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X20

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ID = 21524
       
Country:
Great Britain (UK)
Brand: GEC, General Electric Co Ltd., GENALEX; London
Tube type:  Pentagrid-Converter (Heptode)   Frequency converter   Controlling (mu) 
Identical to X20 = DK92

Base Miniatur-7-Pin-Base B7G, USA 1940
Was used by Radio/TV-reception etc.
Filament Vf 1.4 Volts / If 0.05 Ampere / Direct / Battery =
Dimensions (WHD)
incl. pins / tip
19 x 54 x mm / 0.75 x 2.13 x inch
Information source Röhren-Taschen-Tabelle, (Franzis RTT)   
- - Manufacturers Literature   GEC Data sheet May 1958

mi21_g_3.gif X20: RTT Schwandt
Günther Stabe † 19.8.20


Just Qvigstad
Usage in Models 1= 1925?? ; 1= 1940??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2
 

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