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1A4

Information - Help 
ID = 3567
       
Country:
United States of America (USA)
Brand:
Tube type:  Screen-grid Tetrode   RF/IF-Stage   Controlling (mu) 
Identical to 1A4
Similar Tubes
Normally replaceable-slightly different:
  1A4E
Base UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bu)
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.06 Ampere / Direct / Battery =
Tube prices 2 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   
s_220_g.gif 1A4: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20
More ...
Just Qvigstad 		1a4data.png
1A4: own collection
Peter den Boer
Usage in Models 1= 1933?? ; 1= 1935?? ; 4= 1935? ; 11= 1935 ; 2= 1936?? ; 9= 1936? ; 133= 1936 ; 19= 1937?? ; 11= 1937? ; 74= 1937 ; 12= 1938?? ; 3= 1938? ; 66= 1938 ; 10= 1939?? ; 5= 1939? ; 9= 1939 ; 5= 1940?? ; 1= 1940? ; 1= 1940 ; 2= 1941?? ; 3= 1941? ; 1= 1941 ; 1= 1942?? ; 2= 1947??
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):386

Collection of

Bruce Morgenstern (CDN)
Siegmar Mey (D)
Patrice Zeissloff (F)
Collection of a member from FIN
Baptiste Hobbe (CDN)
 
1a4_kenrad_rmf.jpg

1A4
 
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