[Milsurplus] R-1051A/URR; R-1051C/URR

[Nick England]

The A model has module labels in Italian -
https://www.radiomuseum.org/forumdata/users/6435/mil_R-1051/Fig2_a.jpg
Also the A model has RF AGC OFF toggle switch near LSB PHONE knob, and a
BFO Freq scale
I haven't found a front panel photo yet.

The 1978 USAF contract for R-1051C was made by Radionics - the photo shows
grey front s/n 001 - I don't know if there were more from Radionics. All
the other C models I have seen were black face made by General Dynamics,
presumably earlier than 1978. The R-1051C was included in the AN/GRC-157
transceiver (1kw?).
As far as I can tell, there is no difference between B and C other than the
black face.

Today's trivia - There was an attempt to get a UHF converter so the URC-35
and WRC-1 would work 225-400 mc - but I've never seen anything other than a
BuShips Journal article -
https://www.navy-radio.com/journal/src30-xn1-6510.pdf

Cheers,
Nick England K4NYW
www.navy-radio.com


On Sun, Sep 25, 2022 at 9:22 PM Nick England <navy.radio at gmail.com> wrote:

> R-1051C. USAF contract
> https://www.navy-radio.com/rcvrs/r1051/R1051C-DSCN0128.JPG
> And this one. What’s an “F” contract?
> https://www.navy-radio.com/rcvrs/r1051/r1051C-430.jpg
>
> USAF Manual Supplement for B and C
> https://www.navy-radio.com/manuals/R-1051-B-C-tech-supl.pdf
>
> The 1051A was like a B but made by Elmer in Italy. I don’t have a manual
> for it.
>
> More photos at
> https://www.navy-radio.com/rcvrs/r1051.htm
>
> Cheers
> Nick
>
> On Sun, Sep 25, 2022 at 8:35 PM Robert Downs via Milsurplus <
> milsurplus at mailman.qth.net> wrote:
>
>> Has anyone ever seen an R-1051A/URR or an R-1051C/URR?  I have a bunch of
>> different number manuals on the R-1051 but none say either A or C.  At
>> least one says that it covers the base model and the B model but doesn’t
>> mention the A.
>>
>>
>>
>> Robert Downs
>>
>>
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> --
> Nick England K4NYW
> www.navy-radio.com
>
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