3> – Boost any audio or RF signal from 50 Hz to 100 MHz …… NZ9E 34

The Simple Simplex Repeater<\/h3> – An easily built project for interlacing with most transceivers …… KB8ITU 36

Poor Man’s Doppler<\/h3> – A Doppler system that’s as “dumb” as a fox …… K3BYCC 38

A Serial Port CW Terminal or ROBO-cOPY Revisited<\/h3> – Cure the itch for computer CW …… N2HTT 44

The MFJ-208 2 meter SWR Analyzer<\/h3> – Cheap easy to use and it works! …… K4CHE 48

Alinco DX-70 HF\/6m Transceiver Surprises Everyone<\/h3> – Elegant and wide functioning with many conveniences for a good price …… WB6NOA 50
\n
\n

73 Ham Radio Today Issue December 1995<\/a>
<\/h2>\n

A Portable Integrated 20 Meter SSB\/cW QRP Ham Radio Station<\/h3> – A ten pound powerhouse …… KB4ZGC 10

Nostalgia For The Future<\/h3> – High performance crystal radio utilizes a high-efficiency JFET detector and dual resonant circuits for superior performance …… KC3ZQ 14

A Perspirational Message<\/h3> …… W2NSD\/1 17

Jan Mayen<\/h3> – A Special DXCC Country …… AJ0N\/lA6US 18

Key It!<\/h3> …… KB1UM 26

A Milliohm Adapter For Your DMM<\/h3> – Expand your meter sensitivity …… K4GOK 34

QSY Internet!<\/h3> – A wide menu of information sources …… WD5GNR 38

A Problem Under Under The Aurora Borealis<\/h3> – (Or a ham’s Christmas Fable from our Hamly to yours!)…… KM6II KD6BIT KD6ARA KE6PNA 45

Nikola Tesla The First Radio Amateur<\/h3> – And the real inventor of radio …… W8AHB 46

Alinco DX-70 HF\/6m Transceiver<\/h3> – Surprises Everyone …… WB6NOA 20

TE-32 Multi-tone CTCSS Encoder<\/h3> …… WB9RRT 22

The Hamtronics RWWV Receiver<\/h3> – A precise dedicated receiver for WWV …… WA3WGV 30

Kenwood TS-870S HF Transceiver<\/h3> …… K6YAZ 41
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\n

73 Ham Radio Today Issue January 1996<\/a>
<\/h2>\n

The SP-10 “Senior Spider” Transceiver<\/h3> …… WA8TXT 9

Low Cost Switching Power Supply For HF Transceivers<\/h3> …… AD5X 16

Simple Mobile Protection<\/h3> …… K8KWD 18

Going Public<\/h3> …… WB2JNA 22

Tesla!<\/h3> …… W8AHB 24

Telephone Flasher<\/h3> …… W6ZZB 30

Free Electricity<\/h3> …… WB8VGE 32

Kill Your Interference<\/h3> …… WB2WIK\/6 45

Add-on 2 Meter Receiver Selectivity<\/h3> …… WA4BLC 38

Oak Hills OHR-400 4 Band QRP Kit<\/h3> …… AC4HF 41

Communications Simplified Part 1<\/h3> …… K2OAW 66

Line Voltage Monitor<\/h3> …… KB4ZGC 86

RF Sniffer<\/h3> …… KB4ZGC 85

Two meter SSB\/satellite Loops<\/h3> …… WB6NOA 84
\n
\n

73 Ham Radio Today Issue February 1996<\/a>
<\/h2>\n

Satellites Weather Imagery and Sunrayce ’95<\/h3> – There’s an Indiana Jones in each of us …… K8WPI 10

Souping Up a Surplus field Strength Meter<\/h3> – Increase the sensitivity of your ME-61\/gRC field strength meter …… AD5X 18

Microwaving on Monument Peak<\/h3> – The story behind our cover photo …… WB6IGP 20

A Mobile Power Panel<\/h3> – Protect your vehicle and your rig …… N2YMW 21

Do You Remember?<\/h3> …… W5UOJ 22

Basic Packet Modem<\/h3> …… N3PRT 24

UHF\/vHF Home-brew Measuring Gadgets<\/h3> – Accurate easy satisfying! …… W5IOJ 32

Every Ham’s Average\/peak Reading RF Wattmeter<\/h3> – The only one you’ll ever need …… KB4ZGC 36

A Hot Selective 2m Receiver You Can Have fun Building<\/h3> – Take a look at the Hamtronics R-100 a great little receiver kit …… WB9RRT 38

The Icom 706 All-band Transceiver<\/h3> – Reviewed by a very happy user …… AD5X 40

The Alinco DR-610T<\/h3> – A tough new dual-band remote–head mobile\/base transceiver …… WB6NOA 46

How About a 2W\/10m Transceiver Kit<\/h3> – Build a “fits-in-your pocket” 40m QRP transceiver …… AC4HF 50

Communications Simplified Part 2<\/h3> …… K2OAW 66

Making Your Club More Exciting<\/h3> – How the BARA broke out of its rut …… NB2F 83
\n
\n

73 Ham Radio Today Issue March 1996<\/a>
<\/h2>\n

JY74X-jY74Z: A Joint Jordanian-israeli Operation<\/h3> – Our peace process dividend: DXpeditions to Amman and Mt. Nebo celebrating the first anniversary of the “Washington Declaration” peace accords …… 4X6KJ-jY8KJ 10

Into Orbit with the Final Phase 3 OSCAR<\/h3> – It’s a bird! it’s a plane! it’s …… WA5ZIB 16

73’s DX Dynasty Award<\/h3> …… Staff 26

Simple Secondary Frequency Standard<\/h3> – Stay within your legal frequency …… KB4ZGC 30

The Tiny Tic-tac Tester<\/h3> – The useful and easy-to-build trester is a good first-time project …… N4UAU 33

A New Look at the VXO<\/h3> – 80 though 10 meter coverage using a TV color burst crystal …… W2IMB 36

Facts and Fibs about Preamps<\/h3> – Two do-it-yourselfers …… ZL1AAN 41

Official DX Dynasty Countries List: 3\/96<\/h3> …… Staff 46

A Stealth 40-10 Meter Antenna<\/h3> – An indoor antenna for the desperate that works from 40m through 10m …… KB4ZGC 50

A Simple Capacity Meter<\/h3> – Have fun building your own with this simple construction project …… KB4ZGC 71

What’s New In Kits?<\/h3> – Take a gander at some goodies …… WA3ULH 22

The Wilderness KC1<\/h3> – An integrated keyer – displayless frequency counter …… AC4HF 40

The New Index Laboratories QRP Plus Transceiver<\/h3> – Check out this tiny fuII-function QRP HF transceiver …… WA3ULH 44

How About a 2W\/10m Transceiver Kit<\/h3> – Build a “fits-in-your-pocket” 40m QRP transceiver …… AC4HF 50

The Hamtronics TD-4 Selective Calling Unit Kit<\/h3> – A tiny package of fun! …… WB9RRT 52
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73 Ham Radio Today Issue April 1996<\/a>
<\/h2>\n

440 Super J-pole Antenna<\/h3> – Here’s a great club project …… KA0NAN 10

The Hentenna<\/h3> – An easy construction project and a chance to experiment …… KA0DAQ 14

The Big Loopy Skywire<\/h3> – Cheap and simple with a bodacious signal …… NH6XK 18

Easy to Build 10m Beam<\/h3> – The Sun-spots are coming. The Sun-spots are coming …… N6CJU 20

Johnson Matchbox Renaissance<\/h3> – A flea market winner! Or build one yourself …… WB2ECG 28

Ham Radio and Summer School<\/h3> – The 1995 session at Sno-isle …… W7KZE 30

Alaska Amateurs and Their Antennas<\/h3> – Amateur radio way up North …… WB2AQC 32

Debunking Some Myths about Antennas Feedllnes & SWR<\/h3> – 14 Facts to pass along …… W8DMR 40

The N1IR Tree Antenna<\/h3> -Yes this is the April issue… but this is a real antenna not a joke …… N1IR 42

Three-element Direct Connect Beam for 2m<\/h3> – A Tiny 2+ 1 …… AC3L 54

The Trifield Meter<\/h3> – Do you trust your microwave oven? …… KB1UM 17

CB 148\/450 Dual-band Corner Reflector<\/h3> – Big dual-band signals are just around the comer …… WB9RRT 24

Startek ATH-50 Frequency Counter<\/h3> – Functions features and fun! …… WB9RRT 36

The ISOTRON 80<\/h3> – Good things come in small packages …… K9HKS 44

Communications Simplified Part 4<\/h3> …… K2OAW 66

The Tech Side; More Adapters<\/h3> …… KB1UM 70

Troubleshooting Your New Kit<\/h3> …… WB8VGE 72

Edison-the Fabulous Drone<\/h3> …… Ekhorne 82
\n
\n

73 Ham Radio Today Issue May 1996<\/a>
<\/h2>\n

Build the Bioelectrifier<\/h3> – Heal yourself and take a poke at the medical establishment the same time! …… WA8YKN 10

Belcher Islands DXpedition<\/h3> – Take off to the Great White North …… VE3WFS 20

A 220 Super J-pole Antenna<\/h3> – 220 -use it or loose it. Here’s a simple inexpensive one-hour building project …… KA0NAN 26

The Difference Is Dedication<\/h3> – Ham radio Saves four communities …… K7OOZ 30

Tape-wound Antennas<\/h3> – Neat efficient and easy to build …… WB6IOM 32

Transmitter Hunting Equipment: A Club Project<\/h3> – Stimulate and strengthen your club membership …… K3BY 36

Simple Multi-use Amplified Speaker<\/h3> …… KB4ZGC 40

How to Make an Old HW-8 Come Alive<\/h3> – New life for a vintage rig …… K8MKB 42

Simply Portable<\/h3> – An easy way to operate in the field …… N0BLX 48

Antenna Noise Bridge Detector<\/h3> – Tune your antenna then measure its radiation pattern with this pocket sized instrument …… KB4ZGC 78

Build the Neat 2m Amplifier Kit<\/h3> – A great pair of shoes for your HT or data radio …… WA4VAF 44

The DVR-1 Digital Voice Recorder<\/h3> …… WA4BLC 50

The Ten-tec SS-11 Switching Power Supply<\/h3> – Neat compact lightweight …… W8DYF 68

The New Index Laboratories QRP Plus Transceiver<\/h3> – Check out this tiny full-function QRP HF transceiver …… WA3ULH 50

How About a 2W\/10m Transceiver Kit<\/h3> – Build a “fits-in-your- pocket” 40m QRP transceiver …… AC4HF 52

Communications Simplified Part 5<\/h3> …… K2OAW 64

Radio Magic<\/h3> …… WB8VGE 74

The Tee Antenna<\/h3> – Short of room? This antenna may be just your size …… K4IPV 86
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\n

73 Ham Radio Today Issue June 1996<\/a>
<\/h2>\n

The Discharger<\/h3> – A NiCd nurse you really should build …… K4GOK 10

Wheelchair Mobile<\/h3> – Dave Skinner KC5NLK operates from his wheelchair …… WD5BIV 20

Upgrading Your Transmatch<\/h3> – Make your buddies sick with envy by adding a Ten-toc tuning bridge …… KJ7FX 22

Foxhunting Deluxe<\/h3> – A compact antenna switching unit for Doppler DF …… K4CHE 28

The 2 Meter Diamond Beam<\/h3> – It could be a real gem in the rough …… AD1B 32

Oersted…Faraday…Telsa<\/h3> – Their discoveries created our worldwide system of electric power …… W8AHB 34

Make a MICOR Into a Repeater<\/h3> – A simple modification using a popular mobile radio …… VE3RHK 42

Economical High Current Power Supply<\/h3> – A “smart” battery charging system to build …… WA8YCG 50

Simple Inductance Meter<\/h3> – Measure small inductions with this easy-to-construct instrument …… KB4ZGC 56

Dealing With Doublespeak<\/h3> – Interpreting befuddling transceiver spec sheets …… NZ9E 70

The MFJ-9406 6m SSB Transceiver<\/h3> -6 meters: The adventure begins …… AC4HF 38

The ANC-4 Antenna Noise Canceller from JPS<\/h3> – Reduce that noise!…… WB2QLL 44

The Greco Mountain GM-20 QRP<\/h3> – Another small wonder! …… AA0XI\/vK5FN 46

The Carolina Bug Katcher Multiband HF Mobile Antenna<\/h3> …… AC4HF 48

Communications Simplified Part 6<\/h3> …… K2OAW 65

The BEARS Hunt the Fox<\/h3> …… WB8VGE 68

Coaxial Cable<\/h3> – Get comfortable with it …… W1OLP 84

Pylon Mobile Mount<\/h3> -a quick way to install your car rig …… W1XE 85
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73 Ham Radio Today Issue July 1996<\/a>
<\/h2>\n

Ham Shack Test Equipment<\/h3> – What you really need based on the authors 47 years of experience …… KB4ZGC 10

Garbage In-No Garbage Out<\/h3> – Turn hardware store purchases into a cavity filter for satellite and 2m reception …… AA6NG 12

A Funny Thing Happened On The Way To The Shack<\/h3> – Strange stories from the world of hamdom! …… W3UWH 16

Receiver Pre-amplifiers<\/h3> – The pros and cons of these little signal boosters …… K4IPV 17

Weather Control and Mind Control<\/h3> – Science fiction? Well it’s science but not fiction! …… W1XU 18

Persistence Wins<\/h3> – Nothing ventured etc …… KK5LU 21

How Much Are Those Decibels Worth?<\/h3> – A survey of amplifier costs and the resulting S-units …… WA4BLC 30

The JB Keyer<\/h3> – A low-tech solution to good keying …… KU8K 31

Lubricating a Transceiver’s Fan Motor<\/h3> – Cut down on background noise and prolong the motors life …… NZ9E 38

The 2m Quad Project<\/h3> – Here’s a great antenna project for your club …… W7KZE 44

JPS Communications NIR-12<\/h3> – DSP? Yes you need it! …… WB2QLL 22

The MFJ 20 Meter SSB Rig<\/h3> – More fun in the sun …… AC4HF 26

The BASIC Stamp<\/h3> – Wait ’til you read about this fabulous new toy! …… WB2SRF 28

CMOS Super Keyer 3<\/h3> – “State of-the-art-kit us a bargin!” …… AA0XI\/vK5FN 80

Home-brew Whip Antennas<\/h3> …… KB4ZGC 34

Just Who Did Invent Radio?<\/h3> …… W5UOJ 40

Repeater Coordination<\/h3> …… W5UOJ 42

Life After Your No-codeTech License and Handheld<\/h3> …… VE3WMF 46

Communications Simplified Part 7<\/h3> …… K2OAW 64

Where Am I?<\/h3> …… White 74
\n
\n

73 Ham Radio Today Issue August 1996<\/a>
<\/h2>\n

Build the QUAD-12 Personal DataLogger<\/h3> …… N8KDO 10

Vee Antenna With Vertical Tails<\/h3> – A multiband antenna with low-angle radiation for the low bands …… K0NM 16

PC Controlling Your Rig<\/h3> – All it takes is a few parts and a BASIC program …… K8KWD 22

Worthy of Recognition: Hap Holly KC9RP<\/h3> – Blindness is a challenge for this versatile accomplished ham …… NZ9E 28

Simple Crystal Activity Tester<\/h3> – Check and match crystals for your home-brew projects …… KB4ZGC 34

PVC Goes Camping<\/h3> – Full-time RVers take note …… KA1FPP\/7 38

The “J” Antenna<\/h3> – An oldie but a goodie …… N6JSX\/9

Automatic Voltage Controller<\/h3> …… KB4ZGC 46

Receiver RF Preamp<\/h3> – There is a way to improve that old receiver’s performance …… KB8XI 48

Communications Simplified Part 8<\/h3> …… K2OAW 64

Your E-mail Classroom Connection -NTS and digtal communications<\/h3> …… KZ1Z 74
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\n

73 Ham Radio Today Issue September 1996<\/a>
<\/h2>\n

The Amateur’s Guide to Free Energy Devices<\/h3> – A history and hints for further experimentation …… WA8YKN 10

Adventures on the Red Sea<\/h3> – DXing in style in an unforgettable setting …… KA9SOF 20

The Wonderful Twin-t<\/h3> – Its a code oscillator: a transistor or even a piano! …… AD4UA 24

A Kite\/balloon-supported Zepp for 160 Meters<\/h3> – Make your antenna fly high! …… W1GV 26

My Indoor Antenna Farm<\/h3> – Yes you really can DX with a stealth antenna …… W6YBT 29

Off 2 4 Good<\/h3> – Cheap and easy fixes for TVI …… W0WUZ 30

FRACVERT: Small Fractal Footprint Vertical<\/h3> – Fractal counterpoise or top hat too! …… N1IR 34

Have we Been Had?<\/h3> – Again? …… WA8HSU 36

An Antenna Plotting Oscillator<\/h3> – Here’s a handy one-chip piece of equipment you can build …… G2BZQ 42

Saving Ourselves From Ourselves<\/h3> – Its called getting involved …… KN4HL 46

BC Band Antenna Switchover Relay<\/h3> – A better way for Icom HF radios …… NZ9E 69

Your Next Buy: An MFJ-259<\/h3> – Wait ’til you see what this antenna analyzer can do for you! …… K5LAD 23

TD-3 Subaudible Tone Decoder Module<\/h3> – Hamtronics kit saves one club’s treasury – and provides a group project …… WB9RRT 32

Communicating on the Internet<\/h3> – With Quarterdeck -license-free! …… K7UGQ 40

Communications Simplified Part 9 <\/h3>– Why TV radio and FM carried communications really work …… K2OAW 64

From Kilowatts to Femtowatts?<\/h3> – Wrestling with those dog biscuits …… W8DMR 68

Heathkit Mania<\/h3> – And all bought at bargain prices! …… WB2WPM 80
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73 Ham Radio Today Issue October 1996<\/a>
<\/h2>\n

Ultimate Power!<\/h3> – Station power from a dead UPS …… KF9GQ 10

Colorado QRP Club’s Field Day Operation<\/h3> – Field Day the hard way …… AAOXI 14

440 Yagi Link antenna<\/h3> – Improve your repeater system by building new antennas for about $2 each! …… KA0NAN 16

A Versitile QRP Random-wire Antenna Tuner<\/h3> – A quick way to tune up your QRP rig in the field …… KB4ZGC 19

Operating RS-12<\/h3> -it’s easy …… N5UHB\/XE2MXU 23

A Multiband Trap Dipole Antenna System<\/h3> – This easy constructed HF antenna system is a perfect combo for use with portable rigs …… K9KWD 25

Build the FOX Controller<\/h3> – A sneaky device to make foxhunting even more fun …… WB2SRF 32

A 30m Through 80m Loop<\/h3> – Great indoor antenna for QRP …… WV8R 36

Desoldering<\/h3> – Damage control for the PC board…… WB8VGE 38

A Simple QRP Wattmeter\/dummy Load<\/h3> – OK how many countries have you worked with 5W? …… KB4ZGC 46

Communications Simplified Part 10<\/h3> …… K2OAW 64

What’s All This QRP Stuff?<\/h3> …… AA7PE 80
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\n

73 Ham Radio Today Issue November 1996<\/a>
<\/h2>\n

Switching Power Supplies<\/h3> – Different is good! …… NZ9E 10

Designing RF Probes<\/h3> – A simple one-hour test equipment project …… KB4ZGC 17

A Low Current Light<\/h3> – Great portable operation …… KB4ZGC 19

Can You Top This?<\/h3> – The worlds tallest mobile antenna? …… N6JF 20

The CCD antenna is now available for the amateur bands<\/h3> – A QRP\/sWR Power Meter …… KB4ZGC 28

A Dirt-cheap Broadband 80 Meter Vertical<\/h3> – The “outhouse” antenna …… W0RKU 30

Morse’s Code<\/h3> – How the Tech’s terror was invented …… KC8ALW 34

Top-loaded Vertical for 2 Meters<\/h3> – A small antenna with capital performance …… AD1B 36

The Magical Audio Filler Revisited<\/h3> – Updating a dandy little receiver helper …… W6QIF 38

Hams on the Radio Information Highway Part 1<\/h3> – The Wide Web will help you enjoy ham radio more than ever …… KB7NO 48

I Built It Myself!<\/h3> -an easy weekend project- build a variable-voltage power supply …… K8KWD 80

Hamtronics R139 Weather Satellite Receiver<\/h3> – Enjoy monitoring atmospheric conditions and the satisfaction of building the kit …… WB9RRT 25

Now You See It Now You Don’t<\/h3> – You won’t get stuck with this TapeTenna antenna kit. …… AA0XI\/vK5FN 32

SSTPLUS Version 9615<\/h3> – A satellite tracking program from RPV Astronomy …… AD1B 44

Communications Simplified Part 11<\/h3> …… K2OAW 64

The Junk Box Power Supply<\/h3> – A short course on power supplies …… N5TWH 77

A 20-foot Sky Hook<\/h3> – Build it for less than $10! …… W8DYF 86
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73 Ham Radio Today Issue December 1996<\/a>
<\/h2>\n

Automatic Packet Reporting System<\/h3> – You can track anything with this! …… WB4APR 10

Shooting Straight Up<\/h3> – NVIS: A neglected short-range technique …… XF1\/kB6ASH 22

Build This 6m Attic Antenna<\/h3> – A simple stealth antenna protect …… KA0NAN 28

Circulators Anyone?<\/h3> – Keep the traffic flowing …… W6OIU 30

Hams on the Information Highway Part 2<\/h3> – How you can easily find and start using Usenet groups …… KB7NO 33

The Solder Slurper<\/h3> – Build our own desoldering station-cheap! …… N6GKC 40

Audio Filter Alignment Generator<\/h3> – Another piece of test equipment you can build …… KB4ZGC 42

The Art and Challenge of Sending CW<\/h3> – When a QSO is much more than just “RST QTH name and 73” …… W6BNB 44

Join the North Pole Network<\/h3> – Smiles are virtually guaranteed when hospitalized kids talk with St. Nick …… WA6OPS; K0OV

CW Enhancer<\/h3> – Making your signal stand tall …… W2GOM\/7 68

Saving the Amateur Radio Spectrum<\/h3> – A case supporting amateur licensing fees …… KN4HL 76

Mobile Or Chairside HT Holder<\/h3> – A simple practical project based on a boat accessory …… XF1\/kB6ASH 86

The Ten-tec 1209 2-to-6 Transverter<\/h3> – An easy way to have some fun! …… VA3XDM 20

Woodhouse Communications’ APT-2CP Omnidirectional Antenna<\/h3> – And its perfect sidekick Hamtronics’ LNG-137 receiver preamp …… WB9RRT 24

JBI Universal Radio Interface Kit<\/h3> – A great first-time project! …… WB2WPM 26

Communications Simplified Part 12<\/h3> …… K2OAW 64

LED Checker Plus<\/h3> – Make it even more useful …… Thompson 77
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73 Ham Radio Today Issue January 1997<\/a>
<\/h2>\n

The ScopeMixer<\/h3> – An adventure in ham radio systems integration …… N6GKC 10

A Flexible Keyer<\/h3> – A weekend of investments: a lifetime of ease …… W2GOW\/7 17

Simple Mods for the Ramsey FX Transceiver Kit<\/h3> – Customize it! …… N0BLX 24

Build This Receiver Pre-amplifier<\/h3> – And use just about anything for an antenna …… W9CHV 26

Rechargeable Batteries<\/h3> – The bottom line …… NZ9E 28

A Positive and Negative Power Supply<\/h3> – A simple one-evening project …… KB4ZGC 31

An Enhanced Automatic Voltage Controller<\/h3> – Make this project even more useful …… N4UAU 42

HFx From Pacific Sierra Research Corporation<\/h3> – New propagation forecasting software …… N1VXW 35

MultiFAX AM\/fM WEFAX Demodulator<\/h3> – Fine-tuning a satellite tracking system …… WB9RRT 40

Communications Simplified Part 13<\/h3> …… K2OAW 64

Build a Well-regulated Power Supply<\/h3> …… N8PTG 69

A Hamfest Computer Shopping Guide<\/h3> …… N3JSU 74

A Retiree’s HF Mobile Operation<\/h3> …… K2FZ 78
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73 Ham Radio Today Issue February 1997<\/a>
<\/h2>\n

Amateur Radio and Linux<\/h3> – Software home-brewing is here! …… W9IF 10

Elegant Rotating Revisited<\/h3> – An enhanced Beam-aiming circuit …… W1ZZB 17

Antenna Tuners<\/h3> – Do we really need them? …… W6YBT 21

The Topbander<\/h3> – A cheap and easy antenna tuner for 160 meters …… W8ND 23

Build The Turbo Digi-sniffer<\/h3> – A simple-to-make digital field strength meter …… AH2HR\/5 26

Sumas Mountain High<\/h3> – Building a self-sufficient repeater tower on a British Colombian mountain …… VE7BID 30

Add A Microphone Pre-amplifier to Your 10 Meter Rig<\/h3> – Low-cost speech processing can increase your power …… AD5X 32

The Telegraph<\/h3> – A little device that changed the world …… K8KWD 36

The Gel Cell Storage Battery<\/h3> – A great little power supply …… KB4ZGC 41

In Search of Higher Power<\/h3> – and a safe connection for it …… W6YBT 70

Antenna? What Antenna?<\/h3> – A stealth antenna farm for a small lot …… KB4ZGC 71

Hentenna Footnotes<\/h3> – Using an EZNEC model to build a sample …… AD1B 75

Hamtronics RWX Storm Watch Weather Broadcast Receiver<\/h3> – Hams need to know about storm emergencies …… WA3WGV 34

The Ten-tec T-kit 6 Meter Transverter<\/h3> – Here’s a fine introduction to modern kit-building …… N0BLX 44

Communications Simplified Part 14<\/h3> …… K2OAW 64

Simple T-r Circuit<\/h3> …… WU0L 67

The Quest for the Ideal QTH<\/h3> …… K2FX 80
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73 Ham Radio Today Issue March 1997<\/a>
<\/h2>\n

Getting Ready for Phase 3D<\/h3> – Start now to be prepared for amateur radio’s next great adventure …… WA5ZIB 10

DXing 10m FM From Perth<\/h3> – The sunspots are rising so 10m will be coming back …… VK6RO 16

The Whole World – In the Palm of Your Hand!<\/h3> – And you thought 007 had some neat stuff …… NZ9E 18

Communications & Live ATV Via Outer Space<\/h3> – Some real-life use of the ham satellites …… W8ZCF W9NTP 25

A 500-foot Antenna?<\/h3> – Going to new heights in Maryland …… KD3VR 31

ARRL Code Survey<\/h3> – Should code be kept as a license requirement? …… AC5HU 35

Are You Ready To Recharge?<\/h3> – Learn about a new battery technology- then build the project to utilize it …… N4UAU 40

Top-fed Out-of-phase Phased-verticals (TOP) Antenna<\/h3> – Computer simulated and field tested …… K0NM 44

A Full-time Space Shuttle Monitoring Station<\/h3> – Other obligations won’t keep you Earthbound! …… K4DRF 51

Satellite Tracking With Style<\/h3> – Nova for Windows …… KA0SNL 27

KC2 Multi-function Transceiver Accessory<\/h3> – The tiny kit that does it all! …… W3DX 33

Communications Simplified Part 15<\/h3> – Antenna basics …… K2OAW 64

Optimizing the Hamfest Experience<\/h3> – The next hamfest flea market you surf can be even more rewarding …… WB2CQM 70
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73 Ham Radio Today Issue April 1997<\/a>
<\/h2>\n

The Hale-bopp Comet and Its Controversial Tale<\/h3> – Buiid the Cosmic Crystal Set and Listen in! …… WA8YKN 10

TV\/vCR Tuner Applications<\/h3> – The first of a three part series …… W6WTU 18

Build a Colloidal Silver Generator<\/h3> – Do-it-yourself has always been at the heart of hamdom …… WA8YKN 21

An 8088 Clock Upgrade<\/h3> – Recycle …… Davis W7RXV 27

The California Phased Array<\/h3> – Easy to build easy so use-and even easier on the billfold …… W7DE 28

Kindergarten a Two-wheeler and a Ham License<\/h3> – It’s fun and very handy to have more than one amateur radio operator in the family …… N0BLX KB0YXB 32

Mini-grid DXpedition to FM13<\/h3> – Sand sun & almost too much surf! …… KB4NVD 34

Limit Morse Code Testing to 5 Wpm<\/h3> – For any class of amateur radio license …… KB7PNQ 36

Small Loop Design for HF QRP<\/h3> – A practical approach …… WV8R 42

Power Monitor\/distribution Panel<\/h3> – Build this early warning system …… KB4ZGC\/w4WD 44

The Insta-flex 2 Meter Yagi Beam<\/h3> – Right at home in awkward places …… KB7WOS 48

Cable X-perts’ G5RV Multiband Antenna Kit<\/h3> – What to do when you’re tired of making do …… N0BLX 26

Hamtronics’ TA-51 Exciter Kit<\/h3> – Perk up your foxhunts with this project …… WB9RRT 40

Communications Simplified Part 16<\/h3> …… K2OAW 64

Quartz Crystals<\/h3> – An overview of these frequency controllers …… W6WTU 70

10 Meters Lives!<\/h3> – Don’t let the sunspot cycle fool you …… AD5X 74
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73 Ham Radio Today Issue May 1997<\/a>
<\/h2>\n

Build an Audio Multiplexer for Your Frequency Counter<\/h3> – Count CTCSS tones without expensive commercial equipment …… KB8XI 10

Build The Bioelectrifier<\/h3> – Can you heal yourself and take a poke at the medical establishment at the same time? …… W6WTU 13

Multi-band Remotely-tunable Inverted L Antenna<\/h3> – Heres a neat 160-40m wire antenna project using flexible parts-placement techniques …… WB2CQM 20

Ham Vacation<\/h3> – A six-week journey through YugosIavia …… WB2AQC 26

The Atlantic Cable<\/h3> – Have you ever thought you’ve had a bad day? …… K8KWD 34

TV\/vCR Tuner Applications<\/h3> – Part Two of three -you may want to keep Part One from last month’s 73 handy …… W6WTU 36

Reviewing the Packet Scene: UK 1996<\/h3> – Britsh Isles hams are ready to meet you! …… GB7LDI 40

Is Your Mixer Circuit Mixing Like It Should?<\/h3> – It’s not bad.. it’s just misunderstood …… N2DCH 44

Build a Half-square DX Antenna<\/h3> – It’s about as simple as they come. And it sure works! …… KG8AN 48

Home-brew Transistor\/diode Tester<\/h3> – Not just blinking lights and weird noises …… Bowman 69

Timewave Technology’s DSP-599ZX<\/h3> – Excellence in digital signal processing …… WA9PYH 30

The Yaesu FT-1000MP Transceiver<\/h3> – Check out the “Big Rigs” …… N1VXW 50

Thanks for the Memories!<\/h3> – The WB9KZY Island Keyer from Jackson Harbor Press …… AA0XI\/vK5FN 52

Communications Simplified Part 17<\/h3> …… K2OAW 64

2m Self-supporting Delta Loop<\/h3> – So simple- and perfect for apartment dwellers …… AD1B 68
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73 Ham Radio Today Issue June 1997<\/a>
<\/h2>\n

Getting a Taste of VHF<\/h3> – Test drive the bands before you invest in the equipment …… VA3ACK 10

Horsetrading on the Ham Bands<\/h3> – The FCC has approved buying selling and swapping hamgear via the traders’ nets …… WB2CQM 16

Build the Mag-glass<\/h3> – Combine the best of the through-glass and the magnetic-mount antennas …… AH2AR\/5 21

Maximize Your Transceiver’s Tuning Range!<\/h3> – Computer control for the Ramsey transceiver kit …… WD8BNR 24

TV\/vCR Tuner Applications (Part 3)<\/h3> …… W6WTU 30

The NiCd Health Maintenance System<\/h3> – Build this project to get maximum life out of your expensive NiCd batteries …… N4UAU 30

The Cobra Antenna<\/h3> – It’s got a more powerful bite than the “Rattlesnake” …… W4JOH 40

The Calibrated Hula Hoop<\/h3> – Keep your radiation within the new FCC limits …… W6YBT 50

LDG’s QRP Auto Tuner<\/h3> – Your dreams come true -in a kit …… AC4HF 42

ICOM IC-r100 Communications Receiver<\/h3> – It may look like a scanner but it is a serious communications receiver with scanning capability …… K4CHE 45

The Standard C108A <\/h3>– It’s the smallest amateur HT available today …… WA3WGV 48

Communications Simplified Part 18<\/h3> …… K2OAW 64

Make a Ten-to-one Probe<\/h3> – Troubleshooting shouldn’t be so much trouble …… AD1B 67
\n
\n

73 Ham Radio Today Issue July 1997<\/a>
<\/h2>\n

ATV is Here to Stay!<\/h3> – Getting started with amateur television …… W5ACM 10

How to See What You Hear<\/h3> – Warning! This is easy! …… KC5ODM 14

C-band low Noise Amplifier<\/h3> – Use discarded satellite receiver parts to soup up your ATV system …… WD5BQN 19

Video Titlers for ATV<\/h3> – If you’re serious about ATV a video titler is the way to go …… N5JXO 21

Antennas for Amateur Television Part 1<\/h3> – An overview of the most useful …… K0NM 27

Home-brew Yagis For Amateur Television<\/h3> – Easy to build easy to use- and not just for beginners! …… N5EM 32

Rocket Video<\/h3> – Video beyond the speed of sound …… KC5AWJ 35

Tiny Power<\/h3> – A big little switcher for ATV (or other) uses …… KC5ODM 41

Finding His Voice<\/h3> – Two young women found an urgent need for CW skills …… Sanders KB6MTV 45

Bicycles Across Switzerland<\/h3> – QRPing through beautiful Switzerland by bicycle is a blast! …… N0BF 47

Let’s Keep CW Alive!<\/h3> – Its distinctive it’s useful and most of all- its fun! …… WF6P 81

Help for College-bound Hams<\/h3> – Apply for an amateur radio scholarship …… N8PGI 83

Dr. Nicad Battery Conditioner\/rapid Charger<\/h3> – Ramsey Electronics Model No. DN-1 …… WU0L 24

Full Rock and Roll<\/h3> – The AT-11 Automatic Antenna Tuner from LDG Electronics …… AA0XI\/vK5FN 38

Communications Simplified Part 19<\/h3> – Multiplexing and digital data …… K2OAW 64

Vintage Review: Yaesu FT-727R Dual-bander<\/h3> – Save money on an all-purpose HT …… NV7K\/6 68
\n
\n

73 Ham Radio Today Issue August 1997<\/a>
<\/h2>\n

A Free Repeater Free HTs and Some Good Ol’ PR<\/h3> – Would your employer pitch in? …… WA9PYH 10

Figuring RF Exposure<\/h3> – New standards can help avoid potential hazards …… W6YBT 16

Antennas for Amateur Television Part 2<\/h3> – See Part 1 in July’s 73 …… K0NM 17

Negative Resistance RF Pre-selector<\/h3> – An easy way to soup up that old superhet …… W2GOM\/7

Emergency Communications<\/h3> – The only salvation for ham radio? …… WB9MZL 30

At Sea About Marine Mobile Operation?<\/h3> – Weekend boater or dedicated sailor you need your radio! …… XF1\/kB6ASH 34

Board Creation Tips<\/h3> – Seven steps to beautiful PC boards …… KC5AWJ 38

Frequency and CW CQs<\/h3> – How to zero-beat your transmitter …… W6BNB 71

Keys to Days Gone By<\/h3> – Enthusiasm for the code keeps this ham’s nostalgic collection working …… Seay 76

The Killer Beam<\/h3> – Just how much is “some” assembly? …… W3UWH 81

Music From the Past<\/h3> -a distinctive fist brings back memories of a revered silent key …… K9AZG 83

The Agrelo Engineering DFjr Doppler Direction Finder<\/h3> – A fast track to T-hunting! …… K0OV 24

Sony’s ICF-sW100S<\/h3> – A micro-sized shortwave communications receiver with full-sized features …… AH2AR\/5 28

Communications Simplified Part 20<\/h3> …… K2OAW 64

Oscillator Basics Part 1<\/h3> – Some things every ham should know …… W6WTU 70
\n
\n

73 Ham Radio Today Issue September 1997<\/a>
<\/h2>\n

Video Transmitter<\/h3> – Delta -the ATV transmitter you can change to fit your needs. Three bands one design …… KC5AWJ 9

Explorers Adventurers and Experts<\/h3> – How would you rule on this? …… KB9FO 20

The New Emergency Alert System<\/h3> – Don’t tune out that emergency broadcast test just because the Cold War’s over! …… WD8DAS 30

Holiday of a Lifetime<\/h3> – Ham friends are lifelong friends -even if you’re meeting them for the first time! …… G3LDI 32

Inside MFJ’s New 969<\/h3> – The Versa Tuner II could be for you …… N0BLX 37

Secrets of the 1340<\/h3> – Inside Ten-tec’s new QRP transceiver kit …… WB8VGE 41

Communications Simplified Part 21<\/h3> …… K2OAW 64

Oscillator Circuits<\/h3> – Part two in a series of three …… W6WTU 71

The ABCs of HF Antennas<\/h3> – Beginning hams take heart! …… NZ9E 74
\n
\n

73 Ham Radio Today Issue October 1997<\/a>
<\/h2>\n

Surface Mount Devices<\/h3> – Everything you didn’t want to -but should -know …… W6WTU 10

El Cheapo<\/h3> – Rub shoulders with the big boys on 20 meters without shelling out megabucks! …… 4X1MK 15

APRS Network Guidelines<\/h3> – 20 tips for increasing efficiency …… W9IF 19

Phased Trapped Verticals for HF<\/h3> – Simple ideas simple to build …… KD7FY 21

Simple Signal Injector\/tracer<\/h3> – Troubleshooting made easy …… W4LJD 23

Where’s the Manual?<\/h3> – Tracking down those vintage gems …… K4JRB 27

Trees Are for the Birds<\/h3> – The ham’s secret weapon- PVC! …… N0BLX 31

The Silent Killer<\/h3> – Voltage anomalies: out of sight and out of mind- but very real …… NZ9E 33

SOS …SOS … Titanic!<\/h3> – Radio operators’ courage still inspires amateurs …… Garcia 41

Which Band’s Best for QRP?<\/h3> – Some are better than others for low-power operation …… W4LJD 44

Still a Great Hobby<\/h3> – Are you a ham yet? …… WF6P 71

Quick QSKer<\/h3> – Build a “full break-in” controller for your rig\/amp …… KD7FY 82

For Computer Illiterates Only<\/h3> – Take a trip through your PC …… W6BNB 84

Small Wonder Labs’ GM-30 Transceiver Kit<\/h3> – Build it for under $100! …… AC4HF 38

Communications Simplified Part 22<\/h3> …… K2OAW 64

Oscillator Circuits Part 3<\/h3> – Frequency synthesizers and you …… W6WTU 69
\n
\n

73 Ham Radio Today Issue November 1997<\/a>
<\/h2>\n

How to Design Your Own HF Antenna<\/h3> – No excuses after this …… VA3ACK 10

Readin’ Writin’ and Robotin’<\/h3> – Is your high school entered in FIRST? …… Gray 17

Our Friend Pythagoras<\/h3> – Pop quiz: Who can state the Pythagorean Theorem? …… N0BLX 19

Electronic Construction from A to Z<\/h3> – Everything you wanted to know about building stuff but were afraid to ask …… AA0XI\/vK5FN 21

The Table Topper 160-meter Loop<\/h3> – Compact low-noise -and effective …… G2BZQ 27

Colby’s Do Something Box<\/h3> – How about making a great gift gadget for grandkids? …… W7RXV 31

A Baycom-style HF PSK Modem<\/h3> – Build a packet modem from scratch …… VK4AOC VK4TN 46

Variable Current Load Bank<\/h3> – A bright idea for testing power supply parameters …… W7DE 71

EMTECH’s NW40 Transceiver Kit<\/h3> -another winner for QRP …… AC4HF 41

My Strange QSO -mysterious voices and guarded messages<\/h3> – a typical Sunday afternoon in the Midwest? …… NZ9E 64

RF Voltage and Power Meter<\/h3> – Going up? In power that is? Find out with this easy-to-build instrument …… WI5W 67

Communications Simplified Part 23<\/h3> – The series concludes …… K2OAW 81

Remembering Ivan’s “Woodpecker”<\/h3> – Or was it? …… Onymous 82
\n
\n

73 Ham Radio Today Issue December 1997<\/a>
<\/h2>\n

Distributed Capacity Folded Loop<\/h3> – This ceiling-mount antenna will really go to your head! …… W6NBC 10

How to Silverplate RF Tank Circuits<\/h3> – A simple and inexpensive process to reduce losses …… WB2CQM 18

Build Your First Kit!<\/h3> – Just follow one hams simple advice …… N0BLX 24

Limited Space Antenna<\/h3> – Short of real estate? This might help! …… HL9BK\/k2KSY 27

How to Build A Great Ham Club<\/h3> – Good advice from the PR master …… W2NSD\/1 29

Electronic Construction from A to Z Part 2<\/h3> – Everything you wanted to know about building stuff but were afraid to ask …… AA0XI\/vK5FN 31

Affordable Antenna Project for APRS<\/h3> – Build an external antenna for your GPS receiver …… N7ZEV 48

Hamtronics’ TD-5 Subaudible Tone Encoder\/decoder Ki<\/h3>t – Guaranteed success …… WB9RRT 42

We Joined the North Pole Network!<\/h3> – Radio ho ho! …… AA0OF 64

Let Your Fingers Do the Talking<\/h3> – …or wire you smiling? …… WF6P 67

Amateur Radio Maritime Mobile Nets<\/h3> – Staying in touch -and staying safe -on the briny …… WF6P 69
\n
\n

73 Ham Radio Today Issue January 1998<\/a>
<\/h2>\n

Get Active!<\/h3> – A nice amp project for building your own active antenna …… W2GOM 10

Upgrading the 209<\/h3> – Add this simple resistance meter to your MFJ antenna analyzer …… KG5CM 15

Five-band Magnetic: Loop Antenna<\/h3> – Build a loop for QRP and tune it up just right …… K2KSY\/hL9BK

Electronic Construction from A to Z Part 3<\/h3> – Everything you wanted to know about building stuff but were afraid to ask …… AA0XI\/vK5FN 22

Mount Up!<\/h3> – Try this easy cell phone-to-2m antenna conversion …… WQ3A 28

73’s DX Dynasty Award<\/h3> – Winners and countries list …… Staff 36

73’s 1997 Annual Index<\/h3> – In full glory …… Staff 41

Publish or Perish<\/h3> – There’s something in this reprinted article for every club …… N1BLH 66

SatTrack: Automatic Antenna Tracking For the Rest of Us<\/h3> – Enjoy tracking satellites even if you don’t have a trust fund …… KA0SNL 32

Marsha and Me<\/h3> – Making friends via hamming …… WF6P 64

No-honestly! I’m Not a Pirate!<\/h3> – A tale of travail from a British Novice …… 2E1DPG 70
\n
\n

73 Ham Radio Today Issue February 1998<\/a>
<\/h2>\n

Wouldn’t You Really Rather Drive A BUIC?<\/h3> – The Basic Universal Interface Circuit ties your computer to your rig. Part 1: hardware …… K8KWD 10

Tutorial and Tester for JFETs<\/h3> – Big learning from a little project …… W2GOM\/7 16

All-copper 17 Meter X-beam<\/h3> – A nearby hardware store a free afternoon …… WA2UGT 21

Preparing for the Big One<\/h3> – Don’t get caught short in a disaster! …… XF1\/kB6ASH 24

Saluting the Flag<\/h3> – Another twist to the delta loop …… W4DXV 30

Tear Apart Your Tube Supply<\/h3> – And get your glow on the go …… WB2CQM 33

Electronic Construction from A to Z<\/h3> – Conclusion: You too can be Mr. Fix-it! …… N1FN\/vK5FN 44

The Official 1997 “Never Say Die” Index<\/h3> – A three-volume reprint of Wayne’s editorials in large type is available from Radio Bookshop for $15 …… W2NSD\/1

Meet the Paddlette Micro Keyer<\/h3> – Who could imagine a knees-ier way? …… WB8VGE 37

The Price is Right<\/h3> – and Ten-tec’s 1210 T-kit is fun to put together too …… W9NUP 39

Advance Design Labs’ CodeKey<\/h3> – Put this gizmo to work for you! …… KB1UM 68

Letter from Down East<\/h3> – where at least one ham won’t clam up …… W3UWH 64

A Krystal Kludge<\/h3> – A book excerpt from The Xtal Society …… W0IZC 65

Scrounger’s Delight<\/h3> – Meet the Minnesota miser’s magmount …… N0BLX 77
\n
\n

73 Ham Radio Today Issue March 1998<\/a>
<\/h2>\n

Truckez-vous Mon Boat?<\/h3> – Ham friends to the rescue for Voyageur …… N4UAU 10

Wouldn’t You Really Rather Drive A BUIC?<\/h3> – Part 2: software for your interface circuit …… K8KWD 17

Getting High the Ham Way<\/h3> – Adventures in ATV rocketry …… KB9MRB 23

High Impedance Analog Volt\/test Meter<\/h3> – Here’s a useful gadget to build while you wait for spring! …… W6WTU 26

Amazin’ Hall Tree Vertical<\/h3> – Grab your coat and take your hat …… K5CW 30

The ZenerMeter<\/h3> – A test set for zener and other diodes …… KA4J 39

Cheap and Portable Loop<\/h3> – for 20 through 40 meters …… WV8R 43

Out of Sight Out of Mind<\/h3> – Discretion is the better part of neighborhood amity. Part 1: strategy …… WB4BNU 80

Secrets of the 224<\/h3> – Inside MFJ’s 2-mter FM Analyzer …… N0BLX 36

Automatic Morse Station IDer from Comm Spec<\/h3> – Perfect for fox hunting and repeaters …… K4CHE 46

Don’t Leave Home Without It<\/h3> – An ingenious tester for your wallet or purse …… W2UW 64

Bridge Over Troubled Watters<\/h3> – Why buy what you can build? …… N0BLX 67
\n
\n

73 Ham Radio Today Issue April 1998<\/a>
<\/h2>\n

De-Noising your PC<\/h3> – Cure the transmitter in your PC …… WA9PYH 11

Modifying Your Ramsey Transceiver Kit<\/h3> – One stop closer to the ultimate ham experience …… N0BLX 18

Out of Sight Out of Mind<\/h3> – Discretion is the better part of neighborhood amity. Part 2: Hardware …… WB4BNU 20

Techno-trouble for Know-it-alls<\/h3> – How many of these 50 questions can you answer correctly? …… WB2WIK\/6 28

Hamtronics’ CC432-5 Receive Converter Kit<\/h3> – Straight-forward building modest price …… WB9RRT 37

Joy’s “Loud Enough” Metronome Part 1<\/h3> – Another fun project from Mr. Gizmo …… W7RXV 40

Millen-dollar Replacement<\/h3> – Here’s a clever and cents-ible way to make your own quick disconnect …… W2CQM 47

Adventures in Regulation<\/h3> – How to use a fixed voltage regulator in a variable application …… W6WTU 64

How About A Kinky-interesting-sexy-sexy?<\/h3> – A scary trip -one way thankfully -down phonetics lane …… G0JOE 66

The Kelowna Kactus Home-brew Antenna<\/h3> – And we mean home-brew! …… VE7RFB 70
\n
\n

73 Ham Radio Today Issue May 1998<\/a>
<\/h2>\n

An RF sensing Alarm<\/h3> – Save your power amplifier stages …and your reputation …… VF2ZAZ 10

A Pleasant Visit to the DDS<\/h3> – Direct Digtal Synthesis is the latest technology in signal generation …… W6WTU 15

Sensitivity Training<\/h3> – Some pros and cons of increasing receiver sensitivity …… W2GOM\/7 19

Joy’s “Loud Enough” Metronome Part 2<\/h3> – Mr. Gizmo puts it all together …… W1RXV 25

The Taylor Vee 20m Antenna<\/h3> – “Anything you don’t understand must be magic!” …… WA5NPQ KB5IAY 28

Penny Pincher’s Digital Ammeter<\/h3> – Inexpensive accurate seaworthy …… N4UAU 32

WeatherWarn Goes Public<\/h3> – Build yourself a real-time weather monitoring interface. …… AG8U 43

How Safe Is Your Mobile?<\/h3> – Assuming you want to know …… W6YBT 46

Brits Get Gaussian<\/h3> – with GMSK Data Products’ high-speed packet modem …… G3LDI 40

Home-brewing Italian-style!<\/h3> – A two-element phased beam for ARDF …… IK8VWA 64

Ya Gotta Shop Around<\/h3> – Take your time do your homework and get the best deal! …… K5LAD 66
\n
\n

73 Ham Radio Today Issue June 1998<\/a>
<\/h2>\n

A Pentium-style Positive and Negative PS<\/h3> – Reading about new technology is great but using it is even better! …… N4UAU 10

The Fun Radio<\/h3> – or wasn’t this what attracted you to the hobby in the first place? …… W6WTU 17

Meet the Marvelous MicroVert<\/h3> – A 20-inch vertical for 20 meters? …… W4DXV 21

Home-brew This Power Cube<\/h3> – First step in rebuilding your vintage RF deck …… W2CQM 25

Techno-trouble II<\/h3> – All right let’s see how you do with these …… WB2WIK\/6 29

A Hamfest Every Day<\/h3> – The fun never stops! …… W2BLC 40

In Search of a Simple Phone Patch<\/h3> – But who needs one anyway? …… KD6ORG 43

Get Kids Involved -and Keep ‘Em That Way!<\/h3> – Lessons from the “22 Crew” …… WB2JKJ 46

Yaesu’s VX-1R Micro Dual-band HT<\/h3> – Pluses and minuses big and little-er tiny …… KB1UM 32

Tips from a QSL Guru<\/h3> – Here’s how to make your card count …… W6BNB 64

Roamin’ Romania<\/h3> – Part 1: Timisoara home of the revolution …… WB2AQC 67
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\n

73 Ham Radio Today Issue July 1998<\/a>
<\/h2>\n

Raising the RASER to New Heights<\/h3> – A two-element beam for 80 meters …… W2OZH 10

Build This Simple CW Identifier<\/h3> – You too can program EPROMs …… KA2CWL K2MQJ 15

FM Revisited<\/h3> – Secrets of stuff you thought you knew …… W6WTU 21

Vintage Values<\/h3> – Heading for a hamfest? Tempted by the timeless? …… W2BLC 25

Home-brew RF Ammeter for the Shack<\/h3> – Another fun project from W4LJD …… W4LJD 29

Take the Jekyll and Hyde Test<\/h3> – Which shack is yours? …… W2CQM 34

Mega-mini Mlcropower Timeout Switch<\/h3> – Here’s a great excuse to play with SMT …… N4UAU 42

A Look At Pasokon’s 3.1 SSTV System<\/h3> – Today’s slow-scan gets better and easier…… K1BUM 31

The Shelby Hamfest<\/h3> – What are you doing the weekend before Labor Day? …… KA4J 64

Roamin’ Romania<\/h3> – Part 2: Amateurs of the Jiu Valley …… WB2ACQ 65
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\n

73 Ham Radio Today Issue August 1998<\/a>
<\/h2>\n

A Silk Purse…<\/h3> – Easy upgrades for Heathkit’s SB-104 transceiver …… K9ARF 10

Power to the People!<\/h3> – To hams who build this tuned input network that is …… W2CQM 14

Secrets of Deviant Behavior<\/h3> – Measuring FM deviation need not be a mystery …… W6WTU 18

Only One Antenna<\/h3> – All about multibands …… W2BLC 21

Cool It!<\/h3> – Cold facts about the hot topic of heat transfer …… W2GOM\/7 24

Intro to Superhets<\/h3> – Part 1: History and overview …… W6WTU 38

Experimenter’s Power Panel<\/h3> – Reduce the hassle (and the risks) of haywiring- and encourage exploration in electronics …… K4GOK 44

An FET Probe to MMIC<\/h3> – How about some (well relatively) new technology for your test bench? …… W6WTU 48

Look Ma -No Knobs!<\/h3> – Exploring the revolutionary new Kachina 505DSP computer-controlled HF transceiver …… N1VXW 27

Whiterook’s Model MK-88 Pocket Electronic Keyer<\/h3> – If CW is for you check out this keyer …… AD1B 42

Determining Antenna Feedpoint Impedance<\/h3> – Even you can learn from this tutorial …… W6WTU 64

In search of a Simple Capacitor Tester<\/h3> – A midsummer night’s dream project …… KD6ORG 68
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\n

73 Ham Radio Today Issue September 1998<\/a>
<\/h2>\n

The Ultimate Green Radio<\/h3> – great “Beginners Night” project! …… W7DE 10

What’s the Scoop on the Lazy Loop?<\/h3> – Here’s how multi-band wire antennas measured up in real-world comparisons …… WA2UGT 16

Intro to Superhets<\/h3> – Part 2: From oscillators to detectors …… W5WTU 22

Building the NHRC-4 Linking Repeater Controller<\/h3> – And get with the program …… N1KDO KA1OKQ N1LTL 28

Multibanding the Fracvert Half-wave<\/h3> – Here’s a wire vertical with surprising performance on 40-10m …… N1IR 56
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\n

73 Ham Radio Today Issue October 1998<\/a>
<\/h2>\n

The Ins and Outs of Surface-mount<\/h3> – Everything you need to know to get started or get better …… Davidson 10

The Ideal Log?<\/h3> – This computer-style card file may be for you …… W6BNB 21

Intro to Superhets<\/h3> – Part 3: Accessories and conclusion …… W6WTU 26

G’Day OM!<\/h3> – On the road with the first-ever all-ham RV tour of Australia and New Zealand …… N5MFG 30

Meeting Your Match<\/h3> – The fine points of understanding matching networks …… W2GOM\/7

The Perfect Field Day<\/h3> – Did everybody have fun? …… N8IDA 54

What is a Linear Amplifier Saver?<\/h3> – Why it’s the MFJ-214 of course! …… NZ9E 18

Just the TiCK Kit<\/h3> – Embedded Researher’s memory keyer is now available with beacon mode …… K4CHE 33
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\n

73 Ham Radio Today Issue November 1998<\/a>
<\/h2>\n

Build the Fox TTL Foxhunt Transmitter<\/h3> – Simple inexpensive and the end of your excuses for not trying T-hunting …… AH2AR\/8 10

The Evolution of Power Supplies<\/h3> – Part 1: dynamotors and vibrators …… W6WTU 13

Surface Mount SW RF Booster<\/h3> – Easy-to-build design plus high-pass filter to boot …… Davidson 16

VHF\/uHF Signal Source<\/h3> – There’s always room for another piece of test equipment! …… W6WTU 21

And the (Zero) Beat Goes On…<\/h3> – More on the Fessenden Fenomenon …… VE3MJF 29

George’s XE-ient Adventure<\/h3> – Part 1: Days 1-9 …… WB2AQC 34

Already Have an Oscilloscope?<\/h3> – You won’t find a cheaper add-on capacitor tester …… N4MCZ 57

Hamtronics’ R301 Synthesized VHF Receiver<\/h3> – For foxhunting even …… WB9RRT 26
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\n

73 Ham Radio Today Issue December 1998<\/a>
<\/h2>\n

Probing Auto Electronics<\/h3> – Help your neighbor identify his car’s problem and be an electronic’s hero! …… W6WTU 10

Announcing the QRPeanut<\/h3> – Here’s a compact QRP transmatch you can build for next to nothing …… N5GZH 14

Keys to Better Operating<\/h3> – Yes much of it is common sense …… W6BNB 17

Electronic Bug Emulator<\/h3> – Put some personality back into your CW …… W4LJD 27

Low-voltage Detector<\/h3> – for a number of uses …… W6WTU 31

George’s XE-ient Adventure<\/h3> – Part 2: Days 10-18 …… WB2AQC 32

A Real Handful<\/h3> – Inside Alinco’s DJ-cS dual-band transceiver …… VE3EGA 24

Seeing Dits and Dahs<\/h3> – The K2659 Morse Decoder Kit from Velleman Electronics …… N1FN 29

The Drake TR Series: No Introduction Needed<\/h3> – but here’s the skinny on some of the best vintage equipment available today …… W2BLC 52
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73 Ham Radio Today Issue January 1999<\/a>
<\/h2>\n

Home-brew a Customized HF Amplifier<\/h3> – Visualize contrive create! …… WI5W 10

3 Ls 4 2m<\/h3> – This three-element stubfed coaxial vertical is dirt cheap sturdy and very effective …… WD4KMP 18

The Evolution of Power Supplies<\/h3> – Part 2: Switching techniques …… W6WTU 21

From the Ukraine: A Radio Amateur’s Story<\/h3> – Behind the Iron Curtain home-brewing was the mother of invention …… UY5DJ 24

Here Comes the Sun<\/h3> – Part 1: Cycle 23 and you …… WA8YKN 28

73’s DX Dynasty Award List<\/h3> …… Staff 34

73’s 1998 Annual Index<\/h3> …… Staff 36
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73 Ham Radio Today Issue February 1999<\/a>
<\/h2>\n

We Must Be Dreaming<\/h3> – A home-brew receiver project! …… Duncan 10

LM- and BC-221 Frequency Multiplier<\/h3> – Generate detectable signals up to 1000 MHz …… W6WTU 17

The Ultra-simple 20 <\/h3>– The simplest solution to any problem is the best …… G2BZQ 21

The Franklin VFO<\/h3> – A nifty chill-chasing project for the serious home-brewer …… W4LJD 24

Mods for the OHR 100A<\/h3> – Here’s how to make a popular QRP rig even better …… W4LJD 30

Here Comes the Sun<\/h3> – Part 2: Geomagnetic monitoring …… WA8YKN 34

Easy Antenna Reference<\/h3> – Quick basics for a quick decision …… VK2AT 52

Tracking Dual-voltage Power Supply<\/h3> – Build something handy while you wait for the year’s first hamfest! …… W6WTU 55

The IC-706MKII Shack-in-a-box<\/h3> – Take another look at an increasingly popular rig …… W2BLC 23
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73 Ham Radio Today Issue March 1999<\/a>
<\/h2>\n

The Pluck of the Irish<\/h3> – Was Wee Mac a leprechaun or a pirate-or both? …… K9AZG 10

Transmitting Ferrite Loop for 80\/160<\/h3> – Thirty years of experimenting …now it’s your turn! …… G2BZQ 14

Signals From the Ice: Now That’s Really Cool!<\/h3> – Here’s what happens when hams meet Alaska’s Matanuska Glacier …… KL7JR 20

Anti-metric?<\/h3> – You already use it more than you think! …… WD0GCK 23

Everyman’s Guide to Active Filter Design<\/h3> – Now you know …… KC3ZQ 26

Keys to Good Code<\/h3> – Unlocking the secrets of sending precise Morse code …… W6BNB 31

Enjoy CW Rag-chewing<\/h3> – Some pointers for good -and fun -communicating …… W6BNB 55

QRP Temptations<\/h3> – Here’s a roundup of low-power kits out there today …… W3DX 37
\n
\n

73 Ham Radio Today Issue May 1999<\/a>
<\/h2>\n

The Card-file 40<\/h3> – Here’s a direct-conversion QRP transceiver you can build …… KC3ZQ 10

The EZ-bZ Deck Antenna<\/h3> – A compact 20-meter dipole with linear loading and a bend …… AB2BZ 16

Home-brewing a 3 kW+ Dummy Load<\/h3> – Corral some Cantennas to check out your big gun amplifier …… W2CQM 22

Networking with Thevenin and Kirchhoff<\/h3> – Helpful friends when you go into analysis …… W2GOM\/7 30

Tri-band Vertical Array for Big 120 degree Bandwidth Signal<\/h3> – (Or what to do with the trap beam pieces parts in the basement) …… WZ8A 33

Our Exciting New Fox<\/h3> – How one club settled on the Hamtronics T301 …… WB9RRT 20
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73 Ham Radio Today Issue June 1999<\/a>
<\/h2>\n

Regens for the Millennium<\/h3> – Part 1: A new look at an old friend …… KA9GDL 10

Three-element Circular Quad for 10m<\/h3> – For under $65! …… K8IHQ 17

From the Ukraine: A Radio Amateur’s Story<\/h3> – Part 2: Water-cooled amp? Why not? …… UY5DJ 21

Easy Antenna Reference<\/h3> – Part 2: More options …… VK2AT 26

Screwy Mobile Antenna Mods<\/h3> – Fine-tune that screwdriver-type with these helpful tips …… WB4RNO 28

Operating Crystals on the Fifth Overtone<\/h3> – Sounds kinda New Age but it’s something an hams should know …… N2DCH 30

My Old Kentucky (Satellite) Home<\/h3> – where lofty aspirations met some down-to-earth concerns …… KA9SOF 33

Telescoping PVC Mast<\/h3> – Getting it up in awkward places …… KB7WOS 35

Euthanasia Keyer Project<\/h3> – Quick and painless …… KC3ZQ 37
\n
\n

73 Ham Radio Today Issue July 1999<\/a>
<\/h2>\n

Emergency Power for Hams<\/h3> – Including your own experimental wind generator …… WA8YKN 10

The VK Winged Flapper<\/h3> – Only an Aussie would come up with this mobile antenna design …… VK2AT 20

Regens for the Millennium<\/h3> – Part 2: Winding Coils …… KA9GDL 22

You Too Can Be an SOB<\/h3> – Hams should be heard but not seen- put your left hand on the Callbook and repeat after me …… K9AZG 27

The Amazing Wiebelfeltzer<\/h3> – This CW filter is semi-analog quasi-digitial and weirdo-nomic …… K8MKB 31

It’s Senior Spider vs. Y2K!<\/h3> – Build this QRP rig now- just in case …… WA8TXT 34

Long Beach Longwire<\/h3> – You’re really “on the air” with this beach kite antenna …… WB6MEU 39

The Ten-tec 1254<\/h3> – Fifteen programmable memories enhance this microprocessor-controlled receiver …… WB8VGE 28
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\n

73 Ham Radio Today Issue August 1999<\/a>
<\/h2>\n

PIC-based DTMF Project<\/h3> – Build this decoder and learn …… KC3XM 10

How to Turn a Deaf Ear<\/h3> – with your antenna …… VK2AT 13

Secrets of Transmission Lines<\/h3> – Part 1: Intro and dummy load project …… KE2QJ 16

Kiwi SSTV<\/h3> – How they do it in ZL-iand …… ZL1AAN 20

All About Op Amps<\/h3> – And then some …… W2GOM\/7 24

The Missing Link: A PSK Interface<\/h3> – Stop just reading about it – put this new mode into action! …… WA8TXT 27

Radio Fun in the Sun<\/h3> – Here’s a complete solar-powered QRP station for your operating pleasure …… W7DE 30

Instruction Instructions<\/h3> – Discover hidden savings in the last place you’d ever look -the instruction manual …… N6HYK 35

Ham Station Control and Monitor<\/h3> – You can do without this handy project- or can you? …… W4LJD 39

Bend and Brake!<\/h3> – Customize your homebrew projects with tailor-made enclosures-and lots more! …… W7DE 34
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\n

73 Ham Radio Today Issue September 1999<\/a>
<\/h2>\n

PIC Key PIC Key<\/h3> – This simple CW keyer is a great way to learn about PICs …… UY5DJ 10

Y2K Portable J-pole<\/h3> – What emergency will you need to handle? …… WA8TXT 16

Defogging Microstrips<\/h3> – An intro to microstripline filters …… WA9PYH 19

Secrets of Transmission Lines<\/h3> – Part 2: Review of AC fundamentals …… KE2QJ 26

Getting Your Foot in the Public Service Door<\/h3> – Here’s how to get your club invoIved -and appreciated …… KN4HL 30

Simple RF Signal Generator<\/h3> – Add this handy piece of test gear to your bench …… W4LJD 32

Simple Direct-conversion Receiver<\/h3> – For QRPers and receiver aficionados in general …… Sellen 38
\n
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73 Ham Radio Today Issue October 1999<\/a>
<\/h2>\n

Need a UHF Dipper?<\/h3> – Part 1: Old TV tuners to the rescue! …… W6WTU 10

HT Porta-power<\/h3> – Project Portable extended power pkg for HTs …… WB3CEH 15

FM CW!<\/h3> – Repeater code-practice sessions …… WB9YBM 16

FYI: FQY<\/h3> – Another look at the Fractal Quad Yagi …… KF7BS 18

Secrets of Transmission Lines<\/h3> – Part 3: More AC review …… KE2QJ 22

The History of Ham Radio<\/h3> – Parts 1 and 2: From the birth of the wireless ages to 1920 …… W9CI 31

The Digital Port<\/h3> – PSK31 gets even better …… KB7NO 43

Above & Beyond<\/h3> – The Internet a new frontier …… WB6IGP 45

On the Go<\/h3> – Even more Y2K …… KE8YN\/4 53
\n
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73 Ham Radio Today Issue November 1999<\/a>
<\/h2>\n

Need a UHF Dipper?<\/h3> – Part 2: Coupling to an outside environment …… W6WTU 10

Planning a DXpedition<\/h3> – Here’s what to do if you take Wayne’s advice …… W4DC 14

Why No Beta-morse?<\/h3> – An amusing way to preserve your Morse code …… VE2MHZ 18

Building a Better Collins<\/h3> – Add this $1 solid state replacement part to your 30S1 …… W2CQM 19

Isotron Notes<\/h3> – Simple tips straight from the Hart …… AD1B 24

Basic Transceiver Tester<\/h3> – This fancy spin on some common components is a good beginner’s project …… WB9YBM 26

Your Batteries Ready for Y2K?<\/h3> – Electrifying tidbts even you old-timers don’t know …… N7MGT 28

No Bum Steer<\/h3> – Maximize your loop’s performance the easy way …… W6US 35

Secrets of Transmission Lines<\/h3> – Part 4: Traveling waves and some thought experiments …… KE2QJ 37

The History of Ham Radio<\/h3> – Part 3: 1920-21 …… W9CI 41

A Big Look at Small Wonders’ WM-20<\/h3> – This SSB transceiver kit is fun to build and works well …… AC4HF 32
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73 Ham Radio Today Issue December 1999<\/a>
<\/h2>\n

The X(Mas)-files<\/h3> …… Staff 6

Big-time Bench Supply<\/h3> – This highly regulated SCR design might be overkill but it’s still fun to build …… Sellen 10

Secret Death Ray<\/h3> – Or is HAARP a useful science tool? …… N7MGT 14

TV Tutor<\/h3> – How to get started in SSTV …… ZL1AAN 22

Why Not Renew On-line?<\/h3> – Here’s how to untangle the FCC Web …… AC3L 24

Read All About It!<\/h3> – Part 1 of Techno-trivia from The Hertzian Herald …… K8JWR 26

A Cold Meal and a Hot Radio<\/h3> – That’s what this XYL’s OM now comes home to …… AD4EX 30

Secrets of Transmission Lines<\/h3> – Part 5: Impedance and reflections including a “kitchen table” experiment …… KE2QJ 31

Need a UHF Dipper?<\/h3> – Part 3: Mods for using the tuner as a dipper …… W6WTU 35

1999 Annual Index<\/h3> …… 54
\n
\n

73 Ham Radio Today Issue January\/feb 2000<\/a>
<\/h2>\n

New Millennium Wish List<\/h3> – A budget-conscious guide to exploring new amateur radio horizons …… K4TWJ 10

Buffalo Springs Lake Half-ironman Triathlon<\/h3> – Ham PR at its best …… KC5VKB 14

Junk Box Audio Test Generator<\/h3> – This scavenged helper is easy to build and fun to use …… Sellen 22

Read All About It!<\/h3> – Part 2 of good stuff from The Hertzian Herald …… K8JWR 26

73’s DX Dynasty Award Winners<\/h3> …… Staff 29

Secrets of Transmission Lines<\/h3> – Part 6: The Smith Chart …… KE2QJ 31

Inside Alinco’s DR-m03<\/h3> – This 10m transceiver is right for everybody …… KE2QJ 18
\n
\n

73 Ham Radio Today Issue March 2000<\/a>
<\/h2>\n

The Quest for Super Sounding Audio<\/h3> – How to improve your on-the-air image by 10 dB …… K4TWJ 10

Salvage Special: TV\/vCR Tuner Receiver<\/h3> – Watch the neighbor’s curb for an old VCR! …… W6WTU 16

The Care and Feeding of NiCds<\/h3> – Some clever tips for long life plus a neat home-brew charger …… K9TRG 21

Secrets of Transmission Lines<\/h3> – Part 7: Impedance matching …… KE2QJ 23

The DX Partyline low Noise Wavecatcher<\/h3> – Here’s a great noise reduction loop for SWLing …… N6NR 30
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\n

73 Ham Radio Today Issue April 2000<\/a>
<\/h2>\n

Morse Code -the Once and Future Mode<\/h3> – Will you outlive it -or vice versa? …… N1FN 10

The Long-lost Art of Conversational CW<\/h3> – Banging away for long chats can be fun -if you know what to say …… WF6P 18

Make Copies of This Article<\/h3> – Then drop them off at your local school(s) …… W8DYF 20

The Finger<\/h3> – Here’s a positive way to respond when someone gives it to you …… K9AZG 22

Try a Sensor Keyer<\/h3> – For almost pressure -free CW …… WB4TED 28

Vaya Can (Ra)Dios<\/h3> – The radio amateurs of Spain -part 1: Catalonia …… WB2AQC 30

Frequency Charts<\/h3> – A gift from Alinco and 73 Magazine …… Staff 32

More on Embedded TICKS<\/h3> – Here’s an update on those tiny CMOS keyers …… AC4HF 21
\n
\n

73 Ham Radio Today Issue May 2000<\/a>
<\/h2>\n

When Less is More<\/h3> – Check out the excitement of QRP …… N1FN 10

Build and Compare<\/h3> – Learn about receivers from these two simple designs …… KG4CUY 18

Read All About It!<\/h3> – Part 3 of good stuff from The Hertzian Herald …… K8JWR 27

You’re So Vain<\/h3> – You probably think this article is about you …… AC3L 36

Exploring the Kenwood TM-d700A<\/h3> – Part 1.. Overview and installation …… KE8YN\/4 14

QRP with the OHR 500<\/h3> – Missed out on building an HW-9? Here ‘s the next best thing …… AB0CD 23

Wattmeter Winner<\/h3> – 73 reviews LDG’s OWM-4 digital wattmeter kit …… AC4HF 30

Another look at the NW-40<\/h3> – EMTECH’s QRP transceiver kit proves a winner …… K4CHE 38
\n
\n

73 Ham Radio Today Issue June 2000<\/a>
<\/h2>\n

Ah the Technomadic life!<\/h3> – This special to 73 on mobiling is… well… special …… N4RVE 10

Electronics Bench for Dummies<\/h3> – And it doesn’t take an Einstein to know how important a good bench -like this one -really is …… N2XS 18

Tuner King Strikes Again<\/h3> – Part 1: Make a basic VHF\/uHF signal source from your TV\/vCR tuner …… W6WTU 24

Well Not Exactly<\/h3> – Some of the finer points about using your O’scope …… K5CW 28

Straight Talk about ClearSpeech<\/h3> – This Am-corn speaker gets a “B” from the reviewer but also gets kept …… AA6JR 31

Exploring the Kenwood TM-d700A<\/h3> – Part 2: A rig for all seasons …… KE8YN\/4 38
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\n

73 Ham Radio Today Issue July 2000<\/a>
<\/h2>\n

The Universal Loop<\/h3> – A novel efficient. modularly constructed receiving loop antenna covering from 55 kHz to 40 MHz (or even more) …… G2BZQ 10

String Up the GPU 80<\/h3> – This compact antenna could be part of your clandestiny …… G2BZQ 14

Return of the Amazin’ Hall Tree Vertical<\/h3> – This time for 40\/30 …… K5CW 18

Twinleads To Go<\/h3> – Keep these emergency antennas for 2m and 70cm in your glovebox …… W4JC 20

The Hybrid Vee<\/h3> – Revisit the original Taylor Vee -and improve it …… KB5IAY W1XU\/7 22

Tuner King Strikes Again -part 2<\/h3> – Make a basic VHF\/uHF signal source from your TV\/vCR tuner …… W6WTU 24

The Rocky Road to a Great Radio Club<\/h3> – An interview with Jeff Seligman WA2VNT\/7 …… WA6ITF 29

When They Say Multiband They Mean It!<\/h3> – 73 reviews the Comet CA-uHV antenna …… KE8YN\/4 34
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\n

73 Ham Radio Today Issue August 2000<\/a>
<\/h2>\n

Really PIC Key PIC Key<\/h3> – Add memory functions to your PIC Keyer project …… UY5DJ 10

10m Junk Box Amp<\/h3> – More tube-type fun! …… K4CRS 16

Vaya Con (Ra)Dios<\/h3> – The radio amateurs of Spain – part 2: Mallorca and a side trip to the Principality of Andorra …… WB2AQC 19

Cold Fusion Hot Speculation<\/h3> – OK experimenters get ready to do this on your kitchen table …… W6HDM 28

For the Above and Beyond Crowd<\/h3> – Here’s a neat RF modulator\/detector for use with surplus microwave SWR meters …… WA4WDL 30

A QRO Rig in a QRP Car<\/h3> – IC-706 meet Chevy Metro …… WB8VGE 38

Time on My Hands<\/h3> – And things to do with it – like write articles …… W4PGI 57

A Good Look at WinAPRS<\/h3> – Mark Sprout’s shareware program brings a new dimension to cutting-edge fun …… KE8YN\/4 34
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\n

73 Ham Radio Today Issue September 2000<\/a>
<\/h2>\n

The Cap’n Crunch LOWFER Loop<\/h3> – This lightweight longwave antenna could become a classic …… G2BZQ 10

Generating SSB<\/h3> – Use this tutorial to better understand -or better build -your next project …… W2GOM\/7 13

Ham Ambassadors<\/h3> – Will you help capture the would-be hams that could slip away? …… WB6NOA 19

School’s In!<\/h3> – Go on a “lecture circuit” to the local school – and promote your favorite technical hobby …… WA9PYH 24

Adopt a School<\/h3> – More good tips on introducing the ARS …… N7MGT 28

Read All About It!<\/h3> – Part 4 of good stuff from The Hertzian Herald …… K8JWR 30

Try This Tube-type FM Transmitter<\/h3> – That’s FM as in broadcast radio …… Sellen 34

Inside Digital TVNCR Tuners<\/h3> – Part 1: How to make them work …… W6WTU 54

Windshield Auto-wiper<\/h3> – This gadget provides an interesting approach to an old challenge …… Sellen 57

Up on a Down Under Kit<\/h3> – The DSE K-7204 ESR\/low ohms meter measures well on the 73 review-o-meter …… W4QBU 37
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73 Ham Radio Today Issue October 2000<\/a>
<\/h2>\n

With Fingers Crossed<\/h3> – The latest on Phase 3-d …… G3RWL 10

Low-cost P3D Antenna Setup<\/h3> – These three antennas are perfect for everybody …… K5OE 17

Cruising for Satellites<\/h3> – If you can get away with it this is the best of both worlds …… W5ACM 22

From Russia With Satellite<\/h3> – “The name is Brown Jerry Brown” …… 27

Inside Digital TV\/vCR Tuners<\/h3> – Part 2: Data transmitter for testing …… W6WTU 30

OSCAR-10 Antenna System<\/h3> – A look at the high end of the antenna spectrum …… K6CCC 36

Satellite Gateways<\/h3> – Time you tried one? …… G3LDI 38

Microwave P3D<\/h3> – Here’s all you need to know …… GM4PLM 54
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73 Ham Radio Today Issue November 2000<\/a>
<\/h2>\n

Build This IP3 Test Set<\/h3> – A receiver’s third order input intercept point is more than just a mouthful …… N2DCH 10

Inside Digital TV\/vCR Tuners<\/h3> – Part 3: Data receiver for testing …… W6WTU 16

A BFO for Your SW Rx<\/h3> – With a $10 Ten-tec kit …… W4PGI 22

Super-simple 80m Fox<\/h3> – Build this easy and inexpensive QRP rig perfect for dual-band foxboxes …… K0OV 24

You Can Build the FoxFinder 80!<\/h3> – Here’s how to get started in the exciting world of 3.5 MHz ARDF …… WB8WFK 29

Add-on Digital Voltmeter<\/h3> – Strictly for those who love to build it themselves …… KA8PHO 53

Simple P.S. Add-one<\/h3> – Enhance your next power supply project with an overvoltage protector and a smart LED output level indicator …… Specht 55

73 Tests the Drake SW1 Receiver<\/h3> – Contact your dealer now to get one while you can …… W4PGI 20
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73 Ham Radio Today Issue December 2000<\/a>
<\/h2>\n

Announcing the Yingling ET-1<\/h3> – A new QRP classic …… W2UW 10

More than a Modem Monitor<\/h3> – Another great project …… W7RXV 16

Inside Digital TV\/vCR Tuners<\/h3> – Part 4: Testing and binary data format …… W7RXV 16

Skinflint Lightning Arrestors<\/h3> – Great protection on the cheap …… K8IHQ 30

Angel Voices<\/h3> – An unusual beam tuning experience …… KC6JGS 35

Introducting the Perfective 1<\/h3> – This noninvasive current meter features a clever circuit that you can build …… Laughlin 37

The Digital Port<\/h3> – More New Freeware! …… KB7NO 44

The DX Forum<\/h3> – DX4WIN Has PSK31 Functionality …… N6NR 47

On the Go<\/h3> – HR Responds to a Real Emergency! …… KE8YN\/4 53

Announcing the Yingling ET-1<\/h3> – A new QRP classic …… W2UW 10

Homing In<\/h3> – T-hunting by the Bay …… K0OV 54
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73 Ham Radio Today Issue January 2001<\/a>
<\/h2>\n

SV8 from the Geranium<\/h3> – Mykonos is a great DXpedition – once you get there …… G3SWH 10

Inside Digital TV\/vCR Tuners<\/h3> – Part 5: Decimal-to-binary conversion program …… W6WTU 14

Transistor Bias: The Secret Story<\/h3> – Shore up some of your shaky transistor theory by taking this tutorial …… W2GOM\/7 18

ATV 23cm FM Receiver<\/h3> – Kiwi TV- Part 1: New Zealand-style …… ZL1AAN 23

ATV Exciter<\/h3> – Kiwi TV -part 2: Latest addition to the Kiwi 23cm project …… ZL1AAN 26

Vaya Con (Ra)Dios<\/h3> – The radio amateurs of Spain -part 3: Madrid and Valencia …… WB2AQC 29

2000 Annual Index<\/h3> …… 39
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73 Ham Radio Today Issue February 2001<\/a>
<\/h2>\n

Way Cool Rocket Project Part 1<\/h3> – This 70cm rocketborne radio telemetry system is strictly for kids -Not! …… N4XVF 10

All About Class D Amplifiers<\/h3> – What you do know can’t hurt you …… W2GOM\/7 18

Portable Personal Repeater<\/h3> – Handy inexpensive and fun! …… WB6IQN 23

Inside Digital TV\/vCR Tuners<\/h3> – Part 6: Making your own PC boards …… W6WTU 25

Crystal Oven Controller<\/h3> – Build this solid state regulator for your oscillator oven assembly… OK it’s not for everybody! …… WA4WDL 32

Need a Noise Blanker?<\/h3> – This impulse noise suppressor can be added to any SWL ham or CB receiver …… Sellen 35

Beginner’s Battery Charger<\/h3> – A simple project to get you going …… W2GOM\/7 38
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73 Ham Radio Today Issue March 2001<\/a>
<\/h2>\n

Way Cool Rocket Project: Part 2<\/h3> – This 70cm rocketborne radio telemetry system is strictly for kids -Not! …… N4XVF 10

Build Yourself an NVIS<\/h3> – If you want to talk to the guy in the next county on HF of course …… VE2EQL 18

Inside Digital TV\/vCR Tuners<\/h3> – Part 7: Conclusion …… W6WTU 19

Build This Variable AC Bench Supply<\/h3> – If you can find a Variac transformer that is …… K8IHQ 23

$5 Infrared Remote Tester<\/h3> – Build this and look like a hero …… WA9PYH 26

QRP Drives Ham Nuts<\/h3> – Buys “critical mass” of parts and then goes on bizarre building spree …… NY9D 28

Bookbind This! -part 1<\/h3> – Get organized and save money too …… W6WTU 31

Guessless Beam Pointing<\/h3> – This has been around for years but for you newcomers …… W9PJF 34

The History of Ham Radio<\/h3> – Part 4: The early 1920s …… W9CI 53

Read All About It!<\/h3> – Part 5 of good stuff from The Hertzian Herald …… K8JWR 56
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73 Ham Radio Today Issue April 2001<\/a>
<\/h2>\n

Sabah -land Below the Wind<\/h3> – Come along on this DXpedition to 9M6 …… G3SWH 10

Arachnida Warcum<\/h3> – Whatever you calf it this WARC bands spider species is a tri-band delta loop well worth trying …… VE3XI 16

Way Cool Rocket Project<\/h3> – Conclusion – This 70cm rocketborne radio telemetry system is strictly for kids -Not! …… N4XVF 18

Disaster Overkill<\/h3> – Say what you want about this ham’s response to emergency preparedness -until you need him that is …… KL0XK 23

Bookbind This!<\/h3> – Part 2 -get organized and save money too …… W6WTU 29

Read All About It!<\/h3> – Part 6 of good stuff from The Hertzian Herald …… K8JWR 32

The History of Ham Radio<\/h3> – Part 5: The first convention …… W9CI 36
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73 Ham Radio Today Issue May 2001<\/a>
<\/h2>\n

Modular Remote Coax Switch<\/h3> – Build this handy device to save time money and XYL yelling …… K8IHQ 10

“How High’s the Water Mama?”<\/h3> – The story of a packet public service project flooded with success …… KC7IZH 16

Bookbind This! -conclusion<\/h3> – Get organized and save money too …… W6WTU 32

Preventive Brain Surgery for Icom Xcvrs<\/h3> – Trying to resurrect a comatose Icom transceiver can be bad news. Here’s how to prevent a dreadful fate in the first place …… KI4RK 40

Kenwood’s Hot New TS-2000<\/h3> – Could you handle all these features? …… N6NR 23

Air Hamtronics<\/h3> – If you’re a pilot this aviation receiver should be in your flight plan …… N6NR 44
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73 Ham Radio Today Issue June 2001<\/a>
<\/h2>\n

EZ-build Pre-selector<\/h3> – Use a tuning cap from an old broadcast receiver …… N2DCH 10

Bring Back the Magic!<\/h3> – Is this guy living in a dream world? You tell Us …… G3LDI 20

Read All About It!<\/h3> – Part 7 of good stuff from The Hertaian Herald …… K8JWR 24

The History of Ham Radio<\/h3> – Part 6: Across the Atlantic …… W9CI SK 28

Field Day 2000 with the Xerox ARC<\/h3> – Where every signal was -ahem! -easy to copy? ……W6WTU 32

Field Day Follies<\/h3> – Wherein some Yankee teas and some Zulus use an x-ray machine to bust up an old man’s still- or something like that …… K8JWR 35

Radio Brat<\/h3> – A life in uniform has meant a world of contacts for this devoted op …… W2GOM\/7 36

Hamfest Loser<\/h3> – When you put your money in your shoe anything can start to happen …… K8JWR 52

Morse Code Decoder Chart<\/h3> – Not for taking the test …… Byers 54

Kenwood’s Hot New TS-2000 -part 2<\/h3> – Could You handle all these features? …… N6NR 13

Up-‘n’-at-’em Stealth Vertical<\/h3> – The Outreach 500 was the perfect solution for this ham …… WB3CEH 18
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73 Ham Radio Today Issue July 2001<\/a>
<\/h2>\n

The Antenna That Never Was<\/h3> – and the 4S7WHG DXpedition that Almost followed suit …… G3SWH 10

Power Supplies Explained<\/h3> – The esoteric facts …… W2G0M\/7 16

QRP Asylum Update<\/h3> – The latest from our build-crazy ham …… NY9D 23

Your Long-lost Transistor Notebook<\/h3> – Part 1 of 4 …… W6WTU 27

Read All About It!<\/h3> – Part 8 of good stuff from The Hertzian Herald …… K8JWR

The History of Ham Radio<\/h3> – Paris 7 and 8: Broadcast radio and the early ’20s …… W9CI 50

Thumbs Up for ROTOR-eZ<\/h3> – This handy add-on fits inside your control box …… K5LAD 31
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73 Ham Radio Today Issue August 2001<\/a>
<\/h2>\n

Amazon Death Flight<\/h3> – When these missionaries -and hams- were shot down the official apology was too little too late …… W8NXD 10

“CQ ET!”<\/h3> – The UFO Watchtower DXpedition …… WA3QLW 12

The Wall-wart Bible<\/h3> – Say “Amen!” to this treatise on troubleshooting these ubiquitous supplies …… KJ4W 14

Return of the Wavemeter<\/h3> – Nostalgia? Fun project? Or both? …… W6WTU 19

Your Long-lost Transistor Notebook<\/h3> – Part 2 of 4 …… W6WTU 24

“Back later today dear. I’ll be at tomorrow’s hamfest in Australia…”<\/h3> …… VK3CQE VK3LM & W8ZCF 29

Read All About It!<\/h3> – Part 9 of good stuff from The Hertzian Herald …… K8JWR 32

The History of Ham Radio<\/h3> – Parts 9 and 10: Portable and mobile. more experimenting …… W9CI 50

Surplus: Easy Setup Portable HF Antenna<\/h3> – The Telex 1990 – aka AS-2259 man-pack antenna -can be a treat for amateurs …… VE2EQL 27
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73 Ham Radio Today Issue September 2001<\/a>
<\/h2>\n

The Cheapest Supplies Ever<\/h3> – Why not put a surplus computer PS to work in your shack? …… W6WTU 10

Your Long-lost Transistor Notebook<\/h3> – Part 3 of 4 …… W6WTU 14

Movable Microphone Boom<\/h3> – Why not operate like a pro?! …… W4DXV 20

Read All About It!<\/h3> – Part 10 of good stuff from The Hertzian Herald …… K8JWR 22

Build This Narrowband Tunable Filter for Receiving PSK31 Signals<\/h3> – or at least think about it …… N2DCH 24

One More Hospital Test<\/h3> – This time you play doctor …… N8SUA 27

When Computers Were Only Dreams<\/h3> – You read about them in 73 …… K1NUN 28

Gold Is Where You Find It!<\/h3> – My first on-the-air experience …… W2UW 31

The History of Ham Radio<\/h3> – Parts 11 and 12: More 1920s two-way trans-atlantic the JARU and The Hoover Conference …… W9CI 50

Build the PSK-20 WRP Kit<\/h3> – This transceiver is a Small Wonder …… W4DXV 18
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73 Ham Radio Today Issue October 2001<\/a>
<\/h2>\n

Antenna Tuning at the Speed of Light<\/h3> – Build your own 8-channel fiber optic control system …… WA6TLK 10

CTCSS Encoder-decoder Test Device<\/h3> – Nice article + Useful piece of equipment = Construction fun! …… W6WTU 16

Your Long-lost Transistor Notebook<\/h3> – Part 4 of 4 …… W6WTU 21

DTMF Remote Controlling<\/h3> – In somewhat fractured syntax here’s how to let your fingers do the talking …… Sanati 25

The QRP Asylum That Almost Closed<\/h3> – The mad building spree continues …… NY9D 30

Cleanin’ and Climbin’<\/h3> – Hams get involved again …… W6WTU 33

Bear Island on the Air<\/h3> – Don’t forget to use your antenna tuner …… KD4PBJ 36

SK Night – the Real Meaning!<\/h3> – This guy is pretty spooky …… AA2JZ 40
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73 Ham Radio Today Issue November 2001<\/a>
<\/h2>\n

Practical RF Ground Stations for AMSAT A0-40<\/h3> – All you need to know …… GM4PLM 11

Microwave Antennas for A0-40<\/h3> – The expert speaks …… GM4PLM 17

Modifying the TranSystem 3733 for Mode S<\/h3> – Get in on the fun! …… KA0YOS 24

Build the FODTrack<\/h3> – How about a low-cost tracking interface? …… KA0YOS 26

What Is an EasySat Anyway?<\/h3> – Now you know …… K5OE 29

The PCSat APRS Satellite<\/h3> – More fun on the horizon …… WB4APR 33

All Aboard for ARISS<\/h3> – Amateur Radio in the International Space Station …… KA3HDO 40

Hamsats Awards<\/h3> – Join the fun! …… KK5DO 46

A Modest Proposal<\/h3> – Prophesied nearly a decade ago S-band has come of age with the Oscar-40 spacecraft. With some revealing insights here’s why …… G3RUH 50

Risky Business<\/h3> – That’s one way to describe designing our next radio amateur satellite …… K5NRK 53

AMSAT Where to Next?<\/h3> – The prez tells us …… VE3FRH 53
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73 Ham Radio Today Issue December 2001<\/a>
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Microwind to the Rescue!<\/h3> – Let the wind keep your emergency batteries charged …… WA8YKN 10

Subdivision Subterfuge<\/h3> – A Houston homeowner handles his hamming …… KD5IDU 17

IOTA -aS096<\/h3> – That’s St. Mary’s Island to you …… VU2SBJ 20

Bare Bones Battery Booster<\/h3> – A good project – as long as you understand the dangers and limitations …… N0GJ 23

VOM Primer<\/h3> – This overview is helpful for beginners and old-timers alike …… W2GOM\/7 28

Travels with Henryk -part 1<\/h3> – SM0JHF shares some photos – and the fun of hamming …… SM0JHF 30

Ye Olde Fishpole Vertical<\/h3> – Some things never change -thankfully …… HL1\/n8HI 32

The Builder’s Dozen<\/h3> – Uncommon uses for common stuff …… AA2JZ 36

lC-706 Goes to Hell<\/h3> – How to mate your Icom rig with an old Heil headset …… W5RK 37

Helsinki or Buzz!<\/h3> – No-frills tickets meant an instant junket to OH-iand for this G3 …… G3SWH 38

Beginner’s PS Tester<\/h3> – This variable active load will do the trick …… WB9VBM N9BRL 40

RF Inferno<\/h3> – Meet the new Raibeam antennas …… K7GCO 24
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73 Ham Radio Today Issue January 2002<\/a>
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Build a 1.2 GHz FM Repeater<\/h3> – With a lot of initiative and perseverance these hams realized success …… NY9D 10

AII-star Expanded-scale AC Voltmeter<\/h3> – Monitor your line voltage with this high-performer …… K8ZOA 15

Travels with Henryk -part 2<\/h3> – SM0JHF shares some photos – and the fun of hamming …… SM0JHF 22

VTVMs and FETVMs<\/h3> – Theory and practice …… W2GOM\/7 24

The ABCs of IRCs<\/h3> – Just what ARE International Reply Coupons anyway? …… G3SWH 27

Build This Simple Electronic Keyer<\/h3> – One of the nicest little projects we’ve seen …… Sellen 55

The Peet Brothers Ultimeter 2000<\/h3> – A weather station with hams in mind …… KE8YN\/0 35

2001 annual Index<\/h3> …… 31
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73 Ham Radio Today Issue February 2002<\/a>
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Weather Sat Tracking is Awesome!<\/h3> – Real science means real fun for 8 to 12-year-olds! …… VK2BXX 10

Not Simply Another Keyer!<\/h3> – That’s right! It’s better …… W2GOM\/7 16

Direct-mount “J” Antenna for 440 MHz HTs<\/h3> – If you’re looking for better performance …… W4JC 21

New Life for a Pierson KE-93<\/h3> – Part 1 of 3 …… W6WTU 24

Lamps from Tubes<\/h3> – For fun and profit -and gifts! …… WA2OKZ 28

LOPs to Think About<\/h3> – Come aboard for a great surplus find …… W1RO\/7 31

The Saga of Archie & Tillie<\/h3> – otherwise known as Elmer …… AA2JZ 35

QRP Internet Computing<\/h3> – Fast powerful secure …… KC0IZI 37

Inkjet QSLs the Easy Way<\/h3> – Basic techniques for basic cards …… KE8YN\/0 38

Your Own Owner’s Manual<\/h3> – Are you recording project accomplishments in a logical fashion for future reference? …… AA2JZ 56
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73 Ham Radio Today Issue March 2002<\/a>
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Switched Mode Power Supplies<\/h3> – Get out your calculator and have some fun …… W2GOM\/7 10

Vent-a-fume<\/h3> – This project has produced more than its share of fans …… AA2JZ 17

New Life for a Pierson KE-93<\/h3> – Part 2 of 3 …… W6WTU 19

Travels with Henryk -part 3<\/h3> – East meets West in the north …… SM0JHF 24

One Repeater to Go Please!<\/h3> – Another emergency tip from 73’s Disaster Master …… KE8YN\/0 27

Understanding the CWTHA<\/h3> – This technical reprint about resonant contrawound toroidal helixes is good food for thought …… Hansen 31

Snakebit!<\/h3> – A radio tale about the importance of getting things right the first time …… WD9APU 36

Elmers Applaud Ham Ambassador Program<\/h3> – Progress! …… WB6NOA 55

MFJ’s 1899T Portable Antenna<\/h3> – Great for the Yaesu FT-817 or any other QRP rig …… K7UGO 33
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73 Ham Radio Today Issue April 2002<\/a>
<\/h2>\n

Ham Window Dressing<\/h3> – If this nifty car frequency display doesn’t draw gawks nothing ever will …… Rynone 10

SOS… SOS… Titanic!<\/h3> – Radio operators’ courage still inspires amateurs …… Garcia 14

Does Your Junk Box Runneth Over?<\/h3> – A true junkie explains how to get a grip …… W6WTU 19

New Life for a Pierson KE-93<\/h3> – Part 3 of 3 …… W6WTU 22

The Call of the Maldives<\/h3> – 8Q7WH that is …… G3SWH 25

Easy-build Project of the Month<\/h3> – This time: 400 kHz AC low pass filter for 120 VAC 60 Hz line filtering …… K8IHQ 29

Tesla : Inventor of Radio and Modern Day AC<\/h3> – (Marconi & Edison notwithstanding) …… Brand Watts & W8AHB 31

Mt. Wilson Travelogue<\/h3> – Join this private tour of one of America’s most famous observatories …… W6WTU 38
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73 Ham Radio Today Issue June 2002<\/a>
<\/h2>\n

6m Fun Loop<\/h3> – A low-cost gain antenna for the VHF technician …… N2DCH 10

Roll Your Own RF Transformers<\/h3> – But don’t get Too wound up in it …… K8ZOA 12

Build This Commercial-quality Counter -part 2 of 2<\/h3> – Amaze your friends and yourself! …… K8IHQ 20

Temp-controlled Solder Station<\/h3> – Here’s a simple project to improve your bench …… AA2JZ 25

Restoring an HQ-140-X Part 2<\/h3> – This Hammarlund rig has always been a favorite …… W6WTU 27

Travels with Henryk -part 5<\/h3> – The niceties of Norway …… SM0JHF 31

Glow Little Glo-bar<\/h3> – We bet this gets You thinking …… K8IHQ 33

Icom Interface Texas-style<\/h3> – This mod for 706\/706MKII owners has concepts everybody can use …… W5RR 35

Windowsill Mount for Verticals<\/h3> – For when you’re not flying the flag …… HL1\/n8HI 36

Techniques Time Line<\/h3> – How much do you know about the evolution of construction practices? …… W6WTU 52
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73 Ham Radio Today Issue July 2002<\/a>
<\/h2>\n

You Can Build This VLF to HF Loop Receiving Antenna<\/h3> – Part 1 of 3 …… K8ZOA 10

Ladder Crystal Filters for NBFM<\/h3> – Some tricks of the trade from the OM who literally wrote the book …… N2DCH 16

Easy-build Project of the Month<\/h3> – How about this prototyping bench DC PS? …… K8IHQ 20

Tesla’s Champions<\/h3> – Everybody should have some supporters like these …… W8AHB 24

Make Your Own VHF DX!<\/h3> – Need a neat club activity? …… WB9YBM 29

The 21st-century Scrounger<\/h3> – The end products justify the means -or something like that …… N8PTG 32

Travels with Henryk -part 6<\/h3> – Portuguese hospitality at its best …… SM0JHF 35

What Amateur Radio Means to Me<\/h3> – Do you feel the same way? …… KD5IDU 37

Too Many Projects to Build<\/h3> – Listen up as a solder-stupefied ham reveals how to reach this nirvanic state …… AA2JZ 55

Great Gift Idea!<\/h3> – Check out this LED super-system …… WB6NOA 38
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73 Ham Radio Today Issue August 2002<\/a>
<\/h2>\n

You Can Build This VLF to HF Loop Receiving Antenna<\/h3> – Part 2 of 3 …… K8ZOA 10

Vacuum Tubes: Romance and Reality<\/h3> – A (mostly) glowing tale …… W8QYR 16

2 m\/70 cm Quad Revisited -part 1<\/h3> – Tryout this new improved update to a CQ article …… K8IHQ 19

Twisted Tale: The Dial File<\/h3> – Ever wonder how dials evolved? Well read this anyway …… W6WTU 23

Twin for Two<\/h3> – Give this home-made twin loop for 2m a try -and be surprised …… AC6XJ 30

This Thing Called Wire-wrap<\/h3> – Whether you refer to it as a technique a technology or just plain old-fashioned wire-wrapping is still valuable to know …… K8IHQ 32

Travels with Henryk -part 7<\/h3> – Hams in the Aland Islands OH0 …… SM0JHF 36

Read All About It!<\/h3> – Part 11 of good stuff from The Hertzian Herald …… K8JWR 39

The Hamfest From Hell<\/h3> – Are you in this story? …… Annonymous 40

The Write Stuff<\/h3> – Here’s a work-at-home scheme that is no scam …… AA2JZ 41
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73 Ham Radio Today Issue September 2002<\/a>
<\/h2>\n

Amplifier Testbench Report<\/h3> – Here’s a look at broadband amps that’s packed with useful insight …… K8ZOA 10

2m\/70 cm quad Revisited -part 2<\/h3> – Try out this new improved update to a CQ article (July 1999) …… K8IHQ 18

General-purpose Interface Board for the ISA Bus<\/h3> – A simple inexpensive alternative for interfacing resl-time home-brewed applications to the PC …… AB2LX 20

Inside a Lampkin<\/h3> – More secrets of deviant behavior …… W6WTU 26

You Can Build This VLF to HF Loop Receiving Antenna<\/h3> – Part 3 of 3 …… K8ZOA 32

“CQ Lidsville CQ”<\/h3> – Are you in one of these QSOs? …… 34

FAIRS in Dominica<\/h3> – As the saying goes it was a tough job but somebody had to do it …… KK4WW et al. 38
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73 Ham Radio Today Issue October 2002<\/a>
<\/h2>\n

IF Test Box<\/h3> – A real “can”-do project …… AA2JZ 10

Mobile Ham Repeater<\/h3> – Isn’t it time your club had one? …… W6WTU 14

Inside Today’s Kit Biz<\/h3> – An interview with Marshall Emm N1FN …… KF6FJU 23

Close Encounters of the 5R Kind<\/h3> – Our Fearless Phil moseys out to Madagascar …… G3SWH 27

What’s in a Name?<\/h3> – Badge that is? A cabin fever cure-all …… AA2JZ 33

Letter From the Other Side<\/h3> – Re: Celebrating the bisesquicentennial of a shocking event …… K8JWR 35

Saving the Fleet<\/h3> – Of batteries that is …… Buchmann 36

The History of Ham Radio<\/h3> – Part 13- Birth of the Wouff Hong …… W9CI SK 38

CPR for Your ARC<\/h3> – How to revive the local club …… N8OMW 52

QSL Archiving Made Easy<\/h3> – A Pioneering way …… NL7ZW 53
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73 Ham Radio Today Issue November 2002<\/a>
<\/h2>\n

Your Turn for a Coil Winder<\/h3> – The Gingery Universal Coil Winder can be an easy and handy addition to your bench …… K8ZOA 10

Multiple CW Filters<\/h3> – Here are some clear descriptions and examples of how you can set up an active audio filter …… W2GOM\/7 16

Automotive Battery Voltage Monitor<\/h3> – Interesting to analyze simple to build …… KC5MFY 20

Travels with Henryk -part 9<\/h3> – CQ de Havana …… SM0JHF 22

I Love My 80m Loop!<\/h3> – And you will too! …… KL7JR 25

No Place Like Ohm<\/h3> – A little refresher on the basis for most of what we do …… W2GOM\/7 28

Solid State Junk Box Thermometers<\/h3> – Everybody needs one of these …… W6WTU 30

Going Over a Gonset G-77<\/h3> – A transmitter from me old days (well 1957) gets tested and evaluated …… W6WTU 33

Read All About It!<\/h3> – Part 12 of good stuff from The Hertzian Herald …… K8JWR 37

The History of Ham Radio<\/h3> – Part 14: The Hoover era comes to an end …… W9CI SK 39
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73 Ham Radio Today Issue December 2002<\/a>
<\/h2>\n

Commercial-quality Function Generator<\/h3> – Will you outlive it -or vice versa? …… K8IHO 10

Shedding Some Light on Dimmers<\/h3> – Why not put one of these triacs to use? …… W2GOM\/7 22

Eager for Meager<\/h3> – Try an 11m vertical on 160 …… AD1B 24

Shack Switch for Foot Fetishists<\/h3> – Not that it’s That kinky …… WA2OKZ 27

Ashore at Sacrifice Rock!<\/h3> – The saga of a masterful DXpedition …… VU2SBJ 28

Hamfest Success Formula<\/h3> – How to make sure your ‘fest is a success …… K9TRG 36

Read All About It!<\/h3> – Part 13 of good stuff from The Herman Herald …… K8JWR 58
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73 Ham Radio Today Issue January 2003<\/a>
<\/h2>\n

Build This Amazing ESR Meter<\/h3> – A simple project for everybody’s shack …… K8ZOA 10

K.I.S.S. Trickle Charger<\/h3> – And the ABCs of battery maintenance …… K9TRG 19

Experimenting with Hall-effect Sensors<\/h3> – For fun and knowledge …… W6WTU 25

On the Face of It A Good Idea<\/h3> – How to ace those finishing touches on your home-brewed pride-and-joys …… AA2JZ 29

Travels with Henryk -part 9<\/h3> – The Dominican Republic where the main mode is merengue …… SM0JHF 35

2m FM Ham History 101<\/h3> – It’s time you got your degree …… K1NUN 38

To the Rescue<\/h3> – A story about 2m and winches -we hope …… KE6FBO 40
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73 Ham Radio Today Issue February 2003<\/a>
<\/h2>\n

Cheap & Easy Portable HF Vertical<\/h3> – Try this medium-weight sturdy neat visually pleasing fun to use …… K8MKB 10

Troubleshooting Computer Power Supplies<\/h3> – Rule # 1: Be careful …… W6WTU 14

Build This Simple SMT Station<\/h3> – Dinner and a movie? How about pizza and a project? …… AA2JZ 23

How’s That Thing Really Work Anyway?<\/h3> – Part 1: Receivers …… AA2JZ 25

Warblemania<\/h3> – and other QRP afflictions …… NY9D 27

Breakdown in Cape Town<\/h3> – The surprise activity on this little jaunt turns out to be not just on the air …… G3SWH 30

Hamfest Survival Guide<\/h3> – So that you can live to ‘fest another day …… WB9YBM 33

Radio Comm in the French and Indian War<\/h3> – Anything’s possible when the Military Radio Collectors Association holds its annual meet …… K0RMK 34

CQ Sooner Spring<\/h3> – An emergency preparedness drill that was more than OK …… NB5N & Cox 36

Lifeline for Your Driftmaster<\/h3> – How to stabilize a boat anchor …… W1TLZ 39
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73 Ham Radio Today Issue March 2003<\/a>
<\/h2>\n

Build Your DREAM Antenna<\/h3> – As in Dual-suspension Removable Easy-to-build Amateur-radio Multiple-band 10-meter mobile antenna system …… AC3L 10

All Keyed Up<\/h3> – Over this neat project …… K8ZOA 14

Junkbox Telephone Recording Adapter<\/h3> – Caught on tape …… KC5MFY 21

Meter Made<\/h3> – Here’s how to recycle those VU meters in old stereos …… N2DCH 23

Autobiography of Everyham -part 1<\/h3> – How many times do you see yourself in this story? …… WB9YBM 26

All About Electronics Frustration<\/h3> – Or What to do when neighborly theory meets neighborly reality …… W6WTU 35

Travels with Henryk -part 10<\/h3> – Lithuania: “elementary essence of our hobby” …… SM0JHF 38

Front and Center<\/h3> – How to use your computer to make personalized front panels …… AA2JZ 40
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73 Ham Radio Today Issue April 2003<\/a>
<\/h2>\n

Right Fancy CPO<\/h3> – A keyer from My Kid Brother …… K8MKB 10

Ham’s Handy Heat Hunter<\/h3> – Let this temperature probe take your shack’s temperatures …… KC5MFY 20

Ozzie’s Jupi-loop<\/h3> – Use an aircore balun with your Ten-tee Jupiter …… W5RK 23

Ishmod Update -trams<\/h3> …… 24

Travels with Henryk -part 11<\/h3> – Adoring the Azores….. SM0JHF 27

The Interrelationship of the Coriolis Force the Helix Effect and So-called Einstein Antennas<\/h3> – As usual 73 takes you right to the cutting edge of… er ..science …… WA0KKC 29

Autobiography of Everyham -part 2<\/h3> – How many times do you see yourself in this story? …… WB9YBM 30

Hamfest Improvement 101<\/h3> – How to make things better for everybody …… WB9YBM 35

Pluses and Minuses of “Smart” Batteries<\/h3> – We charged one of the world’s leading experts with explaining and here’s his plug …er report …… Buchmann 37
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73 Ham Radio Today Issue May 2003<\/a>
<\/h2>\n

Tunable Broadcast Band Filter<\/h3> – Another great project from K8ZOA …… K8ZOA 10

How to Avoid a Disaster Disaster<\/h3> – And how about putting the field back in Field Day? …… WB9YBM 22

Ready Set… Don’t Go?<\/h3> – The time for preparation to be a meaningful participant in the next emergency situation is before the event occurs …… AA2JZ 23

‘Quaker Oaths<\/h3> – In 1989 the ARS came through… is it still ready? …… WA6ITF 24

Ham vs. Power Outage<\/h3> – Here’s a solution that will warm your heart -as well as your wife’s toes …… WA9PYH 26

Travels with Henryk -part 12<\/h3> – Have some Madeira m’ dear? …… SM0JHF 34

How’s That Thing Really Work Anyway?<\/h3> – Part 2: Transmitters …… AA2JZ 37

The History of Ham Radio<\/h3> – Part XV …… W9CI 39
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73 Ham Radio Today Issue June 2003<\/a>
<\/h2>\n

QRP Antenna Showdown<\/h3> – What’s the best antenna to use with your QRP rig? …… K7UGQ 10

Field Day 2002: Out on Our Own<\/h3> – Can you spell duct tape? …… WA9PYH 14

Now Hear This!<\/h3> – Home-brew yourself a magnetic headphone …… N4HCJ 18

Yes I Built Sixteen Log Periodic Antennas!<\/h3> – Part 1: Theory and tests …… W4AEO 20

Travels with Henryk -part 13<\/h3> – Borneo hams strut their stuff …… SM0JHF 30

Reverse Breakdown Voltage Measurement Adapter<\/h3> – Build this simple project for your bench …… KC5MFY 34

73’s DX Dynasty Award List<\/h3> …… Staff 38
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73 Ham Radio Today Issue July 2003<\/a>
<\/h2>\n

Inside the ARRL -the REAL Story<\/h3> – Show this to your ARRL Director if you want ham radio to survive …… K2QAI 10

World Radiosport Team Championships -2002<\/h3> – A photoreport …… SM0JHF 14

Getting Back a Gertsch<\/h3> – Adventures in refurbishing a Singer-gertsch FM-9 frequency\/deviation meter …… W6WTU 18

Yes I Built Sixteen log Periodic Antennas!<\/h3> – Part 2: Assembly …… W4AEO 24

Batteries to the Max!<\/h3> – An expert tells us how to get the most out of ’em …… Buchmann 32

A Sorry Solder Tale<\/h3> – If you’re a masochist figuring out how to bulk-solder will be great fun …… WB8VGE 35

Morse-by-mouth<\/h3> – A unique way to master the code? …… K6KSR 39

A Tale of the Tape<\/h3> – (You think) …… AA2JZ 41

Daddy’s Girl<\/h3> – How a ham license became a ticket… to grow up …… KE3KH 42

Inside the Wristlinx X2X FRS\/gMRS Wristwatch Communicator<\/h3> – where your ace reviewer has the time of his life …… KB1UM 29
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73 Ham Radio Today Issue August 2003<\/a>
<\/h2>\n

Clamp-on DC Ammeter<\/h3> – A project suitable for ham radio? Of cores …… W6WTU 10

The Ins and Outs of Parts Substitution<\/h3> – Part 1: Understanding the basics …… W6WTU 18

How to Check Transistors with an Ohmmeter<\/h3> – Or: Let’s cheat …… W9QKC 23

Two Monitors Are Better Than One<\/h3> – Run tandem screens and really impress ’em …… W6PNW 25

Travels with Henryk -part 14<\/h3> – Do Not Pass Go(a) …… SM0JHF 26

Easy Audio Tracer<\/h3> – How does this project sound? …… AA2JZ 28

G.I. Joe and Mr. Morse<\/h3> – Try telling the military that Morse code is dead …… K7LTC 30

MFJ and the CW Jedi<\/h3> – An iambic beginner tries out the MFJ-564 paddle …… N3PRT 34
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73 Ham Radio Today Issue September 2003<\/a>
<\/h2>\n

Just Hang’er Up<\/h3> – Clear out your closets with this fun WARC tri-band dipole …… W4DAN 10

Portable Pulse Generator<\/h3> – Build this pocket-size test instrument that’s useful in a wide variety of lab and service tasks …… Sellen 13

Be a Caribbean HEARO<\/h3> – How about a little mini-dX from the USVI?… W9CGl 18

73 Repaired My TV<\/h3> – Thanks
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73 Amateur Radio Today – Table of Contents – All Issues Return to 73 Amateur Radio Today Archive 73 Ham Radio Today Issue October 1960 Audio Booster – A three transistor amplifier that hooks across the mike to give you more talk power for SSB or AM without distortion …… K5JKX\/6 Something New in FM […]<\/p>\n

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