Radios antiguas y Radios de Colección
R4_Osram
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País:
Gran Bretaña (GB)
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| Idéntica a |
R4_Osram
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| Válvulas similares |
Substituya normalmente -diferencia peq.:
R4_BTH
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Válvulas Sucesoras
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R4A
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| Base |
Edison (candelabra) 12 mm
Wires only.
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| Usada en |
Militaire et/ou Services Publics |
| Filamento |
Vf 3.3 Volt / If 1 Ampere / Direct / Battery = |
| Descripción |
Developed from the R Type. The R4 was a hard vacuum tube. The Naval version is the NR4. First made by Osram GEC June 1917. This tube led to the development of the R4A, R4B and R4C types
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Dimensiones
(Alt,Ancho,Prof.)
incl.pins/tip |
50 x 86 x mm / 1.97 x 3.39 x inch |
| Peso |
32 g / 1.13 oz |
| Literatura |
British Radio Valves - The Vintage Years: 1904-1925 Pages 26, 27, 40 & 86
Saga of the Vacuum Tube, Tyne Pages 220 & 221
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Colección personal de
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[rmxtube-en]
| Cumplimiento de datos |
Más información |
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