[Milsurplus] Mystery Command Set remote dials

[Brenda Gentry]

I think the control box is for a post-WW2 ARC brand receiver with a loop 
antenna. ARC made and sold them commercially, and there may have been an 
AN/.....  version as well. They were intended for the postwar aviation 
boom that never materialized when non-direction beacons and four course 
radio ranges were still in common use.  It would be a few years before 
the VAR and VOR ranges would start to replace LF navaids. The loop 
antenna looked a lot like the one for a Bendix MN-26, but was somewhat 
smaller. Unlike the Bendix MN-26 and some versions of the BC-433?  I 
don't think it had a course deviation indicator, it was up to the user 
to resolve the 180 degree ambiguity.

    B. Gentry, KA2IVY

On 10/17/25 12:33 PM, B. Smith via Milsurplus wrote:
> Looks like A.R.C to me
> K4CHE
>
>
> On 10/16/2025 11:41 PM, hwhall--- via Milsurplus wrote:
>> I have a question about a couple of stray dials here. These appear to be Command Set remote tuning control dials. One (on right in attached composite photo) has the expected knurled thumbscrew for attaching the dial to the control unit. The other two have instead three holes. Note that the thumbscrew dial has the same E5614 number as one with the holes.
>>
>> The ones with holes have an "ARC" stamping on the reverse side along with different part numbers. The .2-.55 dial says "PART 12555". The .52-1.5 dial says "PART 14041".
>>
>> I've drawn only blanks looking for these part numbers online & in the ARC and SCR manuals I have downloaded. The closest I found was part 5610 which is .52-1.5 for the R-24 set, and part 5613 which is .2-.55 for the R-23 set.
>>
>> Any insights out there as to where these belonged? Maybe not Command Set material at all, but where would I start looking?
>>
>> Thanks!
>>
>> Wayne
>> WB4OGM
>>
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