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H4129D Info
Country:  Germany      Brand:  Valvo Radioröhrenfabrik GmbH; Hamburg 
  Tube type:  PENTODE   RF/IF-Stage   Controlling (mu) 
Tube ID = 2521
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Identical to H4129D = RENS1294 = E447
Similar Tubes S434N (can normally be replaced - small diff'ce)  
First Series   1933 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s) Oct.1933 : Funkschau (FS)

Base Europe 5-Pin (O5A, B5) (Codex=Fco)
Was used by Radio/TV-reception etc.
Filament -: Indirect / -: Parallel, (AC/DC) / If: 1.1 Ampere / Vf 4 Volts /
Literature Taschenbuch zum Röhren-Codex 1948/49   

  h4129dschem.gif.gif
  W.B.
Wouter Brughmans
h4129d_1.jpg
R. Aufils
Raynal Aufils

 
13_9.png
Telefunken Werkstattbuch
Wolfgang Bauer

 
vv34_34.png
Valvo-Röhren-Daten 1934
Jacob Roschy

Usage in Models   1= 1933 ; 3= 1934 ; 1= 1938?? ;
Number of Models with this tube   5
No further Information for

H4129D    

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