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Title: 9.4 kHz Mechanical filter for 51J-4 Post by: Steve - K4HX on August 15, 2020, 12:08:19 PM Some adapting, connection work will need to be done to connect to the J-4 socket. I have one (in a case that fits the J-4 filter sockets) in my 51J-4. Great for enhanced fidelity AM reception. AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
https://forums.qrz.com/index.php?threads/collins-500khz-mech-filters.719572/ |