Antique radios, Old Time Radios
230PT
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Country:
Great Britain (UK)
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| Identical to |
230PT
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| Similar
Tubes |
Normally replaceable-slightly different:
C243
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| First Source
(s) |
Dec.1929 : Wireless World (The), London (WW, 79) Company advertisement
1929 : History of the British Radio Valve to 1940 p.185
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eoo)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 2 Volts / If 0.3 Ampere / Direct / Battery = |
| Information source |
Röhren-Vademecum; P.H. Brans; Antwerpen p. 125
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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230PT: Telefunken Werkstattbuch
Wolfgang Bauer
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Just Qvigstad
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230PT: own collection
Peter den Boer
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Collection of
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