BFO_MULTIPLEXER

Published:2009/7/7 20:10:00 Author:May | From:SeekIC

Signal 455-kHz multi-mode detection system using RCA CD4001AE quad NOR gate functions as upper-sideband or lower-sideband crystal oscillator, tunable BF0 for CW, or limiter of IF signal for FM or synchronous AM reception, Desired oscillator or limiter is gated on by grounding its digital control line with S1A. Multimode reception occurs when multiplexed output of oscillators and limiter is applied to product detector-J. Regula, BFO Multiplexor for a Multimode Detector, Ham Radio, Oct. 1975, p 52-55.



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