Quote:
Originally Posted by jr_tech
The uv-199 has a 3 volt filament, So a couple of D sized flashlight batteries in series should work fine. I have never seen a rectangular 3 volt battery with clip connections like the chart appears to show.
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If there is a rheostat on the front panel (like a volume control) it is likely that the radio used a 4-1/2 volt battery for the filament and adjusted it for correct filament voltage. This would allow adjustment as the battery wore out, as well as serving as a volume control, by adjusting the filament voltage below 3 volts if the station was too loud. Retangular 4-1/2 volt batteries were readily available at the time.
Found this ad for a uv199... very expensive at the time! The magazine provides an interisting glimpse into radio in the era when the radio was new.
http://www.vacuumtubeera.net/RadioBr...03-1923-09.pdf
jr