March 17, 2016 at 7:19 pm
#31962
CVRS Member
Hi Peter,
when I restored a Westinghouse RC for the International Restoration Contest in 2015, I tried various plate voltages for both the detector and the audio and ended-up with all three tubes working on 27 volts. That was well enough to drive the speaker and I had less noise in the set. Normal voltages would have been 22.5V for the detector and 45V on the two audio tubes. Even 18V give adequate results but with less volume. The whole story is here :
https://sqcra.org/wp-content/uploads/2015/04/2015_CRI_SQCRA_westinghouse-RC.pdf