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TB552

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ID = 13081
       
Country:
Great Britain (UK)
Brand: Dario - Impex Electrical Ltd. (see also Dario France); London
Tube type:  Screen-grid Tetrode   Controlling (mu) 
Identical to TB552

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Er)
Filament Vf 2 Volts / If 0.15 Ampere
Information source Taschenbuch zum Röhren-Codex 1948/49   

s_2_g_8.gif TB552: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20


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