[Collins] need cw filter 75S-3

[yash at aol.com]

 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.
thanks
73 dale wt4t