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5-428

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ID = 13279
       
Country:
Netherlands
Brand: Thermion; Lent (Nijmegen)
Tube type:  Triode, vacuum   Universal 
  Ca. 1925 up to 1945 rare.
Identical to 5-428
Similar Tubes
Other shape (e.g. bulb type):
  T5-428
Normally replaceable-slightly different:
  E428
Production stop Feb.1938
Predecessor Tubes I1304  

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=F)
Filament Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   1933

5428base.png 5-428
Peter den Boer


Just Qvigstad
5428data1.png
5-428: own collection
Peter den Boer

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5_428.jpeg

5-428
 

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