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Old February 12th 09, 11:33 PM posted to rec.radio.shortwave
Michael[_8_] Michael[_8_] is offline
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First recorded activity by RadioBanter: Feb 2009
Posts: 15
Default 1920's radios ???

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.

I'm still not sure about the "neutralizing" procedure. Covering up a
filament pin and so on...

Anyone here actually ever neutralize a neutrodyne before ???

Thanx in advance...

Michael