Antique radios, Old Time Radios
PT5
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Country:
Great Britain (UK)
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| Identical to |
PT5
= CV3652
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| Base |
Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fr)
Top contact with a cap.
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| Was used by |
Transmittertube (Radio) |
| Filament |
Vf 4 Volts / If 1.7 Ampere / Direct |
| Description |
This tube has a carbonised anode and output of 4o watts. It iis fitted with a top cap to reduce stray impedance and so improve the high frequency performance. The filament is oxide coated.
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| Information source |
The Saga of Marconi Osram Valve p. 172
Babani, International Radio Tube Encyclopaedia p. 240 & 241
History of GEC and the Marconi Osram Valve
Taschenbuch zum Röhren-Codex 1948/49
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