Antique radios, Old Time Radios
SP41/U
Country:
Great Britain (UK)
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Identical to |
SP41/U
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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 1 Ampere / Direct |
Information source |
History of the British Radio Valve to 1940 p.168
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Just Qvigstad
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