Wireless Set No. C52


This was a mobile transmitter/receiver developed in 1943 for general purpose use from Brigade to Division communication.  The C-52, developed  from the No. 9 Set, proved to be very popular in all quarters although it was noted that while performance on medium power was good, there was a tendency to overheat on high power. This set was particularly valuable in airborne roles and for command vehicle use. The U.K. alone spent over 14 million dollars purchasing 352 sets

SPECIFICATIONS

Modes :R/T, MCW and CW
Frequency Range: 1.75-16 MHz
Receiver type: 108-953 ZA/C00072
Transmitter type: ?
Power Output:  Up to 100 watts. Uses a 813 tube and grid modulation.
Frequency Control: Master oscillator
Vintage: 1944
Comment: Canadian design which replaced the No. 9 Set. In the UK, the No 11 set was manufactured by E.K. Cole

ws52.jpg
The complete WS-52 set less accessories. (L-R) Receiver, common power supply and transmitter. The dark, mail-box shape atop the WS-52 was a post war modification which contained a new dynamotor because the original 1200v dynamotors were not reliable due inadequate HV insulation. It was cheaper to install a piggy back unit rather to retrofit a new one. At the top right is an antenna tuner. (Photo courtesy Wireless for the Warrior )

RECEIVER PHOTOS

This is a remote receiver. The blank hole above the band switch is the clock holder. 
c52_08.jpg
With front panel cover removed.
c52_09.jpg
Receiver - chassis bottom view.
c52_06.jpg
Front of ZE-12 receiver power supply  with cover on. 
c52_11.jpg
ZE-12 receiver power supply - cover off. This was used only with the remote receiver. Except for a slight difference in component layout, this supply looks identical to the one used with the CSR-5 receiver. It is capable of operating from 110/220 VAC or 12 VDC power sources.
All photos in this table by Palix Olivier, France

 

TRANSMITTER PHOTOS

ws52_tx_front1.jpg
Above and below: Two views of the front panel.
ws52_tx_ front2.jpg
ws52_tx_top.jpg
Top view
ws52_tx_ side3.jpg
Right side
ws52_tx_back3a.jpg
Right and back views.
ws52_tx_back2a.jpg
Back and left side views.
ws52_tx_ back4.jpg
Back side view. Note the Marconi "snatch plugs" at the top right side of the chassis.
ws52_tx_ back5.jpg
Left side.
All photos in this table by Denis Chouinard VE2DSH

TRANSMITTER POWER SUPPLY PHOTOS

ws52_ps_front.jpg
Front view of transmitter power supply. The power supply used in units built in the UK was similar . 
ws52_ps_top.jpg
Top view.
ws52_ps_side2.jpg
Right side view.
ws52_ps_side3.jpg
Left side view.
ws52_ps_back1.jpg
Back view.
ws52_ps_back2.jpg
Back and left side views.
All photos in this table by Denis Chouinard VE2DSH

 
52set_rcvr_nameplate.jpg
Receiver nameplate data. (Image via E-bay) 
52set_ze12_nameplate.jpg
ZE12 power supply nameplate data. (Image via E-bay) 

 

Click to enlarge

c52_complete_station_s.jpg This photo illustrates a complete WS-52 station complete with all accessories. (Provided by Palix Olivier, France)
c52_schematic_s.jpg Schematic diagram. (Provided by Palix Olivier, France)
ws52_ze12_ps_schematic_s.jpg ZE-12 power supply schematic (Provided by Palix Olivier, France)
c52_10s.jpg  Super size photo of the remote receiver. (Photo by Palix Olivier, France)

 
c52_clock.jpg
Clock detail. Photo by Palix Olivier, France)

 
c52_13_spares.jpg
Receiver spares kit. It consists of ARP3 (or 9D2) tubes, 12Y4 and 0Z4 tubes; meter; speaker and a special alignment tool for RF and IF transformers.
c52_manual_page1.jpg
Front cover of manual.
All photos in this table by Palix Olivier, France


Contributors and Credits:

1) Wireless for the Warrior   http://home.wxs.nl/~meuls003/wireless/wireless.html
2) Palix Olivier <olivier.palix(at)free.fr>
3) Denis Chouinard <denischouinard(at)enter-net.com>
4) André Guibert <aguibert(at)sympatico.ca>
5) Denis Chouinard VE2DSH<denischouinard(at)enter-net.com>
6) Report No. 73 Historical Section  (G.S.) Canadian Army Headquarters Feb 11, 1955
 

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Dec 28/16