Radio Antica e Radio d'epoca
F1_Louden
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Stato:
Gran Bretagna (Regno Unito)
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| Identico a |
F1_Louden
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| Prime
informazioni |
1924 : British Radio Valves - The Vintage Years: 1904-1925 p.32 & 185
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| Zoccolo |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
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| Utilizzata per |
Radio/TV-reception etc. |
| Filamento |
Vf 5 Volt / If 0.4 Ampere / Direct / Battery = |
| Descrizione |
Tyne calls it FE1. Either Tyne or Thrower may be in error. Fellows/Louden advertisements of the 1926-27 period refers to them as F1. The FE series were introduced as dull emitter equivalents.
Louden valves were marketed by Fellows Magneto Co. Ltd. from 1924 to 1927.
The F1, F2, F3, Bright emitters were replaced by the near equivalent FEx1, FEx2 and FEx3 series in 1926-27.
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| Bibliografia |
Saga of the Vacuum Tube, Tyne P. 392
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F1_Louden: Fin Stewart
Fin Stewart
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Just Qvigstad
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F1_Louden: Banneitz, TB der drahtl. Teleph. 1927
Anonimo 15 Collezionista
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[rmxtube-en]
| Conformità dei dati |
Ulteriori informazioni |
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