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Description
Serial No. 2258. Described in Radio's Master Encyclopedia of 1935-1936 as a "medium size triode suitable for broadcast and other transmitters, as well as high power diathermy machines. This tube has a glass side-arm and is suitable for operation at frequencies as high as 60 megacycles. Filament 7.5 volts, 15 amperes. Plate dissipation 300 watts. Amplification constant 25. Plate impedance 3800 ohms."
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