Antique radios, Old Time Radios
HL425
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Country:
Great Britain (UK)
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| Identical to |
HL425
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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 0.25 Ampere / Direct |
| Information source |
History of the British Radio Valve to 1940 p. 144 & 157
British Radio Valves - The Classic Years: 1926-1946 Supplement, p. 15
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HL425: Fin Stewart
Fin Stewart
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Just Qvigstad
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