73 Amateur Radio Today – October 1980

73 Amateur Radio Today – October 1980

Issue Contents:

Escape from Mt. St. Helens!

…… W7WFO 34

Sheila Ran!

– a sightless sprinter’s triumph is one of ham radio’s finest hours …… WB41IFF 38

The First Man in Space Was a Ham

– UA1LO remembered …… W1QMS 42

NASA Satellites You Can Use

– with permission of course …… K40VK 50

Undertones

– a fractional frequency oscillator …… W4FEC 56

The Arcane Art of ATV

– the transverter approach to fast-scan television …… WB8DQT 60

How to Make a Good Scanner Better

– a bevy of useful mods …… WA4PYQ 68

Win Friends for Your Club

– PR is the name of the game …… WA5TUM 76

Field Strength for Free

– a home-brew conversion …… Staff 82

The QRM Killer

– antenna alternative for 40 …… W9HBF 88

PC Boards- A Photographic Method

– it’s easy when you take it step by step …… WB5HGR 104

Free CMOS Timers

– build one-shots from spare inverters …… WD5DDR 113

Late Check-ins Come Now

– zero-beat on this computerized NCS system …… N8AD 120

A Computer-controlled Talking Repeater

– Part I: Introduction …… WA6AXX 124

Murphy’s Own OSCAR Tracker

– simple pointer for satellite antennas …… K8BG 132

Counting with Class

– build this SOD-mHz LSI frequency counter …… WB4EKB 134

A Transistor for True Believers

– tubes forever? Not with FETs! …… WB7CMZ 142

Stay Cool with TM

– use thermostat modulation to lower your heating costs …… WB2EQG 144

One Man’s Magazine: Twenty Years of 73

…… N1AUI 146

How To Be An Amateur

…… W2ZGU 156

Some Guys Make It

– and then there’s us …… K2ORS 168

The 40-meter Band Blaster

– this antenna works but why? …… W9HBF 179

Gilding the Lily

– FT-101 mod for the crazy purists …… WB4HLZ 188

Mike Mods for the KDK-2016A

– improved scanning …… WB9WNU 190

Clock Blocks

– a compendium of TTL and CMOS oscillators …… K4IPV 192

Build a Better Battery Tester

– test ’em under load …… Staff 196

Getting the SB-220 to Idle

– a final-saving mod for Heath’s popular linear …… W9RY 197

Egad! An Easy-to-build Synthesizer!

…… N4CEY 210

73 Amateur Radio Today – October 1980

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