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I acquired this receiver in 1968 and built a power supply on the back (in picture). It was used for RTTY reception on my old Model 19 Teletype set. It was later stored for almost 30 years until it was dug out and put back into use as a short wave receiver.
Fairly sensitive but very broad, which doesn't lend it's self for amateur band operation although it does receive SSB signals very nicely.
The original use of this receiver was WW2 Navy Aircraft use.