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W447

Information - Help 
ID = 51592
       
Country:
Netherlands
Brand: Longlife, the Hague
Tube type:  Vacuum Pentode 
  Ca. 1925 up to 1945 rare.
Identical to W447
Similar Tubes
Normally replaceable-slightly different:
  E447
Production stop Feb.1938

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 Top contact screw type.
Filament Vf 4 Volts / If 1.1 Ampere / Indirect
Information source - - Manufacturers Literature   1-2-1935
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W447: Telefunken Werkstattbuch
Wolfgang Bauer

 

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