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1B7G

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ID = 4118
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  HEPTODE 
Identical to 1B7G

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=UT)
Filament Vf 1.4 Volts / If 0.1 Ampere
Tube prices 1 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   

1b7g_sockel.png 1B7G: Essential characteristics
Peter Hoddow


Just Qvigstad
1b7g_techdat.png
1B7G: Essential characteristics
Peter Hoddow

Usage in Models 4= 1939 ; 6= 1940?? ; 11= 1940 ; 21= 1941 ; 5= 1946

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):47
 

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