Antique radios, Old Time Radios
HP215_B4
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Country:
Great Britain (UK)
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| Identical to |
HP215_B4
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| First Source
(s) |
1934 : History of the British Radio Valve to 1940 p. 193
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
Top contact with a cap.
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 2 Volts / If 0.15 Ampere / Direct / Specified voltage AC/DC |
| Description |
This tube is listed in Babani as having a B5 base
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| Information source |
Babani, International Radio Tube Encyclopaedia P. 110 & 111
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Just Qvigstad
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