Antique radios, Old Time Radios
P425_BSA
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Country:
Great Britain (UK)
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| Identical to |
P425_BSA
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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 0.26 Ampere / Direct / Battery = |
| Description |
Filament rated 3.5 to 4.4V at 0.25 to 0.28A.
Va <130.
Ra 5 to 7k ohms Amplification factor 6.4 to 6.8.
An STC tube first marketed by BSA-Standard in 1926
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| Tube prices |
1 Tube prices (visible for members
only)
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| Information source |
British Radio Valves - The Classic Years: 1926-1946 Supplement, p. 13
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P425_BSA: Fin Stewart
Fin Stewart
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Just Qvigstad
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Collection of
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