Antique radios, Old Time Radios
HPT4V
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Country:
Great Britain (UK)
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| Identical to |
HPT4V
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| Base |
Europe 5-Pin , B5 (Eu O, F, O5A) 1928
Top contact with a cap.
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| Filament |
Vf 4 Volts / If 1.1 Ampere / Indirect |
| Information source |
Universal Vade-Mecum, Electron Valves and Semiconductor Devices group 155
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Just Qvigstad
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