Published:2009/7/13 10:54:00 Author:May | From:SeekIC
This figure shows a notch filter that will tune roughly from 600 Hz to 3 kHz; it has been used by ham and SWL builders for a number of years. It is used for notching out unwanted CW stations or for notching out heterodynes in receivqr outputs. Insert this filter between the headphone output of the receiver and a power amplifier stage.
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