[Collins] part id

[antqradio at sbcglobal.net]

Glenn
I looked into the part number 543-1352-013.  The closest one in the KWT-6 Descriptions is 543-1351-004 which is for the Balanced Modulator Plug-in Assembly which isn't a board at all but an aluminum plug-in module with covers.  If you can send a photo, I should be able to recognize if it is indeed a KWT-6 module.

I have a 310F-6 and a 310F-1 here.  The -6 is my test bed for checking and repairing modules for the ARC-58 family of radios.  The 310F-6 is the same as a KWT-6 except that as a receiver-exciter, it doesn't have the Antenna Tuner, PA or HVPS but otherwise has all of the other modules.
Jim


________________________________
 From: Dr. Gerald N. Johnson <geraldj at netins.net>
To: collins at mailman.qth.net 
Sent: Sunday, August 17, 2014 8:16 PM
Subject: Re: [Collins] part id
 

In 2003 you thought that board make have come from a URC 32
www.qth.net/pipermail/milsurplus/2003-December/006320.html. Which is a 
KWT-6. If so there is a slight chance of finding a manual on line and 
confirming that supposition and maybe identifying the parts. It might 
take some circuit analysis to determine the characteristics of the 
transformer if not described in the parts list. Google didn't find the 
transformer part number, and had only hit of the board number.
I don't remember if I have a URC 32 manual or not.

Google says that's a KWT-6 with manuals offered at:
www.virhistory.com/navy/xmtrs/urc32/index.htm

The part list is at:
www.virhistory.com/navy/xmtrs/urc32/NAV-Vol-3-parts-list.PDF but hasn't
been OCR'd so its not computer searchable. It does show a mechanical 
filter was 455 kHz, 200 Hz bandwidth. There are probably more than a 
couple and I see one board with 300 kHz IF transformers. They do list 
circuit boards, but I was up so early this morning that if I try to read 
to the end of the list, I'll wake up here at the computer tomorrow.

73, Jerry, K0CQ, Technical Adviser to the Collins Radio Association.





On 8/17/2014 4:40 PM, Glenn Little wrote:
> I have a part of a board marked 543 1353 013.
> On this board is a 6 leaded sealed transformer, possibly a pulse
> transformer, marked 177 1147 009.
> Before I scrap what is left of this board, can anyone tell me the parent
> equipment and what the transformer is?
>
> Thanks
> Glenn
> WB4UIV
>
>
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