Made by RCA
2-12 mc AM/CW
10 crystal controlled channels
15-20 watts output
| C-477/GRC-13 control unit
NT-26026 key for GRC-13
Mic for GRC-13 NT-51071
|FR-20/U wavemeter for GRC-13
| Crystal pack for GRC-13 NT-10527-A
PU-158/U Engine- Generator
| Need photos of PP-1711 power supply
AN/SRC-16 Specifications (from 1964 Collins catalog)
SRC-16 Communications Central Control aboard DLG-33
photo thanks to W5JV
| modern "Communications Central"
4 independent rcvr-xmtr channels
The AN/SRC-16 is a high capacity, long range HF communication system which
provides four independent transmit and four independent receive channels.
The system includes two 5 kw linear amplifiers which can be switched into
any two transmit channels in lieu of the 500 watt amplifiers normally
used. Frequency coverage is in 1 kc tuning increments over the 2.0-29.999
me range. Operating mode choice includes AM, CW, MCW, FSK, SSB, ISB and
data communication on each channel. The channel frequency of each
transmitter and receiver is phase locked to a primary frequency standard
assuring high signal stability.
The AN/SRC-23(V) is a single channel HF transmitter-receiver communications system which operates in the 2-30 MHz range.
The transmitter-receiver is automatically tuned and capable of local or remote control in either simplex or duplex modes of
operation for AM, CW, USB, LSB, ISB, AFTS, voice, or data. The equipment has a 1 KW power output; however, an alternate 5 KW RF
power output may be obtained using a 5 KW linear power amplifier.
Designed especially for shipboard installations, this transmitter-receiver group may also be used for shore-base installations and consists of eight basic units located within a cabinet.
The equipment is completely transistorized except for the use of two electron tubes. A frequency-synthesizer provides transmitter-receiver frequencies separated at 500 hertz intervals across the band. The AN/SRC-23(V) is a single-channel version of the four-channel service test NTDS (Naval Tactical Data System) AN/SRC-l6
|The AN/URC-7 is an amplitude-modulated transmitter-receiver
for short-distance radio-telephone communication. Both transmitter and
receiver have six pretuned crystal-controlled channels in the frequency
range 2000 to 7000 kc. The transmitter has an output power of 25 watts.
The transmitter, receiver, and the modulator-power supply are contained in
a single cabinet..
The AN/URC-7 is used principally in service craft and auxiliary-type ships, such as tugs, transports, tankers, and ships of the amphibious force.
|Manuf by Collins
Prototypes only - intended as replacement for TCS
2-20 mc, AM-CW, 42w output
16 present frequencies
Click here for photos and more info - thanks to K4OZY
|CBS Labs prototype 1955
|Photos, info and
HF SSB transceiver
Collins KWT-6 family
|Photos, info and manual downloads
|6 channel HF AM transceiver (2-9 mc)
|3 x 6146 final, 2x 6146 modulators
C-2521/URC remote control
MD-336/URC-34 modulator & p/s
(MD-337 for AN/URC-34X)
Manual NAVSHIPS 93349
|modern HF SSB transceiver
2-30 mc, 100w
C-9044/URC-35 remote control
used with CU-937/UR antenna coupler
predecessor - General Dynamics SC-series
C-9044/URC-35 remote control
(V) 1 shock mount
RF-280A and URC-94(V)1
- thanks to KA3EKH
|J-3641/URC-94 junction box
|Harris "Pacer Bounce" RF-350 series
|RT-1446/URC 100w transceiver
AM-7224/URC 1 kw linear amp
|AN/URA-38C antenna coupler
C-11329/URC remote control
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
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 Communications"- 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 ruggedized, PC workstation with full ASCII keyboard and pointer for function selection/ activation; redundant control buses and subsystem controllers for system survivability.
AN/WRA-1 SSB Transceiver
RT-645/WRA-1 SSB Transceiver
Connects to TBL, TBM, SRT-14, or similar transmitter as power amplifier
CN-513 is a regulated screen supply for TBL
CU-701 is a buffer amp to drive TBL
|1963 AN/WRC-1 article
AN/WRC-1B and CU-937/UR Manual
|modern HF SSB transceiver
predecessor equipment- General Dynamics SC-series
|4-channel , 2.2-30 mc SSB
A small number were installed for interim testing before military SSB equipment was procured.
Used with SRA-25 antenna tuner
(photos thanks to Brian WA5UEK)
RCA SSB-1 Transceiver
RCA SSB HF transceiver 60 watts
Commercial unit used extensively by USN before military SSB equipment was procured
used with AN/SRA-20 antenna tuner