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A411

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ID = 1330
       
Country:
Germany
Brand: Valvo GmbH, Radioröhrenfabrik; Hamburg
Tube type:  Triode, vacuum 
Identical to A411
First Source (s)
Aug.1931 : Funk Bastler 1931 Heft 33

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Filament Vf 4 Volts / If 0.1 Ampere / Direct / Battery =
Information source Taschenbuch zum Röhren-Codex 1948/49   

1_5.png A411: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad
vv34_08.png
A411: JR
Jacob Roschy

Usage in Models 1= 1929 ; 3= 1933 ; 1= 1935?? ; 1= 1938??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):6

Collection of

 
a411_valvo_1.jpg

A411
 

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