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EF6bi Info
           
  Tube type:  PENTODE   Universal 
Tube ID = 3366
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Identical to EF6bi
Similar Tubes EF6 (other class quality (otherw. equal))  
First Source (s) 1949 : Rundfunk-Röhren, Ratheiser, 1949
Predecessor Tubes EF6   AF7  
Successor Tubes 1948 EF40  

Base Europe side contact base P (P8A) Top contact with a cap
Was used by Radio/TV-reception etc.
Filament -: Indirect / -: Parallel / series AC/DC / If: 0.2 Ampere / Vf 6.3 Volts /
Description Low hum version of the EF6 with bifilar wounded heater 
Text in other languages (may differ)
Literature Rundfunk-Röhren, Ratheiser, 1949   

ef6bif_im.jpg
I.M.
Iven Müller

 
28_38.png
Telefunken Werkstattbuch
Wolfgang Bauer

 
Usage in Models   1= 1950 ; 3= 1951 ; 1= 1953 ; 1= 9999 ;
Number of Models with this tube   6
No further Information for

EF6bi    

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