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T5-446

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ID = 10290
       
Country:
Netherlands
Brand: Thermion; Netherlands
Tube type:  Vacuum Pentode   RF/IF-Stage 
  Ca. 1925 up to 1945 rare.
Identical to T5-446
Similar Tubes
Other shape (e.g. bulb type):
  5-446 ; 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 This is a Thermiode, a glass tube in a shielding of nickel-iron alloy to prevent electric or magnetic interference. 
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   1933
 
5446_so~~1.png
T5-446: rtt
Michael Schlör

 

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