[Milsurplus] Navy WRC-1 & URC-35 family history - Stromberg-Carlson SC-900A

[Nick England]

OK - The internet tar-baby got me today but I believe I now have a solid
history -
See https://www.navy-radio.com/xmtrs/sc-radio.htm

I have added photos and references to the SC-901X transceiver, 907, 908A,
and 910A amplifiers, 910R receiver, 910E exciter, and 905C antenna coupler.
These were sold commercially (beginning in 1961 I believe) and to the USAF
as a result of a 1959 USN R&D Contract. The Navy's R-1051, T-827, RT-618,
URC-35, URT-24, and WRC-1 resulted from this contract

Aha! - I found a patent case showing that in June 1959 the Navy contracted
with Stromberg-Carlson (General Dynamics) "to design and furnish
experimental, mock-up, and developmental models of a single sideband radio
set and a single sideband portable transceiver." (NObsr-77628, dated 16
June 1959 for AN/WRC-1 and AN/URC-35). The Navy had rights to patents
developed during the contract, but General Dynamics claimed some of the
inventions "were conceived and reduced to practice during plaintiff's own,
independent project to develop a single sideband transceiver, called the
SC900A, prior to the award of contract NObsr-77628".
That led me to the SC900A development background.
https://www.navy-radio.com/xmtrs/sc/SC900A-Board_of_Contract_Appeals_Decisions.pdf
Evidently they had a working radio before the Navy contract was signed.

Trivia - the original Navy contract referred to the AN/PRC-45 portable
transceiver and AN/URC-35 fixed transceiver. The names were later changed
to AN/URC-35 portable transceiver and AN/WRC-1 fixed transceiver.
[The URC-35 was called portable - HA!]

And finally I found this -
April 1959 Stromberg-Carlson Advertisement -
- A new approach to Single-Sideband radio by Stromberg-Carlson......
greater power output, less power input with a smaller volume.
- The SC-900A digit-tuned Single-Sideband transceiver marks a significant
advance in the state of the art.
- The SC-900A is designed for both vehicular and fixed point-to-point
communications adaptable to rack mounting and back-pack meets full military
requirements.
- Provides 28,000 stabilized channels from 2 to 30 megacycles, with a
transmitted peak envelope power output of 100 watts.
- Receive input power : 50 watts.
- Average transmit input power for voice: 150 watts.
- Available soon.

Any additional info, photos, etc. would be greatly appreciated
Nick England K4NYW
www.navy-radio.com
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