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A408

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ID = 1632
       
Country:
Germany
Brand: Valvo GmbH, Radioröhrenfabrik; Hamburg
Tube type:  Triode, vacuum   Universal 
Identical to A408
Similar Tubes
Normally replaceable-slightly different:
  A420 ; RE084
First year 1926 Tube leaflet collection E.Erb Analysis by original leaflets
Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Filament Vf 4 Volts / If 0.08 Ampere / Direct / Battery =
Tube prices 6 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   
a408_application.png
A408: Valvo-Röhren Prospekt ca. 1933
Achim Dassow
1_1.png A408: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad 		vv34_07.png
A408: JR
Jacob Roschy
More ...
Usage in Models 1= 1926?? ; 1= 1926? ; 2= 1926 ; 5= 1928?? ; 4= 1928? ; 7= 1928 ; 2= 1929?? ; 2= 1929? ; 2= 1929 ; 1= 1931?
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):27
Literature "Der Bastler" Vol. 2 No. 23 | 1928-06-03
Literature "VALVO Röhren in höchster Vollendung"

Collection of

Wolfgang Bauer (A)
Peter Steffen (CH)
Pedro Prieto-Castro (E)
Collection of a member from D
Egon Strampe (D)
Michael Mischke (D)
Jan Peter Brömme (D)
Sigurd Hauschild (D)
Roland Biesler (D)
Jürgen Tiedmann (D)
Karl - Heinz Bossan (D)
Collection of a member from D
Hartmut Völler (D)
 
a408_2.jpg

A408
 
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