I've got an old "Automatic Radio model UAF-6270" that was in my TR3 when I got it in 2012. Finally got around to looking at it. I tested it and it is currently set to positive ground and works. I would like to change it to negative ground, the same as my TR3. As can be seen on the pictures below it can be set to either positive or negative ground. However it is unclear to me how to make that change. I don't want to mess up the radio trying to change the ground polarity. I tried turning the "wheel" by the ground indicators on the top cover but it does not seem to want to move. Can anyone advise me of the correct way to change the ground polarity on this radio?
I searched the various Vintage radio web sites but none of them addressed how to change the polarity on this specific radio, and I'm not at all knowledgeable on radios. Thanks!
Bob
I searched the various Vintage radio web sites but none of them addressed how to change the polarity on this specific radio, and I'm not at all knowledgeable on radios. Thanks!
Bob