Antique radios, Old Time Radios
R81
Country:
France
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Identical to |
R81
= TB42
= H410D
= B442
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Similar
Tubes |
Normally replaceable-slightly different:
4619_WLS
; WLS581
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First Source
(s) |
1926 : Saga of the Vacuum Tube, Tyne p.403
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Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Bo)
Top contact screw type.
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Filament |
Vf 4 Volts / If 0.1 Ampere / Direct / Battery = |
Description |
Codex falsch erfasst!
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Information source |
Taschenbuch zum Röhren-Codex 1948/49
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R81: rtt
Anonymous 10 Collector
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Just Qvigstad
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R81: Catalogue RADIOTECHNIQUE 1929
Christian ADAM
More ...
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Collection of
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