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H410

Country:  Great Britain (UK)      Brand:  Marconi-Osram - (Valves/Tubes); GB 
  Tube type:  Triode, vacuum 
Tube ID = 14268
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Identical to H410 = CV2981
Similar Tubes Normally replaceable-slightly different:
 D40
Heater different:
 H610
First year   1929 - - Manufacturers Literature

Base Europe 4-Pin (A, 4A, B4, since 1914) (Codex=Eo)
Filament Vf 4 Volts / If: 0.1 Ampere / -: Direct /
Description High-gain triode for 4V accumulator. Mu 40. 
Literature Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   

h410.jpg
H410: www.tubedata.info/
Christian Schaufelberger

 
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H410: Telefunken Werkstattbuch
Wolfgang Bauer

 
h410_data.png
H410: MARCONI VALVES MANUAL
Jose Casas-Avalos


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