73 Amateur Radio Today – January 1981
Issue Contents:
Emergency Tone Alert System
…… WB5UVC WB5ASA WB5PRD 42
WWV-to-80 Meter Converter
…… N7BH 48
Cheap and Simple
– your basic 13.8-v 25-a power supply …… WA9VLK 50
Direct Printing FAX
– part III; testing and operation …… WB8DQT 54
Unplug It Dummy!
– safety for the traveling ham …… WB9SKX 58
Power Plus for the Omni
– Improving on Ten-tec’s power supply …… WA4IQQ 60
Oddball Offsets for the KDK-2015R
– make a good rig better …… WB6MYF
The Strange Predicament of Walter Hann
– OE8WHK did the right thing-and suffered the consequences …… WA4PYQ 66
Put “the Rep” in Your Repeater
– an automatic autopatch dialer …… K4ALS 68
Quick and Dirty Line Noise Suppressor
…… WA4PYQ 76
Over the Hump and into History
– the last flight of #42-107270 …… Ritchey 78
Rx and Cx
– easy-to-build substitution boxes …… WD5CDJ 84
Don’t Be Sunk by Heat Sinks
– a painless introduction to heat-transfer physics …… WA4OSH 86
Tracker -the Ultimate OSCAR Finder
…… WD8DRK K8UR 88
You Still Haven’t Built a Logic Probe?
– try this one …… Vergona 96
VHF Contesting
– a magnificent obsession …… N8RK 100
Sell ‘Em with Slides
– A/v shows can fire up enthusiasm …… N8BPI 104
The Power Waster
– adjustable electronic load for power supply testing …… K6IQL 108
QRZ Sunshine
– building solar-powered repeaters …… WBlHXY 114
Transmitter Tune-up for Blind Hams
– an audible indicator for power out …… WA4LBX 120
Installing Subaudible Tone Encoders
– do it right …… WA7LMO/n6XB 126
Four-band Mobile Antenna
– looks like a weird hat rack …… K5PTC 129
Computers and HF
– a discussion of alternatives …… W9JD/dAlFE 130
Ned Novice and his Capacitance Meter
– you too can build one …… W4VGZ 132
Daze of Whine and Noises
– intoxicating information about alternators …… K2PMA 146
73 Amateur Radio Today – January 1981
