Summary

The 6J7 was amongst the first group of metal valves to be released at the end of 1935. It is a sharp cut-off pentode. Rarely used as an RF amplifier because of its sharp cut-off characteristic, it was very popular for use as a resistance coupled audio amplifier.
6.3 V indirectly heated cathode.
Manufacturer: Tung Sol Lamp Works Inc., Newark, NJ, USA.

Physical Description

Sectioned metal bulb with octal base and top cap.

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