Re: Supersonic Heterodyne radio 1920's.
Thanks for that some interesting reading there , I was wondering about the coil pack , would this be the aerial coil and osc coil combined ,there are two separate coils not connected internally.
I will double check the IF freq there is no reference to the freq on the cans.
It's possible that it once had one of those mixer valves as all the bases are four pin except the output .comments please. Mick.
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