[Milsurplus] RPA-3 Receiver?

[George Babits]

I have a couple of Canadian RPA-3 receivers, made by Stewart Warner of 
Canada.  They tune 1.5 to 30 MCs in 4 bands.  Large unit with the receiver 
on the bottom and power supply with crystal calibrator on top.  Dated 1944. 
Wondering if anyone might have any information, or better, a schematic or 
manual.

Thanks,
George
W7HDL