[Milsurplus] BCs 638, 639, 640

Sun, 23 Nov 2003 12:36:48 EST

Clete,

SCS-1 and -2 were the WW-II Signal Corps nomenclatures (plus there were 
others, mostly SCR-xxx).  Probably by the time you joined, AAF and shortly USAF 
were calling it something out of the newer AN/ system, but the individual 
equipment nomenclature mostly did not get changed.  

AN/TRC-1, 3, 4 and AN/TRA-1 came out in late '43.  The original manual is 6 
days older than I am.  :-)

I would have thought that at least with the VHF equipment, the squadrons 
would have used the RA-62 AC supply for the SCR-522 along with the antennas and 
other components of the SCR-624 (as they did in Europe earlier).  It was powered 
by a PE-75 if shore power wasn't available.  The shift to UHF probably did 
result in a lot of ad hoc ground sets.  There was a ground power supply for the 
AN/ARC-27 (which made it an AN/GRC-32) but I'm not sure when it came out.  I 
never heard of one being built for the AN/ARC-12 so it would have had to be run 
off of 28VDC.  Judging from the TM dates, it doesn't look like the AN/GRC-27 
entered service until '51/'52, well after the war started.  But then neither 
did most of the radios and other equipment that we think of as Korean War 
vintage.

In a message dated 11/23/2003 11:05:44 AM Central Standard Time, 
[email protected] writes: 
> In my experience fighter squadrons, etc, used aircraft
> radios and 28 volt supplies for their communications.
> If the radio broke it was easy to just swap it with
> one from the radio shop.  The 522 worked better if the
> case was changed to include a good fan blowing through
> it.  AN/TRC-1 was designed for Radio Relay, but I don't
> think it was used in WWII.

73
Robert Downs - Houston
<http://www.wa5cab.com> (Web Store)
<[email protected]> (Primary email)
<[email protected]> (Backup email)

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