Antique radios, Old Time Radios
VPTA
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Country:
Great Britain (UK)
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Brand:
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Ferranti, GB |
| Tube type: |
Vacuum Pentode Audio Frequency |
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| Identical to |
VPTA
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| First Source
(s) |
22.Nov.1935 : Wireless World (The), London (WW, 79)
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| Base |
British-7-Pin, old (M7A)
Top contact with a cap.
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 13 Volts / If 0.2 Ampere / Indirect |
| Description |
It is probable that this is a mistake in the literature for VPT4.
Listed in all sources as VPTA, including the Universal vademecum
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| Information source |
History of the British Radio Valve to 1940 p. 146 & 195
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49
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Just Qvigstad
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VPTA: My schematic collection.
Pier Antonio Aluffi
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