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EF55 Info
Country:  Great Britain (UK)      Brand:  Mullard Radio Valve Co. Ltd.;  
  Tube type:  Vacuum Pentode (without beam power)   Text 
Tube ID = 18601
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Identical to EF55 = CV173
Similar Tubes CV296 (can normally be replaced - small diff'ce)  

Base Loctal-9-Pin (B9G)
Was used by Industrial
Filament -: Indirect / -: Parallel, (AC/DC) / If: 1 Ampere / Vf 6.3 Volts /
Description Video use. Sharp cutoff with Gm of 12 at Ia of 40mA. 
Dimensions (WHD) 34 x 95 x mm / 1.34 x 3.74 x inch
Weight 50 g / 1.76 oz
Tube prices 0 Tube prices (visible for members only)
  ef55.gif
  Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus
ef55.jpg
RFJ
Roy Johnson

 
lo31_2.png
RTT 1964 (Franzis) 10. Auflage
Martin Renz

 
ef55_techdat01.png
SEL Handbuch 1964
Peter Hoddow

No further Information for

EF55    

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03DecX