73 Amateur Radio Today – February 1977
Issue Contents:
Give That Professional Look to Your Home Brew Equipment
– win prizes …… McClellan 28
You Already Have an Atomic Frequency Standard
– here’s how to use it …… WD8ASL 32
Give The Hamburglar Heart Failure
– car alarm system …… WA5KPG 36
Contest Special Keyer
– has short but adequate memory …… WA2KUO 38
The Chintzy 12
– a junk box wonder …… W1OOP 40
You Can Sound Better With Speech Pre-emphasis
– a simple circuit which will work wonders …… Staff 42
Are You Really Insured?
– time to read the fine print …… W9KXJ 44
Getting a Patent -is It Really Worthwhile?
– how to do it if you really want to …… W2WLR 46
Keeping The Wind Down
– timer for your mobile rig …… WB8AZP 50
SSB: The Third Method
– bet you can’t even name the first two …… WB0JXY/0 52
The TTL One Shot
– another digital building block …… WB8YJE 56
DVMs Get Simpler and Simpler
– wait’ll you see the MC-1405! …… McClellan 60
Instant PC Boards using new Color
– Key technique …… Minchow 64
72 Computerized Satellite Tracking
– the needed software …… WB0JHS 72
Building The Polymorphics Video Board
– the voice of experience …… WB6JKM 78
RTTY Goes Modern
– using microprocessors …… WB6QFA 82
How to Use Those Old Teletypes
– computer operation with a 60 mA machine …… K7YZZ 88
Drive More Safely with a Mobile Dialer
– hold 4 or 8 phone numbers in a PROM …… W7JSW 102
Talk About DX WOW!
– you just never know …… W7IDF 112
An Automatic Be Squelch
– another use for your 2m Squelch …… Minchow 114
Tune Up a Random Wire
– world’s simplest antenna for 80-15 …… VK6DX/vK6ZEH 124
73 Amateur Radio Today – February 1977
