[ARC5] Contract 74912 - June 29th, 1940

[Nick England]

FWIW, The USN Electronics Supply Office Directory of Communications
Equipment lists the ARA/ATA contract as NOs-74912 of 29 June 1940
AN/ARC-5 is listed as a modification of ARA/ATA and has contract NXsr-32848
of 17 June 1943
What actually happened back then I don't know, but I imagine NOs-74912 was
extended as needed until a complete renegotiation/rationalization in 1943.
You can see the listings of components at
http://www.navy-radio.com/manuals/94200/94200_1_09-2.pdf
and
http://www.navy-radio.com/manuals/94200/94200.1a_9-5.pdf
If you'd like to browse all 5000 pages in the directory, see here
http://www.navy-radio.com/manuals/94200.htm

Cheers,
Nick

Nick England K4NYW
www.navy-radio.com

On Tue, Jul 18, 2017 at 9:39 PM, Leslie Smith <vk2bcu at operamail.com> wrote:

> G'day all,
>
> Contract 74912 was issued by the Navy Dept of Ships to A.R.C. on June
> 29th, 1940.
> (See photo of nameplate from ATA set, type 52211 sn 1035.)
> BTW - the type in the photo is mis-stated.  The set is 52211, not double
> 5.
>
> Then I see another nameplate for an ARC-5 set, type T-20.
> The contract for this set was also 74912, but the ARC-5 series was
> commissioned in 1943.
>
> How should the interval between the two dates (1940 and 1943) be
> understood?
> One contract was issued for ATA and ARC-5 items?
>
>
>    73 de Les Smith
>    vk2bcu at operamail.com
>
>
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