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L425D

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ID = 11318
       
Country:
Germany
Brand: Valvo Radioröhrenfabrik GmbH; Hamburg
Tube type:  Vacuum Pentode   Power/Output 
Identical to L425D = PP430 = C453 = C443
Similar Tubes
Normally replaceable-slightly different:
  DW3 ; P425_Triotron ; TW425
First year 1929 Tube leaflet collection E.Erb Analysis by original leaflets
Successor Tubes L427D  

Base Europe 5-Pin (O5A, B5) (Codex=Foo)
Filament Vf 4 Volts / If 0.25 Ampere / Direct / Parallel, (AC/DC)
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
l425.jpg
L425D
Hartmut Völler

 
4_18.png
L425D: Telefunken Werkstattbuch
Wolfgang Bauer

 
l425d_spec.png
L425D: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector



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