Radios antiguas y Radios de Colección
R4_BTH
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País:
Gran Bretaña (GB)
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| Idéntica a |
R4_BTH
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| Válvulas similares |
Substituya normalmente -diferencia peq.:
R4_Osram
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Válvulas Sucesoras
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R4A
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| Base |
Edison (candelabra) 12 mm
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| Usada en |
Militaire et/ou Services Publics |
| Filamento |
Vf 3.5 Volt / If 1.1 Ampere / Direct / Battery = |
| Descripción |
Improved R type, able to oscillate. Satisfied naval service requirements - naval version NR4. Tube has an E12 for the filament, with wire leads from the top of the tube for plate and grid connections. It had a spherical bulb and was first made early in 1917
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| Literatura |
Saga of the Vacuum Tube, Tyne page 219, 220
British Radio Valves - The Vintage Years: 1904-1925 Pages 26, 27, 40 & 86
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Colección personal de
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[rmxtube-en]
| Cumplimiento de datos |
Más información |
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