Antique radios, Old Time Radios
PP431
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Country:
Hungary
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| Identical to |
PP431
= L427D
= RES374
= C443N
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| Similar
Tubes |
Normally replaceable-slightly different:
D70
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| Predecessor Tubes |
PP430
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| Base |
Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Foo)
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| Filament |
Vf 4 Volts / If 0.25 Ampere |
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
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PP431: Telefunken Werkstattbuch
Wolfgang Bauer
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Just Qvigstad
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PP431: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
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Collection of
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