Antique radios, Old Time Radios
SG220
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Country:
Great Britain (UK)
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| Identical to |
SG220
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| Similar
Tubes |
Different connections:
SG220SW
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| First Source
(s) |
22.Nov.1935 : Wireless World (The), London (WW, 79)
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Er)
Top contact with a cap.
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 2 Volts / If 0.18 Ampere / Direct / Battery = |
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
History of the British Radio Valve to 1940 p. 184
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Just Qvigstad
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