Antique radios, Old Time Radios
U4F
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Country:
Denmark
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| Identical to |
U4F
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| Similar
Tubes |
Normally replaceable-slightly different:
M7
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
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| Filament |
Vf 4 Volts / If 1 Ampere / Direct |
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
- - Manufacturers Literature
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U4F: own collection
Peter den Boer
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Just Qvigstad
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U4F: own collection
Peter den Boer
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