73 Amateur Radio Today – September 1972
Issue Contents:
Plumbicon SSTV Camera
– Cheapskate approach to slow scan …… K7YZZ 10
WWVB Receiver
– 60 kHz comparator receiver …… W7LHL 16
Audio Signal Generator
– A tube circuit? Yes cigar tube …… WA6QVQ 27
The CW Excavator
– Remarkable audio filter …… W2GOM 30
Exploring the Microwaves
– Antenna and test receivers for 1296 2300 and 3500 kHz …… K1CLL 38
Balun Up or Balun Down
– Advantages disadvantages and how to use …… G3BID 49
Another Solid State Power Supply
– Think piece with practical project resulting …… K7HKL 52
IC Six Meter Receiver
– Using only three IC’s …… K1CLL 57
FM-aM Demodulator
– Phase-lock loop application …… VK4ZFD 64
Active Filter Design Part III
– Mentholated or plain …… K3PUR 76
VHF Frequency Counter
– Part III at long last …… K2OAW 89
FM Frequency Synthesizer Part I
– Under $100 and works with almost any rig …… K2OAW 99
73 Amateur Radio Today – September 1972
