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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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 4 Volts / If 1 Ampere / Direct |
| Information source |
Röhren-Vademecum; P.H. Brans; Antwerpen p. 86
- - Manufacturers Literature
Taschenbuch zum Röhren-Codex 1948/49
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| Tube Tester Data |
Avo CT160 |
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U4F: own collection
Peter den Boer † 2025
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Just Qvigstad
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U4F: own collection
Peter den Boer † 2025
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