Antique radios, Old Time Radios
B404
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Country:
Netherlands
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| Identical to |
B404
= K2
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| First year |
1925
Tube leaflet collection E.Erb Analysis by original leaflets
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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 0.6 Ampere / Direct |
| Information source |
L'ABCDaire des lampes de TSF des jeunes années p. 11
Universal Vade-Mecum, Electron Valves and Semiconductor Devices Section 111, p. 145
Taschenbuch zum Röhren-Codex 1948/49
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Just Qvigstad
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| Data Compliance |
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