Radio Valves

Cleartron CT-25

CT25 CT25

A dull-emitter low impedance output triode. Filament 0.25A at 5V. These were probably an American design, made or assembled at the Birmingham factory. This one is engraved 'Selfridges', the London store where it was sold in 1925.

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This page last modified by AJC on Sunday, 23-May-2010