radiomuseum.org

 
Please click your language flag. Bitte Sprachflagge klicken.

W438

Information - Help 
ID = 15051
       
Country:
Netherlands
Brand: Longlife, the Hague
Tube type:  Triode, vacuum 
  Ca. 1925 up to 1945 rare.
Identical to W438
Similar Tubes
Normally replaceable-slightly different:
  E438
Production stop Feb.1938

Base Europe 5-Pin (O5A, B5) (Codex=F)
Filament Vf 4 Volts / If 1 Ampere / Indirect
Description The "Röhren-codex" lists this tube as a Thermion tube, but the brand is Longlife. LF amplification, resister coupling. 
Literature Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   1-2-1935
 
e415ws1507ws3030pin5_2.png
W438
Peter den Boer

 

You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]
  
rmXorg