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EF97

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ID = 1915
       
Country:
Europe
Brand: Common type Europe tube/semicond.
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to EF97 = 6К8П = 6ES6
First year 1957 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
Aug.1955 : Funkschau # 15

Base Miniatur-7-Pin-Base B7G, USA 1940
Filament Indirect
Description 6- und 12-Va-Niedervoltröhre für Hybrid-Autoradios. 
Tube prices 8 Tube prices (visible for members only)
  ef97.png
  EF97: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
 
ef97_27rm353d.jpg
EF97: Collection JR
Jacob Roschy

 
ef97_so.png
EF97: rtt
Michael Schlör

 
ef97_mullard_data_01.png
EF97: Mullard - original papers
Michael Poll


Usage in Models 2= 1957 ; 1= 1958? ; 6= 1958 ; 11= 1959 ; 1= 1960? ; 9= 1960 ; 1= 1961?? ; 1= 1961

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):32



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