Antique radios, Old Time Radios
PT25
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Country:
Great Britain (UK)
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| Identical to |
PT25
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| Similar
Tubes |
Normally replaceable-slightly different:
PT25H
Other class quality (otherwise equal):
DET7
Multiple differences or of other kind:
DET8
|
| First Source
(s) |
Aug.1932 : Wireless World (The), London (WW, 79) p168
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Successor Tubes
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PT25H
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| Base |
Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Foo)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 4 Volts / If 2 Ampere / Direct / Specified voltage AC/DC |
| Description |
Pa <25W. Audio output pentode.
|
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
Universal Vade-Mecum, Electron Valves and Semiconductor Devices p. 410
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PT25: Telefunken Werkstattbuch
Wolfgang Bauer
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Just Qvigstad
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