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A-21

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ID = 27926
       
Country:
United States of America (USA)
Brand: Amperex; New York
Tube type:  Transmitting Triode, air cooled   Power/Output 
Identical to A-21

Base Jumbo 4-pin bayonet (1918) Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Direct
Information source -- Collector info (Sammler)   


Just Qvigstad
 
a21.jpg

 

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