Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 3366
Tube type:  Vacuum Pentode   Universal 
Identical to EF6bi
Similar Tubes
Other class quality (otherwise equal):
First Source (s)
1949 : Rundfunk-Röhren, Ratheiser, 1949
Predecessor Tubes EF6   AF7  
Successor Tubes 1948   EF40  

Base Europe side contact P8A (Au P, 8SC) Top contact with a cap.
Filament Vf 6.3 Volts / If 0.2 Ampere / Indirect / Specified voltage AND current AC/DC
Description Low hum version of the EF6 with bifilar wounded heater 
Text in other languages (may differ)
Tube prices 1 Tube prices (visible for members only)
Information source Rundfunk-Röhren, Ratheiser, 1949   

28_38.png EF6bi: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad
Usage in Models 2= 1950 ; 3= 1951 ; 1= 1953

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):6

Collection of



You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]