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W446

Information - Help 
ID = 10455
       
Country:
Netherlands
Brand: Longlife, the Hague
Tube type:  Vacuum Pentode   RF/IF-Stage 
  Ca. 1925 up to 1945 rare.
Identical to W446 = E446
Production stop Feb.1938

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fco) Top contact screw type.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC)
Description The "Röhren-codex" lists this tube as a Thermion tube, but the brand is Longlife. The tube in the picture is a Longlife Superior type W446. 
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   1-2-1935
 
w446.jpg
W446: From auction site Marktplaats.
John Koster

 
w446_so.png
W446: rtt
Michael Schlör

 

from Just Qvigstad


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