Antique radios, Old Time Radios
F_Osram
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Country:
Great Britain (UK)
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| Identical to |
F_Osram
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
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| Was used by |
Military and/or Government |
| Filament |
Direct / Battery = |
| Description |
Tube designed for the British Royal Air Force. It was similar to an R design but of rugged construction with glass tube supports for the anode and grid. The extra glass supports were for the filament. Data is very scarce on this tube and a date of manufacture is not known.
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| Information source |
British Radio Valves - The Vintage Years: 1904-1925 Pages 78 & 79
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Just Qvigstad
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| Data Compliance |
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