[Collins] 32S-1 grid problem found

[Glen Zook]

The basic grid circuit is definitely different from
any of the manuals and there is definitely glyptol on
the solder joints.

The feed through is located just to the right (when
viewed from the front of the transmitter) of the rear
most slug in the tuning rack.  When viewed fron the
top this feed through is virtually hidden by the
tuning rack.  There is a piece of "sub miniature"
coaxial cable that comes through a cutout under the
final tank cage that runs to this feed through.  The
shield of the coax is connected to a solder lug that
is held in place by the "nut" that secures the feed
through to the chassis.  The center conductor of the
coax is soldered to the feed through.

The feed through is ceramic (remember, the transmitter
was designed before Teflon was being used).

Worse comes to worse I can probably make one from a
very short section of the center conductor and
insulator from a piece of RG8/U or RG213/U.  The hole
is just about that size in diameter (3/8 inch
diameter).  I will have to go through my "junque box"
and find a second nut to put on the underside of the
chassis to hold the "home brew" feed through in place.
 A nut should cut its own threads in the insulation
material of the coaxial cable.

Glen, K9STH

--- Gerald <geraldj at ispwest.com> wrote:

Teflon feed through? Or phenolic. I can't find it in
pictures above or below chassis in my manuals.

So, is the schematic still different or has it been
just complicated by the prior repairs?

Glen, K9STH

Web sites

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


		
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