Hi!

Anybody know what kind of filter this is. Surplus NOS military, part no.
241-0435-00. It says 500 KC 3DB 60KC x686-1 CCC. Manufactured 3-69.Two
soldering pins in and two out. Can it be of any use, and who is the
manufacturer? Just curious, it's laying around here.

LA6XF, Alf