Antique radios, Old Time Radios
220PT
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Country:
Great Britain (UK)
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| Identical to |
220PT
= PM22
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| Base |
Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Eoo)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 2 Volts / If 0.2 Ampere / Direct / Battery = |
| Description |
Wurde auch mit Sockel 4 Stift (B4, A, 4A) 1914 France geliefert.
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| Information source |
History of the British Radio Valve to 1940 p. 145 & 186
Babani, International Radio Tube Encyclopaedia p. 30 & 31
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49
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220PT: Telefunken Werkstattbuch
Wolfgang Bauer
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Just Qvigstad
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220PT: COSSOR VALVE MANUAL 1935-6
Jose Casas-Avalos
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):6
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