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Old 06-21-2006, 08:39 AM
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Adam Adam is offline
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Location: Phoenix, AZ
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It's good to hear you got it going. This was actually a very informative thread for me, I never understood exactly what was the source of the low B+ in these sets until I read up above.

"As you can see from the Motorola diagram V4,6,&10 are the tubes that feed the low B+ circuit. With 250v on the plate the cathode is use in a voltage divider to derive 125v for V1 rf amp, V12 audio output, and V10A half of the clipper."

With all the different chassis variations the only one I've ever come across is the J, they must have really stepped up production of these towards the end.
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