73 Amateur Radio Today – September 1972

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

Return to 73 Amateur Radio Today Index


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