US Navy Shipboard Transmitters & Transceivers

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My main interest is in HF communications in the 1950's and early 1960's but this is a work in progress
Please send me e-mail with additions, corrections, links, photos, etc. - thanks, Nick K4NYW

WW2 Transmitters and Transceivers - under construction

HF & MF AM/CW/FSK Transmitters
Equipment	Photo	Specs	Manual & Links
AN/SRT-14		100w LF/HF xmtr 300kc-20mc 4-400 final AM/CW/FSK manuf by Federal similar to AN/URT-2 includes - TN-229/SRT antenna tuner CU-372/SRT antenna coupler CU-402/SRT load adjusting unit	NAVSHIPS 92121(A)
AN/SRT-15		LF/HF xmtr 100w 300kc-2mc 500w 2mc-26mc 4-400 final AM/CW/FSK manuf by Federal similar to AN/URT-3 SRT-14 plus "booster" (high-power modulator and 3000v power supply)	NAVSHIPS 92121(A)
AN/SRT-16	two SRT-14 plus one "booster"	LF/HF dual xmtr 100w 300kc-2mc 500w 2mc-26mc 4-400 final AM/CW/FSK manuf by Federal similar to AN/URT-4	NAVSHIPS 92121(A)
AN/SRT-17(XN-1)	prototype - what is it?	manuf by RCA 1959	NAVSHIPS 92944
AN/SRT-20(XN-1) AM-1976(XN-1)/SRT	prototype - what is it?	Manuf by ? Amplifier design modified by Advanced Technology Corp 1960	NAVSHIPS 93275
AN/URC-7 transmitter-receiver USCG		-	-
AN/URC-8(XN-1) R-627/URC-8 T-474/URC-8 Transmitter-Receiver			Manuf by Collins Prototypes only - intended as replacement for TCS 2-20 mc, AM-CW, 42w output 16 present frequencies PTO or xtal control (4 xtals) Click here for photos and more info - thanks to K4OZY
AN/URT-2 AN/URT-3 AN/URT-4	Photos - Accessory Units	primarily shipboard use 100w 300kc-26mc (URT-3, -4 also 500w 2mc-26mc) 4-400 final AM/CW/FSK 10 channel remote select (preset frequencies + automatic tuning) design & manuf by Federal - see "An automatic tuning communication transmitter" Dettman, M. IRE International Convention Record Volume 1, Issue , Mar 1953 Page(s): 137 - 144 Essentially an auto-tune version of SRT-14, 15, 16 - design predates SRT-14 series OA-353 Transmitter assembly C-916/URT remote control Auto antenna tuner OA-297/URT controller group + CB-5/URT capacitor tuning unit + TN-197/URT inductor tuning unit Optional "booster" OA-354/URT (3kv p/s + pair 4-125 modulator) URT-2 is 100 watts URT-3 is 500 watts with booster URT-4 is two URT-2 + booster	NAVSHIPS 91833 NAVSHIPS 92877? Additional information My URT-3 restoration project
AN/URT-12 T-408/URT-12 Coast Guard only?	more photos	75w HF 2-30 mc AM/CW pair 4-65's modulated by 4-65's manuf by Radiomarine photos thanks to Sam KF4TXQ	-
AN/WRT-1 AN/WRT-1A LF Transmitter		300-1500 kc AM/CW/FSK 125w AM 500w CW/FSK	NAVSHIPS 93483(A) Download 64.9 MB pdf
HF SSB TRANSMITTERS & TRANSCEIVERS
AN/SRC-16 Transceiver		modern "Communications Central" 4 independent rcvr-xmtr channels 2-30mc, SSB/CW/NTDS, 500w PEP	need to add more info
AN/SRC-23		Single channel version of AN/SRC-16Modern SSB transceiver 2-30mc CW/SSB, 1kw PEP	need to add more info
AN/URC-32 AN/URC-32A AN/URC-32B Transceiver	Photos, info, and manuals	HF SSB transceiver 2-30mc, CW/SSB, 500w Collins KWT-6 family	Info and manuals
AN/URC-35 Transceiver		modern HF SSB transceiver 2-30 mc, 100w	RT-618/UR transceiver AM/3007/UR amplifier used with CU-937/UR antenna coupler need to add info
AN/URT-23 Transmitter		modern HF SSB transmitter 2-30mc,1kw	T-827/URT - exciter AM-3924/URT - RF amplifier PP-3916/UR - power supply MT-4670/URT-23 - shock mount used with AN/URA-38 - antenna coupler group C-3698/URA-38 - controller CU-938/URA-38 - coupler manuf by Harris Photos and Info Mil Spec MIL-T-28706F here
AN/WRC-1 Transmitter-Receiver		modern HF SSB transceiver 2-30mc, 100w	R-1051/URR receiver T-827/URT exciter AM-3007/UR power amplifier used with CU-937/UR antenna coupler need to add more info
AN/WRT-2 Transmitter		2-30 mc transmitter 500W CW, FSK, AM 1000w SSB/ISB	-
AN/URC-131(V) HFRG Transceiver		Modern High Frequency Radio Group	-
AN/URC-131(V) HFRG Transceiver	High Frequency Radio Group (HFRG) is a fully automated subsystem of the external radio communications system (RCS) aboard surface ships. The HFRG operates in the Very Low Frequency (VLF), Low Frequency (LF), Medium Frequency (MF) and High Frequency (HF) bands and supports full duplex, half duplex and simplex operation for tactical and long-haul voice, interrupted continuous-wave, teletype and digital data communications in the Lower Sideband (LSB), Upper Sideband (USB), Independent Sideband (ISB), Amplitude Modulation Equivalent (AME) and Link 11 modes of operation. The HFRG consists of three subsystems: the Transmit Subsystem, the Receive Subsystem and the Control/Monitor Subsystem (CMS). Transmit Subsystem: The Transmit Subsystem operates (in increments of 10 Hz) in the frequency range of 2 Mhz to 30 Mhz and is used primarily for broadband circuits. The Transmit subsystem is designed to allow all exciters to operate in the Link 11 mode, but contains the assets required to support two (2) 1kW narrowband circuits which are the primary HF Link 11 circuits. The operational capabilities of the transmit subsystem require both broadband and narrowband antennas. The operational configuration of the transmit subsystem is accomplished in response to commands from the CMS and frequency changes (except narrowband) are completed in less than 100 milliseconds. The transmit subsystem reports to the CMS when the system is configured and also reports detected failures. Receive Subsystem: The Receive Subsystem operates (in increments of 10 Hz) in the frequency range of 14 Khz to 1.619 Mhz and 2 Mhz to 30 Mhz. The receive subsystem requires at least two broadband antennas and 1 or 2 additional antennas dedicated to the use of the Ship Signal Exploitation Equipment (SSEE). The operational configuration of the receive subsystem is accomplished in response to commands from the CMS and frequency changes are completed in less than 20 milliseconds. The receive subsystem reports to the CMS when the system is configured and also reports detected failures. Control/Monitor Subsystem (CMS) The Control/Monitor Subsystem is the backup point of control for the HFRG when the system is being controlled by the Surface Ship Automated Communications Control System (SSACCS) (part of the Communications Support System (CSS)). The SSACCS normally controls the HFRG through an interface with the CMS, but if the SSACCS becomes inoperable the CMS automatically assumes the functions of remote control, performance monitoring, test, operator interface, and display of the operational characteristics. The CMS is used to send configuration commands to the transmit and receive subsystems and, in turn, receive configuration completion and operational characteristics from these subsystems. From "Jane's Military Communiocations"- The AN/ URC-131(V) High Frequency Radio Group (HFRG) system is an integrated, solid-state naval communications suite, designed to provide a balance between transmitter and receiver performance in a co-located shipboard environment. The three main communications components of the AN/URC-131 (V) are the Broadband Transmit Group (BTG), the Narrowband Transmit Group (NTG) and the receive system. The third-generation BTG is of solid-state design and provides coverage of the 2 to 30 MHz band. Three BTG variants have been produced - a 4 kW (8 circuit) system, an 8 kW (17 circuit) system and a 12 kW (26 circuit) system. All three systems use only two topside broadband antennas. The NTG consists of up to three solid-state 1 kW transmitters with power post-selectors and digital antenna couplers. The NTG can be tuned in the presence of adjacent antenna interference and offers completely silent tuning. It has a rapid-tune digital antenna coupler. It can also serve as a stand-alone system aboard small ship platforms. The receive system's R- 2557A/ URC receiver operates over the full LF, MF and HF frequency range from 10 kHz to 30 MHz. Other features include: up to 49 receive circuits; passive antennas, which require no electronics topside; and an atmospheric noise-limited design. The HFRG's HFRG Remote Control/ Monitor Subsystem (RCMS) is designed for 'lights out' operation in the transmitter and receiver compartments. Its features include: a ruggedised, PC workstation with full ASCII keyboard and pointer for function selection/ activation; redundant control buses and subsystem controllers for system survivability.
Collins KWS-1 Transmitter	Collins KWS-1 SSB transmitter	procured 1956 with modified 75A-4 for SSB experiments	NAVSHIPS 92787
Eldico S-100 SSB transmitter-receiver	1959 spec sheet		4-channel 2.2-30 mc SSB Installed for interim testing before military SSB equipment was procured. used with AN/SRA-25 antenna tuner
RCA SSB-1 Transceiver	More SSB-1 photos and info	RCA SSB HF transceiver 60 watts 4-channel, crystal controlled 3-15 mc pair of 6146 output (3x 6146 in later models) Commercial unit used extensively by USN before military equipment was procured	NAVSHIPS 92917 SSB-1 block diagram used with AN/SRA-20 antenna tuner More SSB-1 photos and info
VHF/UHF TRANSMITTERS & Transceivers
TED-6 Transmitter		UHF 225-400 mc AM 15 watts output	NAVSHIPS 91357
AM-1365/URT Amplifier		UHF amplifier for TED manuf Manson Lab	NAVSHIPS 92549
SRC-17 Transceiver	need photo	UHF transceiver	NAVSHIPS 94127
AN/URC-9 AN/SRC-20 AN/SRC-21 Transceiver	AN/SRC-20 More photos	UHF transceivers 225-400 mc AM manuf Collins AN/SRC-21	More photos AN/SRC-20 (100 watts) AM-1565/URC amplifier AN/URC-9 transceiver RT-581/URC-9 PP-2702/URC-9) C-3866/SRC control AN/SRC-21 (16 watts) AN/URC-9 transceiver RT-581/URC-9 PP-2702/URC-9) C-3866/SRC control "A" version has 0.05mc channel spacing, "non-A" has 0.1mc channel spacing. NAVSHIPS 0967-032-5000 NAVSHIPS 0967-125-6000 NAVSHIPS 0967-378-2000 NAVSHIPS 0967-438-9000
AN/SRC-31 NTDS Transceiver		UHF data link transceiver 225-400 mc, 0.05mc channel spacing 300w AM, 1500w CW/FSK	-
AN/URT-7 AN/URT-7A AN/URT-7B AN/URT-7C Transmitter		VHF xmtr 115-156 mc AM two 4x150A finals, 30w output xtal controlled - 4 channels Transmitter T-336/URT-7 including - Amp/Osc AM-638/URT - Modulator MD-163/URT - Power Supply PP-773/URT manuf URT-7C Rauland-Borg 1956	Photo - URT-7 & accessories Photo - Controls Figure - Block Diagram NAVSHIPS 91684 (URT-7) NAVSHIPS 92832 (URT-7C)