On Thu, 12 Feb 2009 23:33:05 GMT, "Michael"
wrote:

Hey all...

Been a long while since I posted here...

Anyone here have any experience with radios from the 1920's. I'm
restoring my first pre war model.

I've got a three dial five tuber neutrodyne casket radio. They use the 201A
tubes. 90 volts for the tube plates and normally powered by "b" cells and
on the "a" cell line, they take the 6.5 volts for the filaments, and 45
volts on the detector. I'm gonna juice it up with an Arbe III once I
locate a schematic and figure out what goes where.

You might post your question on rec.antiques.radio+phono....lots of
folks there with the knowledge you're looking for.