FS: IF Filter set 404-573

[Robert Groh]

Cleaning up some more (I'm doing that a lot lately!) and I found this little set of crystals still in the original Heath box. The Heathkit PN is 404-573 and it consists of  4 crystals - 2 are HPN 404-574 and 2 are 404-575. Not sure what radio they were used in (HR-1680??) or even their function (pretty sure they are the 'guts' of an IF filter) but I certainly have no use for them.  Does anyone else?  $ 20 postpaid. Please contact me off list at <rgroh at swbell.net>.  

Hope you are all having (or had as the case may be) a pleasant 4th of July holiday.

73
Bob Groh, WA2CKY

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