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JP728

Information - Help 
ID = 78057
       
Country:
Hungary
Brand: Tungsram; Budapest (see also British T.)
Tube type:  Vacuum Pentode 
Identical to JP728
Similar Tubes
Normally replaceable-slightly different:
  328A ; 4328A

Base Europe 6-Pin B6 (Hx B) 1933 Top contact with a cap.
Was used by Telephony
Filament Vf 7.5 Volts / If 0.425 Ampere / Indirect / Parallel, (AC/DC)
Information source -- Collector info (Sammler)   
 
jp728.jpg
JP728: O.J.
Ottó Jancsek

 

from Just Qvigstad


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