CRYSIAL_RADIOTELEGRAPH_I_F_FILTER

Published:2009/7/14 3:58:00 Author:May | From:SeekIC

Voltage-controlled varactor diode D1 permits remote location of potentiometer used for phasing adjustment. Circuit can be used for any i-f value from 100 kc to 1.6 Mc by selecting crystal with desired frequency.-H. Olson, Remotely Tuned Crystal Filter Eliminates Tuned Transformer, Electronics, 38:23, p 113.



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