I recently received a CW filter Kenwood YF-88HCW for my TS-520.
I believe it is 200 Hz and 8.8307 KHz IF.
I don't know what other rigs it will work in but I no longer have the TS520.
So if it will be useful for someone I will ship for $50.00 postpaid USA.
Healthfully yours,
Don W4BWS
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