73 Amateur Radio Today – November 1982

73 Amateur Radio Today – November 1982

Issue Contents:

A Perfect “10”

– 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

– 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

– 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

– 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?

– Yep. And even the most modern receivers benefit from this QRM-crusher …… W4MLE 32

A Tuner For Antenna Fanatics

– Anyone experimenting with antennas needs a darn good tuner. Construct this one and save your finals …… Staff 42

Digital Basics

– 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

– 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

– LNAs are expensive but rolling your own is a losing proposition …… WB0POP 64

The Sound of Silence

– Beep!! Your TS-180 is off the air Charlie …… HB9BLU 70

Build the Re-fuser

– It’s a self-replacing fuse. Why blow one when you can blow two? …… K5CN 72

No Smoking in the Ham Shack

– Overvoltage kills solld-state finals Protect yours for $1.00 …… N7JJ 74

Tempo MARSer

– 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

– The simpllcity of BASIC plus the speed of machine language equals a near-perfect Morse keyboard …… N5MR 84

Everyman’s Audio Amplifier

– 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

– Certificate hunters cut your paperwork down to size. Let your Pet track your quest for excellence …… WB2GFE 94

Speed Demon

– How fast was that? Find out with this wpm display for Heath’s 1410 keyer …… K4ZHM 102

Keyer on a Shoestring

– 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?

– A look at what Elmer forgot to tell you …… N1II 106

73 Amateur Radio Today – November 1982

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