Hi,
I am using a couple of 45MHz crystal filters in my first IF amp.
Has anyone any experience of using these, and give me any advice on
problems they encountered.
I think I have a problem with screening, as they require 700 Ohms
termination resisistance.

When the manufacturers spec a termination resistance, do the filters
themselves look like say 700 Ohms, or do I need to set this externally with
a resistance?

Best regards,
John.