73 Amateur Radio Today – April 1979 Issue with Index
Issue Contents:
A Speedy Spinner Mod
– 5 000 000 Hz per minute …… W2RZJ 40
A Variable Bandpass Active Filter
– extremely simple design …… W3KBM 42
What About an Active Antenna?
– here’s a look at one …… W5JJ 44
Help for the Hearing-impaired
– don’t miss another phone call …… W4VRV 56
Try a Bi-loop Antenna
– gets you coming and going …… W7CJB 58
Simple RTTY IDer
– uses five ICs …… G3MEJ 60
Tales of Speech Processing
– including a practical design …… WA4JHS 62
PTT For Ten-tec’s Linear
– no more “aahhh” and “uuhhh” …… DA1NF/wD6AXL 68
Disaster Preparedness
– it can happen here …… N4AL 74
Comfort Mods for the Mark II
– invert your duck …… WA4HUZ 78
An 8080 Repeater Control System
– part III: software …… N3IC 82
The Micro Duper
– for small contests …… WB2MIC WA2RZR 96
An 8080 Disassembler
– written in BASIC yet! …… Raskin 98
Antenna Bonanza for 10
– CB is good for something …… W6LVT 102
Lightning!
– a case history …… W8HXR 104
Build a CW Memory
– fun! …… WA1ZFW 106
Wire-wrap on a Budget
– home-brew your tools …… K4LPQ 108
Compact Continuity Tester
…… Miller 116
Who Needs SSB?
– using your FT-101 on 10m AM …… K8JS 118
12 Volts 5 Amps 3 Terminals
– what could be simpler? …… WA4FYZ 120
Has Anyone Seen OSCAR 7?
– find it with your SR-56 …… Mayse 122
Tricky QSK
– a treat for CW …… Blasco 124
Make Life Easier
– with a workbench speed control …… W4CQQ 126
The Heath/kenwood Connection
– RIT for the 104 …… WB5QGI 128
An 8-element All-driven Vertical Beam
– super array for DX …… W1DBM 132
CW with a Nordic Flair
– new life for the Viking I …… K2VJ 146
House Hunting for Hams
– caveat emptor! …… WB9URA 150
73 Amateur Radio Today – April 1979 Issue with Index
