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1F7GH

Information - Help 
ID = 3982
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Double Diode-Pentode 
Identical to 1F7GH

Base Octal (Int.Octal, IO) K8A, USA 1935 Top contact with a cap.
Filament Vf 2 Volts / If 0.06 Ampere / Direct
Information source Essential Characteristics, GE 1973   
 
1f7gh.jpg
1F7GH: EP
Egon Penker

 
1f7gh_sock.png
1F7GH: Grundig Rö-Tabu, zum M1, Band 3, 1948
Anonymous 15 Collector

 
1f7gh_spec.png
1F7GH: Grundig Rö-Tabu, zum M1, Band 3, 1948
Anonymous 15 Collector


from Just Qvigstad

Usage in Models 9= 1937 ; 1= 1938? ; 38= 1938 ; 1= 1939? ; 7= 1939 ; 5= 1940 ; 12= 1941 ; 1= 1942?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):74


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