Antique radios, Old Time Radios
Xtraudion_4V_GP
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Country:
Great Britain (UK)
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| Identical to |
Xtraudion_4V_GP
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| Similar
Tubes |
Normally replaceable-slightly different:
Xtraudion_4V_HF
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| First Source
(s) |
1923 : British Radio Valves - The Vintage Years: 1904-1925 4,41
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 4 Volts / If 0.4 Ampere / Direct / Battery = |
| Description |
Bright emitter. By 1924 supplanted by dull emitter Dextraudions.
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Xtraudion_4V_GP: Fin Stewart
Fin Stewart
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Just Qvigstad
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