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5-442S

Information - Help 
ID = 18371
       
Country:
Netherlands
Brand: Thermion; Netherlands
Tube type:  Screen-grid Tetrode 
  Ca. 1925 up to 1945 rare.
Identical to 5-442S = E442S
Similar Tubes
Other shape (e.g. bulb type):
  T5-442S
Production stop Feb.1938

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fc) Top contact screw type.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC)
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   1933
 
5442sbase.png
5-442S
Peter den Boer

 
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5-442S: own collection
Peter den Boer


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