[Heathkit] crystal filter part number help needed

[Michael Tortorella]

Good morning, all,

I am new to the list and hope to learn more about my Heath equipment =
from visitng with y'all.  I have a spare crystal filter, part # =
N404-200, which I thought was the 400 Hz CW filter for my SB-303, but I =
have not been able to confirm this from the parts list in the manual.  =
Can someone please help match a function to this part number?

Thanks and 73,
Mike W2IY

--- StripMime Report -- processed MIME parts ---
multipart/alternative
  text/plain (text body -- kept)
  text/html
The reason this message is shown is because the post was in HTML
or had an attachment.  Attachments are not allowed.  To learn how
to post in Plain-Text go to: http://www.expita.com/nomime.html  ---