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197

Information - Help 
ID = 17450
       
 
   
Tube type:  Voltage Regulator, single 
Identical to 197

Base Swan-Bayonett size not known
Filament
Information source Taschenbuch zum Röhren-Codex 1948/49   
 
cz_tesla197_front.jpg
197: From my collection
Robert Sarbell

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