AOR/Annapolis/IRE/Iroquois/Mackenzie/St. Laurent Classes -
Remote Control Systems
 
REMOTE CONTROL SYSTEM EQUIPMENT SUMMARY LISTINGS
The equipment is listed in the identical order to that of the source material.
Model  Description  Comments
AN/URA-501 consisting of: Remote Control System  
RCU1/C 5120 Remote Control Unit Single channel unit. No cover. Stock #5820-21-402-2002 
RCU1A/C 5120A Remote Control Unit Single channel unit with watertight cover.
Stock #5820-21-402-2006
RCU4/C 5121 Remote Control Unit Four channel unit. Can select up to 4 radio systems. No cover. Stock #5820-21-402-2003.
See Featured Equipment section.
RCU4A/C 5121A Remote Control Unit Four channel unit. Can select up to 4 radio systems with watertight cover. Stock #5820-21-402-2007
RSU/SB 5055 Receiver Switching Unit Stock # 5820-21-402-2005. 
See Featured Equipment section.
CSU Channel Switching Unit Supports up to 10 RCU's and 5 CAU's. A row of red and green lamps indicate receive/standby or transmit status of each of the 5 radio channels. Stock #5820-21-402-2004
CAU/AM-5143 Channel Amplifier Unit Vacuum tube version. Stock #5820-21-400-2004 
CAU/AM-5143 Channel Amplifier Unit  Solid state conversion with speech compression feature. Stock #5820-21-400-2004
AN/SRA-504 consisting of: Remote Control System  
AM 5224  Amplifier Power Supply See Featured Equipment section.
SB 5086/SRA-504 Audio Patch Panel  See Featured Equipment section and SRA-504 system description.
C 5205/SRA-504 Control Indicator See Featured Equipment section.
C 5206/SRD-504 Control Indicator For AOR Class.  (Image courtesy RCN) 
C 5207 Control Radio Set See Featured Equipment section and SRA-504 system description.
OJ 5002/SRA-504 Remote Operate Console See Featured Equipment section and SRA-504 system description.
C 5208  Control PS See SRA-504 system description.
MX 5128 MF Adapter Same function as HF adapter.
MX 5129  HF Adapter See SRA-504 system description.
MX 5130  VHF Adapter See SRA-504 system description.
MX 5131/SRA-504 Adapter Control To Intercom See Featured Equipment section.
J 5091  Jackbox See SRA-504 system description.
PP 5200  Power Supply See SRA-504 system description.
AM 5233 Audio Amplifier See SRA-504 system description.
SAC Switch Assembly Converter See Featured Equipment section.
EQUIPMENT HOLDINGS PER SHIP (1985) 
List 8 List 9    
LEGEND:
ISL= Improved St. Laurent Class
IRE= Improved Restigouche Class
MACK= Mackenzie Class
ANS= Annapolis Class
TRIBAL = 280 Class
AOR = Supply ships 
SUB= Submarine

AN/SRA 504 - RADIO REMOTE OPERATING SYSTEM -
DESCRIPTION OF SYSTEM COMPONENTS

C 5205/SRA-504
Control indicator for DDH 280 designed to accept 20 transmit/receive circuits and provide a ready/busy status indicator for the TX section of these circuits. In addition, any of the 10 circuits can be allocated to the 10 channels of the Control Radio Set. It also allows any one of the 20 transmit/receive circuits to be switched into any of the 5 monitoring positions.

C 5206/SRA-504
Control indicator for the AOR is designed to accept 10 transmit/receive circuits and provide a ready/busy indicator. In addition any of the 10 circuits can be allocated to the monitoring position.

SA 5042/SRA-504
Matrix signal routing switch providing the capability of connecting 10 six level inputs to any of 10 six level outputs. (Not shown)

OG 5001/SRA-504
Amplifier Power Supply Group (APS) provides the following functions:
a) amplifies the received signal to drive the CRS.
b) while transmitting, provides a side tone for the CRS.
c) Presence of keyline voltages is detected and "Ready" indicators are energized.
d) Operation of a PTT switch or key connected to the circuit is detected and the associated transmitter is keyed as well as the "Busy" indicator is illuminated.

C 5207/SRA-504
Control Radio Set (CRS) permits the remote operator to obtain access to anyone of ten communications channels available from the associated matrix.

SB 5086/SRA-504
Switchboard patching Communications is where the audio and keylines from transmitters, receivers and adapters enter the Receiver/ Transmitter Control system and are allocated to various channel amplifier modules or in some cases (such as RATT and Link 11) to equipment outside the receiver/transmitter control system.

OJ 5002/SRA-504

Console consists of the following:
a) Up to 8 remote controls for AN/SRC 503/ WRC 501
b) Up to 6 TX/RX controls or AF/RF indicators for the AN/SRC 23
c) CCR monitor positions 1 and 2
d) Intercom System (AN/SIC503)
e) Control indicator (either C5205 or C5206)
f) Matrix switch assemblies (SA5042)
g) Control Power Supply (C5208)
h) Waste paper container
i) Jacks for headset/handset and CW keying
j) Automatic ship's telephone
k) Pull out shelf for typewriter.
l ) Two drawer filing cabinet

C5208/SRA-504
Control Power Supply contains main breaker, subsidiary switches, fuses and a fault alarm for the PP 5200

MX 5129/SRA-504
Adapter provides facilities for the conversion of the HF transmitter (AN/SRC 23) audio and keyline to the standards of the AN/SRA 504 system

MX 5130/SRA-504
Adapter provides for the conversion of VHF/ UHF transmitter and receiver (AN/SRC 509, AN/VRC 49, AN/SRC 503, AN/WRC 501) audio and keyline to the standards of the AN/ SRA 504 System

MX 5131/SRA-504
Adapter control intercom accepts the outputs of two CRS and the ships intercom system and combines them into a binaural headset (Intercom on left ear and selected CRS right ear)

J 5091/SRA 504
Jackbox provides facilities for connecting an operator in the CCR to the AN/SRA 504 system (three monitor position).

PP 5200/SRA-504
Power Supply provides DC power to operate the matrix and all the indicator lights in the control indicator. Control located in console but power supply in separate rack -not shown

AM 5233/SRA-504
Amplifier, audio frequency provides audio amplification of the maximum CRS output available from the handset/headset jacks to the level required for the landing Safety Officer console positions. (not  shown)


FEATURED EQUIPMENT
CHANNEL AMPLIFIER UNIT (CAU)
980s_remote_control_cau.jpg
CAU/AM-5143. This is the vacuum tube version of the CAU. In spite of a difference in capability offered by the speech compression feature in the solid state version of the CAU, they both bear the same designators and stock numbers. (Image courtesy Canadian Navy) 
1980s_remote_control_cau_ss.jpg
CAU/AM-5143 - Solid state version. The only difference between the vacuum and solid state versions of the CAU is the inclusion of the Compression In/Out switch just above the nameplate.  Otherwise, they are completely identical when viewed from the front. (Photo by Jerry Proc)
cau_ss_topview.jpg
CAU/AM-5143. Top view of the solid state version. (Photo by Jerry Proc)

CHANNEL SWITCHING UNIT (CSU)

1980s_remote_control_csu.jpg
CSU.  Each unit in this array allows up to ten different Remote Control Units to be switched or shared between five different transmitter/receiver pairs. By moving a slide switch, any RCU could be connected to any available radio channel. Once a slide switch was set to a particular position, the RCU could only communicate with one particular transmitter/receiver pair. There can only be a maximum of 4 RCU's attached to one radio channel. (Image courtesy Canadian Navy) 

 
1980s_remote_control_csu_down_position.jpg
In this 3 by 3 CSU installation aboard HMCS HAIDA, all the CSU's have been swung into the maintenance position. (Photo by Jerry Proc) 

RCU 1

1980s_remote_control_rcu1.jpg
RCU1/C 5120. Single Channel RCU. (Photo by Jerry Proc)

RCU4

1980s_remote_control_rcu4.jpg
RCU4/C 5121. With the selector switch, this RCU can connect the operator to four different radio channels. This unit does not have the telephone style handset installed. Morse keys could be hardwired to the RCU or plugged into the key jack.  (Photo by Jerry Proc) 

RECEIVER SWITCHING UNIT (RSU)

1980s_remote_control_rsu.jpg
RSU/SB 5055. A pair of Receiving Switching Units is picture here. This switching arrangement provides flexibility in the useage of LF/MF/HF receivers and provides a method of muting the receivers. Up to 6 receivers can be wired to the input of the RSU. Each receiver can then be switched to five different outputs. (Image courtesy Canadian Navy) 

SWITCH ASSEMBLY CONVERTER

1980s_remote_control_sw_assy_conv.jpg
SAC. Used in conjunction with a two channel frequency shift converter to enable any two audio inputs from four receivers to be selected as inputs to the converter. No AN designator is assigned to this device.  (Image courtesy Canadian Navy )

SRA 504 AMPLIFIER and PATCH PANEL

1980s_remote_control_sra504_ps_amp.jpg
Top: AM 5224/SRA-504 Amplifier Power Supply (APS). These audio amplifiers provide sufficient amplification for the maximum number of Control Radio Sets (CRS) be used in the system.

Bottom: SB 5086/SRA 504 Audio Patch Panel. Provides interconnection between the receiver /transmitters and the teletype terminal equipment or the remote control system. (Image courtesy Canadian Navy) 

SRA-504 CONTROL INDICATOR

1980s_remote_control_c5205_sra504_control_indicator.jpg
C5205/SRA-504 Control Indicator. Provides a means of selecting up to 10 of the 20 circuits allocated at the SB5086 switchboard patching unit for use at the CRS and up to 5 of the 20 circuits for use at the monitor positions.  (Image courtesy Canadian Navy) 

OJ 5002 REMOTE OPERATE SYSTEM CONSOLE

1980s_remote_control_oj5002_remote_system_console.jpg
OJ 5002/SRA Remote Operate System Console. See SRA-504 system description for details. (Image courtesy Canadian Navy) 

C5207/SRA-504 CONTROL RADIO SET

1980s_remote_control_c5207_control_radio_set.jpg
C5207/SRA-504 Control Radio Set. Provides for the selection of any 1 of 10 channels available at the CRS and a ready/busy indication for the selected channel. (Image courtesy Canadian Navy) 

MX 5131/SRA-504 ADAPTER CONTROL TO INTERCOM

1980s_remote_control_mx5131_control.jpg
MX 5131/SRA-504 Adapter Control.  This adapter control intercom accepts the outputs of two CRS and the ships intercom system and combines them into a binaural (2 ear) headset. (Image courtesy Canadian Navy) 

Contributors and Credits:

1) RCN's AOR/TRBL/ISL/265/IRE/MACK Class Equipment Handout. September 1985.
2) Tom Brent <tgb(at)telus.net>


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Aug 05/08