[Collins] R-390A filter

Glen Zook [email protected]
Tue, 14 Oct 2003 09:40:27 -0700 (PDT)


There also was a 16 KHz wide filter.  Fair Radio of
Lima, Ohio, used to sell the 16, 8, 4, and 2 KHz
filters for around $20 each but now have run out. 
Those filters, when mated with the proper 9 pin plug,
work very well in the 75A4.  I use one of the 8 KHz
ones as the AM filter in my 75A4.  Isn't as "pretty"
as the stock filter, but works!

Glen, K9STH


--- "Dr. Gerald N. Johnson, electrical engineer" 

I'm remembering that the mechanical filters were 8, 4,
2, and 1 KHz bandwidth

=====
Glen, K9STH

Web sites

http://home.comcast.net/~k9sth
http://home.comcast.net/~zcomco
Contributing Editor Collins Journal

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