The main radio office aboard  HMCS ALGONQUIN (R17) looking aft as it appeared on July 31, 1945. In the centre of the photo is a Canadian Marconi CSR5A receiver tuned to around 10 mc/s. It is believed that this receiver may have been fitted during ALGONQUIN'S Canadian refit of February 1945.  (Public Archives Canada Photo  HS-1533-1 submitted by Spud Roscoe)

Iroquois (G89) radio room 1943. The 'Sparker' is receiving something on the National RAS  receiver. Download image to enlarge. (Provided by Lewis Bodkin)

HMCS HAIDA's Wireless Office #1 in 1944. Starboard view. The most predominant piece of equipment is the Admiralty B28 receiver. (Photo by  David Faribarn) 

HMCS HAIDA's Wireless Office #1 in 1944. Aft view. At the right side is the Westinghouse TBL transmitter.  Note how the vent trunking in the upper right is used as a place to hang up the headphones. (Photo by  David Faribarn) 
Radio room of HMCS PRINCE RUPERT (K324), a River Class frigate. This was  taken on October 22nd, 1943, the day after she arrived in Halifax from her builders Yarrows Ltd., Esquimalt B.C.

Left side of photo: PV500H transmitter
Right side of photo from left to right: Two Marconi SMR-3 receivers and a FR12 and just a sliver of an MSL5 can be seen at the right. (Public Archives Canada Photo HS-0262-1 submitted by Spud Roscoe)

A portion of the radio office in HMCS SKEENA (H03). At the left is is the British Admiralty 4TA transmitter with the coil drawers above and behind. At the right is the National HRO-SPC receiver. (From the collection of Allan Riley). 
Tom Brent, offers some background on the National HRO-SPC reeiver:
Many years ago, at one of my radio displays, I remember I had an old timer state that when Skeena was transferred from Esquimalt to the East coast in 1937,  "we stopped in San Francisco and bought an HRO" (his words).

The receiver itself in the photo must have been made in the late 1930s since that is when the National ID tag was moved to the upper right-hand corner of the panel. The radio receiver itself is obviously what we now refer to as the HRO Senior model. National literature from this period simply calls it the HRO and refers to a simpler version that was available as the HRO Junior (the most obvious difference in the Junior is the deletion of the 'S' meter and crystal filter). The receiver used in the RAS/RBJ/RAW is similar to the Junior.

HRO-SPC was first advertised in December 1936. The "SPC" refers to a power supply, coil compartment (with room for 5 coils) and an 8" loudspeaker, all in one unit. The RAS/RBJ/RAW receivers are very different in that they had each of these 3 components on separate panels and the coil compartment has room for 8 units.

The HRO's designed for relay rack mounting had a 3/16 inch aluminum panel that was available in black or gray. To quote from the catalogue section at the back of my 1939 HRO manual: "HRO SPC consists of a panel mounted HRO receiver, an SPC unit and an MRR relay rack".

Prices (1939):

HRO receiver (rack mounting type) - $320
SPC Combination - $90
MRR table relay rack - $22.50
HRO Bandspread coils (covering 2.7 - 30 MHz) 4 x $20 ea. =$80

Coils for the 50 - 400 KHz and 500 - 2050 KHz bands vary in price but, at the very least, the receiver in the Skeena photo would have cost $512.50 if it only came with the standard 4 coil HRO complement covering 2.7 - 30 MHz".

Taken in 1950, the equipment in this radio room aboard an RCMP vessel was representative of that used in WWII. Some of the diesel powered, Bangor class minesweepers became RCMP patrol boats after WWII and retained their naval radios. 

From left to right: Ben Colp, Bob Bell and Irwin Beatty. Behind the operators from left to right is: part of PV500 series transmitter, PV500H transmitter,. MDF5 direction finding set and an FR12, all Canadian Marconi built equipment. Note that the FR12 is using bare copper transmission line Normally the RF feedthrough insulator is to the left of the meter. Here it is to the right. (Photo courtesy of Staff Sergeant Ben Colp, R.C.M.P. Marine Division submitted by Spud Roscoe)

A portion of the radio room aboard RCMP IRVINE. From left to right: Canadian Marconi FR12, CSR5 and MSL5. The CSR5 was last tuning a station around 475 kc/s.  (Photo courtesy of Staff Sergeant Ben Colp, R.C.M.P. Marine Division submitted by Spud Roscoe)

Radio 1 - HMCS SWANSEA, November 1960.  Radio Two is the room behind it with the CM11. The photo was taken taken in the doorway to Radio One. Left to Right: Don Ryan ABRM, Malcolm MacPhail OSRM, Ron Bell ABSG and Dave Carlin OSSG. (Photo by Spud Roscoe)

Bob Calnen (left) and brother Bill Calnen (right) both long serving Radio Officers in the Naval Auxiliary Fleet. The guy taking on bunkers from the 807 in the middle is a deck hand or seaman and unidentified. This photo was taken in 1969 on the deep sea tug CFAV ST. CHARLES,  call sign CZFT. Shown here is the CM11 , CSR5A and an AN/URT-502 (TED-3) transmitter. It is more than likely that there is a AN/URR-35 below the the URT-502. (Photo by Paul du Mesnil)
 Radioman J. F. "John" Leightizer in Radio 1 aboard HMCS BUCKINGHAM. (Photo via J. F.  Leightizer)
Radio operator Ron Mark aboard Athabaskan 219 in 1952. The receiver with the grey panel is the RCA TE236 which covered 15 to 600 KHz. It was used to guard the international distress frequency of 500 KHz. (From the collection of Ron Mark) 

Photo Set  - HMCS IROQUOIS RADIO ROOM 1 -  1962

Contributors and Credits:

1) by Allan Riley
2) Tm Brent <tgb(at)>
3) Ronald Mark      rondmark(at)
4) Lewis Bodkin   [<5bodkin555(at)>

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Feb 17/19