Radios antiguas y Radios de Colección
SP18/B
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País:
Gran Bretaña (GB)
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Marca:
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| Tipo: |
Triode, vacuum Universal |
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Ca. 1925 up to 1945 rare. |
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| Idéntica a |
SP18/B
= AMR.2/9
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| Válvulas similares |
Substituya normalmente -diferencia peq.:
SP18
; SP18/G
Other characteristic (electr. data):
SP18/R
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
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| Usada en |
Radio/TV-reception etc. |
| Filamento |
Vf 1.8 Volt / If 0.3 Ampere / Direct / Battery = |
| Descripción |
Shortpath is a Cosmos brand, see Keith R. Thrower, British Radio Valves, page 48. Probably an anglicised version of the WD11 from the USA.
According to Tyne (pp.373, 374) there are three variants:
- SP18/B
- SP18/G
- SP18/R
in the Benjamin Catalog all SP18 are tubular, although Tyne shows an SP18/G having a globe shape. Error?
The SP18 without dot or suffix (B, G, R) is definitely existing (see photo)
Story of Cosmos valves see here
Texto en otros idiomas
puede diferir
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| Literatura |
70 Years of Radiotubes and V. p.196
History of the British Radio Valve to 1940 p.161
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SP18/B: Fin Stewart
Fin Stewart
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Just Qvigstad
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