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9BK7A

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ID = 31923
       
 
   
Tube type:  Double Triode 
Identical to 9BK7A
Similar Tubes
Heater different:
  19BK7A ; 5BK7A ; 6BK7A

Base Noval, 9 pin miniature (USA pico-9) B9A
Was used by Radio/TV-reception etc.
Filament Vf 9.4 Volts / If 0.3 Ampere / Indirect / Specified current AC/DC ~ = (Series working)

9bk7a_so.png 9BK7A: ARRL Handbook 1972
Anonymous 10 Collector


Just Qvigstad
 

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