455_kHz_IF_WITH_AF_COMPRESSOR

Published:2009/7/8 3:41:00 Author:May | From:SeekIC

Combination of IF amplifier, audio compressor, tunable audio filter, and audio output system operates from single supply. Compressor and filter each use N5558V dual opamps or equivalent units. Tuning range of filter is about 500 to 2000 Hz. IF input goes directly to pin 2 of LM373H.Use coupling capacitor to prevent shorting pin 2 to ground and damaging IC.-R. Megirian, Design ldeasfor Miniature Communications Receivers, Ham Radio, April 1976, p 18-25.



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