[Collins] 51S-1

[Jim Whartenby]

Hi Lynn, thanks for the reply.
I think finding a KWM-2 for the cabinet would be a mixed blessing.  I would want 
to restore the transceiver!  I was in Ground Radio when I was in the Air Force 
many years ago.  Among other things, I worked on Mars KWM-2As along with the 30L 
and 30S-1 amplifiers.  Mostly worked on UHF equipment like the GRA-53 / -54, 
GRC-27, GRT-3 beasts and then there was the TRC-89 van with the KWT-6 in it.  I 
really like the KWT-6.

Plan B is to install the 51S-1 in a rack mount cabinet that I already have along 
with a small 5 amp switching power supply and a fan.

I am afraid that I will have to re-engineer the 28 volt power supply and draw 
the schematic.  I have to take it apart to check caps anyway so it hopefully 
won't take too long.  Still, I think it is a copy of a Collins product that was 
made with a lot of skill.  There is no wasted space that I can see when the 
cover is removed.  All components are packed in tightly.  If it is HB, then the 
guy really knew what he was doing, this is no slap-it-together project.


This long vacation finds me in Washington, about 100 miles north of Portland, 
OR.  Any places to visit to see boatanchors?  Next week begins a slow trek back 
to Arkansas.
Regards,
Jim


----- Original Message ----
From: "kb6oks at juno.com" <kb6oks at juno.com>
To: antqradio at sbcglobal.net
Sent: Tue, August 16, 2011 7:46:40 AM
Subject: Re: [Collins] 51S-1

Jim
My 51S-1 also came with out a case and was originally rack mounted.  I found a 
case from a KWM-2 that was not in the best shape and did some body work to make 
it look good.  I simply took and enlarged the smaller cutout on the back to look 
exactly liked the large cutout and it fits on the 51S-1 perfectly.  Now it is 
just time for a trip to the paint booth and I don't think anyone will ever know 
it was not an original receiver case.  You may want to keep on the lookout for a 
KW2 case and do the mod that I did.  

Interesting configuration on the power supply!
Lynn WR7G  

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