[GreenKeys] Tape Relay Equipment

[WA5CAB at cs.com]

(a) The AN nomenclature system started up in 1942.  The earliest complete 
listing I have is dated June 1943.

(b)  AN/TGC-1 dates from June 1944.  It stayed in service until the mid or 
late 50's (last TM Change was 03/23/53).  I once had two complete operational 
AN/TGC-1B's.  Unfortunately, when I was forced to move to Houston in 1973 I had 
to shed the cabinets.  Each unit was about the size of a large 
refrigerator-freezer and contained two M14 typing reperfs with tape takeup reels, a 3-head TD 
(two for the reperfs plus an order wire), a loop supply and storage space..  
The units I had came out of Barksdale AFB and only the main cabinets had AN 
nomenclature tags.  The other units had Teletype nameplates.

FWIW, the TG-7-A,-B (M15) did not have military nomenclature assigned to 
anything on the printer except the complete printer  either.  Chests and other 
items associated did.  I still have a couple of TG-7-B's.

In a message dated 5/17/2008 8:57:47 PM Central Daylight Time, gil at baudot.net 
writes: 
> It occured to me that the unit you (Bob) may have might/might not be
> late WW II
> or post war. Here is why: The Army-Navy ("AN/") system didn't come
> into being until after the war. Prior to, and during most of WW II, the
> Army and Navy generally used the commercial model numbers, and 
> didn't have nomenclatures of their own for their equipment. Of course,
> much WW II comm gear was, of necessity, commercial, off-the-shelf
> stuff, rather than a standard military model. So, I am wondering if
> there
> is a model number on that AN/TGC-1, or how it was nomenclatured
> as such.

Robert Downs - Houston
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