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Have you checked the current consumption in your output stage? You might be able to adjust the bias to lessen it, or it might be too high. I have seen a radio that seemed to work fine run a great amount of current through a 42 tube. The tube did not red-plate but the transformer got hot.
I got the power co to turn the voltage down at the shop/museum to 119V from 127. It is the only building on that transformer.
As I recall it is 13 turns and 13 turns and 13 turns - 3 taps (5 wires) on that band 2 osc coil.
"I just might turn into smoke, but I feel fine"
http://www.russoldradios.com/
(This post was last modified: 07-18-2014, 10:02 AM by Phlogiston.)
Messages In This Thread
RE: Philco 37-690 - by Phlogiston - 07-18-2014, 10:01 AM
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