[Milsurplus] Re: Beginning of use of UHF aero radios

[WA5CAB at cs.com]

Mike,

That's what I suspected (earlier than 1947 production) given that the 
shipboard sets were already in the 1946 reference.  But had no documentation to back 
it up.

In a message dated 12/19/2004 12:26:45 PM Central Standard Time, 
AAF-Radio-1 at cox.net writes: 
> >Earliest UHF aircraft set manual that I can find that I have a date on is 
> AN 
> >16-30ARC12-3, Handbook of Maintenance Instruction Radio Set AN/ARC-12 dated 
> 01 
> >September 1947. 
> >
> 
> I have that manual, but I have a feeling it is for the postwar buy of 
> these transceivers, an earlier production run appearing to have been a 
> Navy driven requirement whose acquisition was contracted under 
> NOa(s)-8930, the label on the two I have here.  There was a follow-on 
> contract - NOa(s)-8934 - on a parts unit downstairs and that is 
> mentioned in the 1947 manual as being a Navy contract under which 
> purchases were already flowing.  The _History of Engineering Science in 
> the Bell System_ sez that Western Electric produced 1,200 of these sets, 
> developed by Bell Labs - presumably before the war's end, as most of the 
> footnotes for the chapter are historical reviews published in 1946.  It 
> also mentions Bell Labs developing the AN/ARC-19, which looks a little 
> bit like the ARC-27 in frontal aspect ratio.  Interestingly enough, I 
> have a thick ARC-19 manual produced by Bendix in 1950, but it details an 
> ARC-19(XA-3) that bears no resemblance to the picture of the Bell Labs 
> model, even to having a separate transmitter and receiver, reversing the 
> integration concept.  Go figure.... 
> 
> The CO-NAVAER 08-5Q-227 dated 15 September 1945 lists the following:
> 
> AN/ARC-12
> AN/ARC-13
> AN/ARC-19
> 

Robert Downs - Houston
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