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G425_Longlife

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ID = 25932
       
Country:
Netherlands
Brand: Longlife, the Hague
Tube type:  Triode, vacuum 
  Ca. 1925 up to 1945 rare.
Identical to G425_Longlife
Similar Tubes
Normally replaceable-slightly different:
  A425
Production stop Feb.1938

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Filament Vf 4 Volts / If 0.06 Ampere / Direct / Battery =
Description This tube is listed as Thermion tube in the Grundig Rohren-Taschenbuch 1948, but the brand is Longlife. Used for HF and LF amplification. 
Literature - - Manufacturers Literature   1-2-1935
 
g425_longlife.jpg
G425_Longlife: own collection
John Koster

 
1_10~~2.png
G425_Longlife: Telefunken Werkstattbuch
Wolfgang Bauer

 


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