[Collins] 32S-1 grid problem found

[Glen Zook]

I found the source of the reverse reading grid meter
in the 32S-1 that I have been working on.  There is a
feed through (not a feed through capacitor, just a
feed through) that connects the grid coils with a
piece of miniature coax that goes to the
neutralization capacitor.  Somehow that feed through
had developed into a resistor with about 650 K ohms to
ground instead of being basically infinity.  This feed
through is located at the rear of the chassis under
the tuning rack.

Someone had thought that one of the fixed capacitors
in the grid circuit was bad and replaced it not doing
that good of a job in the process.  However, the
capacitor connections were over an inch away from the
feed through and the feed through had not been
touched.

Now to find a feed through to replace the bad one.

Glen, K9STH

Web sites

http://home.comcast.net/~k9sth
http://home.comcast.net/~zcomco


		
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