[Collins] need cw filter 75S-3

[Glen Zook]

There is an error in the 75S-3 / 75S-3A manual.  It states that the CW filter is 300 Hz.  However, at least in my 75S-3A and in the 75S-3 that I owned for quite a while, 200 Hz is how the filter is marked.  Also, the Collins advertisements for the 75S-3 and 75S-3A state 200 Hz.

In addition, the filter in my 75S-3A definitely measures 200 Hz, the 300 Hz points are quite a ways down (150 Hz to either side of center).

Glen, K9STH

Website:  http://k9sth.com


--- On Tue, 5/31/11, yash at aol.com <yash at aol.com> wrote:

Iam in need a a cw filter for my 75-S3  ,I beleive its 300cps ,but 200 to 500 cps would also work,I think. I contacted Inrad, they have filters for the 75S-3  B/C with mounting board to snap in. I asked if the filter could be removed from the board and installed into a 75S-3, they said ,didn't think so. If anyone has the proper cw filter ,please get back.  or has another solution for the problem.