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1H4

Information - Help 
ID = 4028
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Triode, vacuum 
Identical to 1H4

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Uo)
Filament Vf 2 Volts / If 0.06 Ampere / Direct / Battery =
Information source Taschenbuch zum Röhren-Codex 1948/49   
  1h4.gif
  1H4: ficha de valvulas
Getulio Jimenez-Gomez
 
320_2.png
1H4: Telefunken Werkstattbuch
Wolfgang Bauer

 
1h4g.gif
1H4: 2058 caracteristicas de valvulas edit bruguera
Jose Ramon Fernandez-Ibañez


from Just Qvigstad

Usage in Models 1= 1936? ; 3= 1937 ; 3= 1938?? ; 2= 1938 ; 8= 1939?? ; 3= 1939 ; 1= 1941 ; 2= 1947?? ; 2= 1948

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):25

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