43 SET 
The  43 set is not mentioned in any of the Canadian Army 1944 documentation which appears in this web page. Because this is a very rare set, it has found a home in this web document.

The 43 set is called "Transmitters Canadian No. 43 Mk II. The "Temporary working instructions" are H.Q.S. 9070-12-11 (DECD) dated 15 June 1943. The final manual was produced in 1945.

The companion receiver is the Reception Set Canadian VRL (Vancouver Radio Labs Ltd.) The entire set is usually referred to as the  W.S. Canadian No. 43 Mk II.. Philips produced the transmitter portion.

It was designed to fit in a 30 HWT truck along with a generator. The set  has an output of 500 watts on CW and less on MCW and phone,  The plate voltage of final stage of the 43 set was 2100V and the whole set weighs about 500 lbs.

Front view of 43 set. This example appears to have never been used.
43 set rear view. It  has two oscillators and two out put sections using a pair of 813s.  It is believed that one oscillator and output tube is for a higher frequency range than the other. The original RF connectors were feed-through insulators on the top just like the AT3. These were removed and replaced with type N connectors. 
43 set RF amplifier deck. The transmitter also contains a dummy load
All photos in this table by Jim Fleming VE3PBJ

Credits and References:

1) Jim Fleming <jim.c.fleming(at)gmail.com>

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Oct 27/17