Thread: Lang radio
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Old 10-08-2017, 01:44 AM
EdKozk2 EdKozk2 is offline
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Join Date: Mar 2014
Location: Elkhorn, WI
Posts: 542
Hi Grimer,
Just a guess but, your radio looks to be laid out like a reflex circuit. The amount of audio inter stage transformers and placement look just like a reflex radio. If it is one, that would explain all the 01-A tubes also. A reflex radio has the tubes do double duty. They can carry the audio signal and RF at the same time. David Grimes built radios in the 1920's using the inverse duplex reflex circuit. I happen to have a Bristol Model D reflex radio I repaired a few years ago. Grimes had a factory near NYC. The radio you have should work with a B+ voltage of 45 to 90 on the plates except the detector. The detector may need only +22 volts. Filaments need 4 to 5 volts DC. The radio may not use a C battery. Some of these radio's used a grid resistor of less than 1 meg ohm for the detector to avoid overload and distortion. Like the other poster said, better pictures would help. I'll try and do some checking on the Lang name too. Cool radio anyhow.
Ed
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