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Master_Sodium

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ID = 76242
       
Country:
United States of America (USA)
Brand: Master Sodium, Electro Chemical Laboratories; New York & San Francisco
Developer: Master Sodium, Electro Chemical Laboratories; New York & San Francisco 
Tube type:  Triode, vacuum   Detector 
  <1925 very rare. ***
Identical to Master_Sodium

Base UV-Base (4 Pins+Bayonet, USA 1914 WE)
Was used by Radio/TV-reception etc.
Filament Direct / Battery =
Description This tube rare and unusual. It is fitted with a Shaw base and has an outside frosted bulb. Very little information is available for it. 


Just Qvigstad
 
master_sodium_tube_gf.jpg

 

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