Antique radios, Old Time Radios
Microtriode
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Country:
France
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| Identical to |
Microtriode
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| Similar
Tubes |
Normally replaceable-slightly different:
A410
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| First Source
(s) |
Aug.1930 : Philips Bulletin R1164, p. 34
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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 3.5 Volts / If 0.1 Ampere / Direct / Battery = |
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
Röhren-Vademecum; P.H. Brans; Antwerpen p. 49
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Just Qvigstad
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Microtriode: own collection
Peter den Boer
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Collection of
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