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12A8M

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ID = 40933
       
Country:
Canada
Brand: Rogers-Majestic, Standard Radio Manufacturing, Rogers Radio Tubes; Toronto
Tube type:  Pentagrid-Converter (Heptode) 
Identical to 12A8M
Similar Tubes
Normally replaceable-slightly different:
  12A8GT ; 12A8MT

Base Octal (Int.Octal, IO) K8A, USA 1935
Filament

414_14.png 12A8M: Telefunken Röhrenhandbuch
Wolfgang Bauer

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Just Qvigstad
Usage in Models 6= 1939 ; 15= 1940 ; 1= 1941? ; 1= 1941

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):23

Collection of

 
12a8mpix.jpg

 

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