Antique radios, Old Time Radios
420(SP)
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Country:
Great Britain (UK)
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| Identical to |
420(SP)
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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 0.2 Ampere / Direct |
| Information source |
British Radio Valves - The Classic Years: 1926-1946 Supplement, p. 32
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420(SP): Fin Stewart
Fin Stewart
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Just Qvigstad
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