The 2B7 and 6B7 were the first double diode pentodes to be made, combining the functions of IF amplifier, signal detector and AVC rectifier in the one valve. The pentode section has a semi-remote cut-off characteristic. 2.5 V indirectly heated cathode. Manufacturer: Hygrade-Sylvania Corporation, PA, USA.

Physical Description

Shouldered bulb with small seven pin American style base with top cap.

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