Summary

Triode, Transmitting. Made by Marconi Wireless Telegraph Co. Ltd. In England. For short wave radio transmission, medium and high power; air cooled.
Filament single ‘V’ shape with tension springs. 17 volts at 11.5 amps; anode 5000 volts watts maximum; mutual conductance 4450; amplification factor 40.

Physical Description

Cylindrical glass bulb with neck at each end, supported vertically and mounted on a stand with display label. Anode connection is broken at bottom. The external leads are fitted with wood and glass beads.

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