[Collins] Collins Mech. Filter

[Dr. Gerald N. Johnson, electrical engineer]

By the part number its 6 KHz wide, I suspect fewer resonators than the
FA filter, but it does fit the S-line sockets. For AM you will have to
wire the switch to put it into the circuit. There's a mod to use both
the transformers and mechanical filter at the same time for better
ultimate rejection.

73, Jerry, K0CQ
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