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H4125D

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ID = 12760
       
Country:
Germany
Brand: Valvo Radioröhrenfabrik GmbH; Hamburg
Tube type:  Screen-grid Tetrode   RF/IF-Stage   Controlling (mu) 
Identical to H4125D = E445 = RENS1214 = VMS4
Similar Tubes
Normally replaceable-slightly different:
  S415N ; S431N
First year 1932 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
Sep.1932 : Funk Bastler 1932, Heft 41

Base Europe 5-Pin (O5A, B5) (Codex=Fc)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC)
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
h4125d_valvo.jpg
H4125D: HDH
Hans-Dieter Haase † 5.2.18

 
9_23.png
H4125D: Telefunken Werkstattbuch
Wolfgang Bauer

 
vv34_32.png
H4125D: Valvo-Röhren-Daten 1934
Jacob Roschy


Usage in Models 3= 1932 ; 1= 1933

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):4


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