136_V_AT_1_A

Published:2009/7/17 4:11:00 Author:Jessie | From:SeekIC

Used in all-band double-conversion superheterodyne receiver for AM, narrow-band FM, CW, and SSB operation Simple transformer-rectifier-filter circuit is followed by zener-referenced Darlington pair. When transmitter of amateur station is on air, muting is accomplished by grounding base of Q44 through 2.7K resistor, which turns off Q45 and kills A+ to audio amplifier.-D. M. Eisenberg, Build This All-Band VHF Receiver, 73 Magazine, Jan. 1975, p 105-112.



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