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4MK8

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ID = 4458
       
 
   
Tube type:  Double Pentode 
Identical to 4MK8
Similar Tubes
Heater different:
  6MK8A

Base Noval, 9 pin miniature (USA pico-9) B9A
Filament Indirect / Specified current AC/DC ~ = (Series working)
Tube prices 1 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   

4mk8_sockel.png 4MK8: RCA Tube Manual
Peter Hoddow


Just Qvigstad
4mk8_techdat01.png
4MK8: RCA Tube Manual
Peter Hoddow

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4mk8_1.jpeg

4MK8
 

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