General Dynamics (Stromberg-Carlson) SC Series Radio Equipment

History

• Which came first? This SC-series or the Navy's RT-618, etc.? - the SC-901X, etc. manuals are copyright 1961
  The SC-series tunes in 1 kc increments, but the Navy equipment tuned in 500cps (later 100 cps) increments
• Aha! - a patent case shows 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" See here for the SC-900A development background.
• 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 is portable - HA!
• WRC-1 procurement background - 
• 1962 WRC-1 and URC-35 development report
• AN/URC-35 pre-production model specification - required changes from prototype model (SC-900A or SC-901X?)

March 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.

SC-901X and SC-901X-A Receiver-Exciter (comparable to RT-618/URC)
Manual - thanks to Jim Whartenby
SC-901S Power Supply

Used by USAF with SC-908 amp at Atlas, Minuteman, and Titan missile sites
 - Titan site radio rack photo

Also see June 1992 Electric Radio magazine

SC-901S power supply - Fair Radio 5/24

SC-905C Semi-Automatic Antenna Coupler (comparable to CU-937/UR) - 1961 manual 

SC-907 Amplifier & Power Supply - manual copyright October 1961 - no other info yet

SC-908A Amplifier (comparable to AM-3924/URT)
SC-908S Power Supply

Pusher = ?
Driver = 8117 (DX195)
PA = PL-8295

SC-910 Transmitter-Receiver System (Comparable to AN/WRC-1)

SC-910A 100w Amplifier (comparable to AM-3007/URC) - 1961 manual

SC-910E Exciter (Comparable to T-827/URT) - 1961 manual

SC-910R Receiver (Comparable to R-1051/URR) - 1961 manual - 1963 spec sheet  

SC-940F Auxiliary Unit

Titan installation photo