73 Amateur Radio Today – August 1969
Issue Contents:
Listen In on Two-meter FM Repeater
– Two little ole transistors in this simple monitor receiver …… K0VQY 4
An FET Regenerative Receiver for 3.5 mhz and Up
– Or use two FET’s and have a ball on the low bands …… W6OSA 6
Multi-channel FM Operation
– Adding relay crystal switching to commercial FM gear …… WA7EVX 12
The Case for the 5/8 wave Vertical
– John makes a very good case indeed for this antenna …… W2EEY 14
The Genesis of Radio Reception
– History Lesson …… WlUSM 22
An Introduction to Integrated Circuits
– Let’s hope that an intimate relationship results …… WAlFHJ 26
RTTY Tone Generator
– Now you can mark and space up a storm …… W7FLC 32
General Purpose Good-bad Transistor Tester
– Use less if all your transistors are in excellent shape …… W0KKA 41
A Compact Two-meter Transmitter
– 2E26 output phone …… W4UOY 42
Measuring f t of Surplus Transistors
– There are some enormous bargains around…… WA1FRJ 46
Skylines for 160 Made Simpler
– 160M antennas from A to exhaustion …… WlEZT 49
The Triac
– New gadget you should know about. Wot next? …… K8TSQ 59
430-470 khz Sweep Frequency Generator
– That’s khz not mhz. This is for aligning i-f strips …… WA5SWD 62
What Do You Think?
– A special 73 metaphysical feature …… KlOXK 64
Leaky Lines
– Grumbles by Sam … err Dave…… K2AGZ 66
Magikey — for Automatic Didahs
– Another automatic key and a good one – 2 transistors …… W3SGV 68
FM = Fun Maker
– Say are you missing out on the FM bandwagon? …… K2PTS 72
The SB100 on Six Meters
– It’s possible …… WB4CXL 74
Measuring the Frequency of Unmarked Crystals
– Different simple ways of doing this …… K1EUJ 76
Extra Class Study Course. Part VII
– There is no excuse for failing the test if you read this …… Staff 78
Now You Too Can Have A Deviation Meter
– Don’t deviate too much …… K9STM 96
Two Transistor 1500 Mile Transmitter
– 1/4 watt super QRP rig for some excitement …… K0VQY 98
Long Circular Quads
– Our cover feature for moon bounce work …… WA4KAE 101
Measuring FM Receiver Noise Figure
– Taking the mystery out of this for FM receivers …… W8BBB 112
Would You Like To Be A Broadcast Engineer?
– No …… K2ULR 117
Distress : The Amateur and the Coast Guard
– What happens when an amateur passes along a distress call …… WB6UKX 122
A Transistor Parameter Tracer
– Useful unless tubes come back again …… K3PUR 128
What Are We Here For?
– Sometimes as we tune the bands perhaps we wonder too …… W8RHR 134
73 Amateur Radio Today – August 1969
