73 Amateur Radio Today – January 1974
Issue Contents:
Wide Range Audio Oscillator
– Cheapskate special – uses one 50 cent IC …… W2EEY 25
Another ID Generator Circuit
– Mobile fixed; for FM SSB and RTTY …… W9DTW 29
Expanded Range Line Monitor
– 110 -120V ac full scale metering …… WA0ABI 34
Oscillators on 432 and 1296 MHz
– Inexpensive UHF experimenting …… K1CLL 35
Simple Active Filter
– For CW SSB RTTY etc …… W6AGX 41
Video Tape Recorders
– Better’n movies …… WB8HEE 43
Inexpensive Decimal Counting Unit
– For all those uncounted decimals …… VE3CWY 47
Whistle up a QSO
– With tape cassettes …… K1YSD 55
10 Meter Tuner
– Beginners’ construction project …… K1CLL 57
FAX Converter Using IC’s
– More Fax facts …… K6LJY/7 63
Simple Touchtone Pad
– Using the 1035C3A pad …… WA3EEC/l 13
The $1000 Antenna System
– Conservatively estimated …… WA6CPP 77
Special Considerations for Digital Design
– Line noise spurious signals and crosstalk problems …… K3VKC 83
Selectable Voltage Power Supply
– Beginners project which will be useful for years …… WB6BIH 81
Three Wavelength Loop for 20M
– 4 dB gain …… G2FXQ 89
Visiting Regency
– With a look at the HE 220! …… Staff 91
A Versatile Code Practice Oscillator
– Two IC’s …… Wilson 93
Wiring Harnesses Made Easy
– In jig time …… VE4RE 97
How to go Mobile
– Though compact imported or married …… WA1GNX 101
Unbreakable Antennas for the TR-22
– For when you break your whip …… K9KIC 105
Leading Zero Suppression for Digital Displays
– Getting rid of nothing …… W1DMU 107
Automatic Touchtone Dialer
– Using tape cassettes …… K4TWS 111
73 Amateur Radio Today – January 1974
