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RS21

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ID = 28758
       
Country:
Germany
Brand: Telefunken Deutschland (TFK), (Gesellschaft für drahtlose Telegraphie Telefunken mbH
Tube type:  Transmitting Triode, air cooled 
Identical to RS21
Predecessor Tubes RS19  
Successor Tubes RS29  

Filament
Information source Saga of the Vacuum Tube, Tyne   page 441

 
d_telefunken_rs21_werksbild.jpg

 

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