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R412

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ID = 14653
       
Country:
Hungary
Brand: Tungsram; Budapest (see also British T.)
Tube type:  Triode, vacuum 
Identical to R412
Similar Tubes
Normally replaceable-slightly different:
  HR410 ; M350

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.12 Ampere / Direct / Battery =
Information source Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 95, p. 130
Taschenbuch zum Röhren-Codex 1948/49   
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren

r412_sock.png R412: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

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Just Qvigstad

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tungsram_r412_bild1.jpg

R412
 

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