[ARC5] Re: [Milsurplus] Re: VHF SCR-274-N

[Mike Hanz]

Jack Antonio wrote:

> Mike Morrow wrote:
>
>> Has anyone information about when the USAAF's AN/ARC-3 and the USN's 
>> AN/ARC-1 reached deployment?
>

Not sure, but the Enola Gay had its SCR-522 changed out for an ARC-3 in 
June 1945 on its way to Tinian.  The ARC-3 is listed as a replacement 
for the SCR-522 in the evaluation of B-29 avionics in December 1944.

> The first article describes a servicing rack built by
> CASU-1 and a slightly different version built by CASU-31
> And what does CASU stand for?


Carrier Aircraft Service Unit.  CASU has a web presence - 
http://www.vpnavy.org/casu_misc.html

> The second article describes mandated rework
> of early AN/ARC-1 sets by BuAer, due to "lack of
> proper inspection at points of manufacture."
> It looks like all the CW sets from S/N 150 to
> 4000, and CAY sets from 7900 to 10000 were to
> be returned for rework.
>
> So it looks like the set was well along in service
> by the beginning of 1945.


Agree.  The November 1945 issue of Airborne Radio Maintenance Notes 
(ARMN) (19th in a monthly series) already has dozens of modification 
docs listed for the ARC-1, and it has 39 pages of detailed operational 
information.

> Other articles of interest:
> A blurb about band switching motors for the
> AN/ARC-5 being shipped without lubrication, but
> no other details. So I'm not sure if this refers to
> to the VHF receiver or the C-131 control.


VHF ARC-5.  The ARMN also lists that as a problem.

73,
Mike