Re: A most unusual little radio
RV12P2000 pentode issued in 1937 for German army. Hence 12V heater.
Very, very versatile valve, was produced in east germany till 60-ties Identical valve with different base (B8G) was manufactured in USSR as 12Ж1Л and in Poland 12Z1L, also versions for differnt heater voltage 4, 6, 10 V.
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