I have two crystal filters for building a receiver or transceiver or for radio repair: 1) UF-074A 7.8Mhz Filter with 7.7975Mhz and 7.8025Mhz Crystals for $15 plus shipping 2) FEC-113-3 No. F4G2 11.2735Mhz Filter with 11.272Mhz and 11.275Mhz Crystals $15 plus shipping 73 Kees K5BCQ