On Fri, 14 Jul 2006 05:05:27 GMT, "Ed" wrote:

Please educate me. I see one of these for sale on ebay that plugs into a
crystal socket. I know that a lot of boatanchor IF's are 455Kc, does this
generate the IF for old receivers, or is it a bandpass filter?

Your first bit of education would be to offer a link to what it is
you're talking about.