Antique radios, Old Time Radios
CV1690
| Base |
Europe 5-Pin , B5 (Eu O, F, O5A) 1928
Top contact with a cap.
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| Was used by |
Military and/or Government |
| Filament |
Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AND current AC/DC |
| Description |
4.25mA/V Gm, 250V max anode.
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| Information source |
Universal Vade-Mecum, Electron Valves and Semiconductor Devices p. 78
Babani, International Radio Tube Encyclopaedia Pages 78 & 79
-- Original-techn. papers.
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CV1690: Fin Stewart
Fin Stewart
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Just Qvigstad
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