73 Amateur Radio Today – January 1983
Issue Contents:
Action Machine for 20
– Are home-brew rigs a lost art? No yet! Here’s an SSB transceiver you can build …… WB5IPM 12
An Alarming Procedure
– This false-proof repeater emergency alert won’t tie up expensive equipment …… WA1LCF K1FNX 24
Trimming the Fat from ATV
– Why use 3 MHz when 500 kHz will do? WB6FHD proposes a way …… WB6FHD 32
The Forgetful Autodialer Puzzle
– 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
– For W1FLP reclaiming silver fromphotographic fixer is cheap easy and profitable. King Midas should have had it so good …… W1FLP 46
Fun-equipment Revisited
– 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
– 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
– 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
– There are many ways to make these devices earn their keep Here is one …… K3VDB 62
International Success Story: The BBC
– 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
– 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
– 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
– No frills-just a sold $10 SSB exciter for HF Who says hams don’t build anymore …… VE7DOD 92
King of the Pulse Generators
– 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
73 Amateur Radio Today – January 1983
