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EK90 Info
Country:  Europe      Brand:  Common type Europe 
  Tube type:  Pentagrid-Converter (Heptode)   Pentagrid (new)   Controlling (mu) 
Tube ID = 1430
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Identical to EK90 = 6BE6 = 6a2p = X77 = X727 = CV453 = 6A2
Similar Tubes 5750 (other class quality (otherw. equal))   5760 (other class quality (otherw. equal))   6BE6W (other class quality (otherw. equal))   HK90 (Heater different)  
First Series   1950 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s) Nov.1951 : Funkschau (FS) # 22

Base Miniatur-7-Pin-Base B7G, USA 1940
Was used by Radio/TV-reception etc.
Filament -: Indirect / -: Parallel / series AC/DC / If: 0.3 Ampere / Vf 6.3 Volts /
Tube prices 0 Tube prices (visible for members only)

  ek90.gif
  Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus
ek90_im.jpg
IM
Iven Müller

 
mi31.png
RTT 1974 (Franzis) 13. Auflage
Martin Renz

 
ek90_techdat01.png
SEL Handbuch 1964
Peter Hoddow

Usage in Models   1= 1950?? ; 6= 1951 ; 1= 1952? ; 4= 1952 ; 3= 1954? ; 1= 1954 ; 1= 1955?? ; 1= 1955 ; 2= 1956? ; 3= 1956 ; 1= 1957?? ; 3= 1957? ; 2= 1958?? ; 1= 1958 ; 1= 1961?? ; 1= 1961 ; 1= 1964 ; 1= 1966 ; 1= 1968?? ;
Number of Models with this tube   35
No further Information for

EK90    

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09JulX