radiomuseum.org
Please click your language flag. Bitte Sprachflagge klicken.

W428

Information - Help 
ID = 15050
       
Country:
Netherlands
Brand: Longlife, the Hague
Tube type:  Triode, vacuum 
  Ca. 1925 up to 1945 rare.
Identical to W428
Similar Tubes
Normally replaceable-slightly different:
  E428
Production stop Feb.1938

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=F)
Filament Vf 4 Volts / If 0.9 Ampere / Indirect
Description The "Röhren-codex" lists this tube as a Thermion tube, but the brand is Longlife. this tube can have a B5 base or B4 with sidecontact. 
Dimensions (WHD)
incl. pins / tip
48 x 112 x 35 mm / 1.89 x 4.41 x 1.38 inch
Weight 50 g / 1.76 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   1-2-1935

e415ws1507ws3030pin5_1.png W428
Peter den Boer

More ...

Just Qvigstad

Collection of

 
w428.jpg

 

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