Radios antiguas y Radios de Colección
E993
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País:
Gran Bretaña (GB)
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| Idéntica a |
E993
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| Válvulas similares |
Multiple differences or of other kind:
W30
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| Base |
British-7-Pin, old (M7A)
Top contact with a cap.
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| Usada en |
Radio/TV-reception etc. |
| Filamento |
Vf 13 Volt / If 0.3 Ampere / Indirect / Specified voltage AND current AC/DC |
| Descripción |
Experimental "W30/catkin in glass (replacement)" Developed at the Hirst Research Centre of GEC.
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| Literatura |
The Saga of Marconi Osram Valve p340
-- Collector info (Sammler)
Babani, International Radio Tube Encyclopaedia
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
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Just Qvigstad
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| Cumplimiento de datos |
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