Twin triode designed for use in VHF transmitters. It was rated for use up to 250MHz.
It has 6.3 V indirectly heated cathodes.
It is equivalent to the American types 2C34 and RK34 and to the English types 4074A (STC) and DET19 (Osram)
Manufacturer: unknown but based on the picture on the British National Valve Museum Website, it is probably Marconi Osram.

Physical Description

Shouldered bulb on large 7 pin American style base(cermaic shell) with 2 top caps

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