Ouch, this slipped by me in my move to the K3 IF for the VHF-Microwave station. I use FM frequently on 10Ghz rainscatter when signals are strong. So I am looking for a K3 "FM filter" (KFL3B-FM 13 kHz FM filter ), anyone have one "surplus" to your needs that would be for sale? Thanks Bill K0AWU EN37ed