Heathkit 200 Hz CW Crystal Filter?

[Matt Robbins]

I came across a couple Heathkit CW Crystal filters at
a hamfest last Sunday.  I bought them and then
realized instead of 3.75 KHz it is 200 Hz. Part no.
404-620. I have never seen this filter before.
Does anyone have any information about this filter?
Thanks,
Matt

===
*******************|
Matt Robbins, N8UGD|
Heathkit Collector |
robbinsm at umich.edu |
*******************|

_____________________________________________________________
Do You Yahoo!?
Bid and sell for free at http://auctions.yahoo.com

Sponsored by the City of Tempe 

Listserver Submissions:  heath at listserv.tempe.gov
Listserver Subscription: listserv at listserv.tempe.gov - "subscribe heath 'name' 'call'"
Listserver Unsubscribe: listserv at listserv.tempe.gov - -"signoff heath"