Space Varmint
New Member
I bought a bag of cheap 455KHz ceramic filters. I could not get a data sheet because Digi-Key discontinued them. It has 3 pins. I assumed the center pin is ground. Anyway I could not get it to work worth a crap. Anyone have familiarity with these? I mean all my original frequencies pass right through the thing. I have a mechanical 455KHz filter that came out of a Collins transceiver but it is huge. I might try making a crystal filter from the crystals I have. Is 10.240 Mhz a good one? I mean one of the standards? I don't hear anything there.