Antique radios, Old Time Radios
GT4A
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Country:
Great Britain (UK)
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| Identical to |
GT4A
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| Base |
Europe 5-Pin , B5 (Eu O, F, O5A) 1928
Top contact with a cap.
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| Was used by |
Industrial |
| Filament |
Vf 4 Volts / If 1.2 Ampere / Indirect / Specified voltage AC/DC |
| Description |
Va<300 peak. Ia< 300mA pk.
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| Information source |
Babani, International Radio Tube Encyclopaedia p. 305
British Radio Valves - The Classic Years: 1926-1946 Supplement, p. 155
History of the British Radio Valve to 1940
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Just Qvigstad
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