Radio Direction Finder

Posted on Oct 31, 2012

This RDF circuit consists of a square-wave oscillator (IC1), which switches two antennas alternately at an audio rat

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e. A phase detector (Ql, 2, 3, 7) is used to compare receiver output amplified by IC2 with the reference phase from IC2 with the reference phase from IC1. 50- meter is used as a left-right indicator. IC3 is a comparator used to drive indicator LEDs.

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