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9-4A

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ID = 50749
       
Country:
United States of America (USA)
Brand: Amperite Co., Inc.; Union City / West New York (NJ)
Tube type:  Current Regulator, Iron in Hydrogen   Power-supply 
Identical to 9-4A

Base Octal (Int.Octal, IO) K8A, USA 1935
Filament Specified current AC/DC ~ = (Series working)
Information source - - -   
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6_4_34.png 9-4A
Emilio Ciardiello


Just Qvigstad

Collection of

 
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9-4A
 

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