Marconi thermionic diode valve

Made:: 1915 in England

Marconi thermionic diode valve
Science Museum Group
© The Board of Trustees of the Science Musuem

Marconi Wireless Telegraph thermionic diode valve

MR7

Details

Category:: Radio Communication

Object Number:: Y7000.3012

Materials:: glass, plastic (unidentified) and metal (unknown)

Measurements:: overall: 175 mm 86 mm,

type:: thermionic valve and diode

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Marconi thermionic diode valve

Details

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