This radio is in Riders USR&T page 1-16 but there are no values listed nor are there any part numbers on the components. A mouse chewed through T3 which is a single wdg. choke with a center tap which supplies 160 VDC to the plates of 171A push-pull output tubes. I have no audio output from the speaker.Using a signal tracer, I have good tunable signals at the grids of the 171A's. The speaker is self powered with a measured 100ma through the field wdg. and works when fed with a IG-102 signal generator audio source. I need guidance as to what to use to replace this T3 choke and whare to find it. Thanks-Scott

Most any audio output transformer with a centertapped primary should work. Ignore the secondary.

:Most any audio output transformer with a centertapped primary should work. Ignore the secondary.
:Thanks for the suggestion. I now have power supply trouble.Plate voltage jumped to 212V. I think a resistor opened up and my attempt to feed 160VDC by an external supply has resulted in no grid bias on the 171A output tubes. I will next dig into the power supply.
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