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XXL

Country:  United States of America (USA)      Brand:  Common type USA tube 
  Tube type:  Triode, vacuum   Universal 
Tube ID = 3744
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Identical to XXL
Similar Tubes Other class quality (otherwise equal):
 7A4
Base Loctal-8, B8G (Sylvania, 1938) (Codex=W)
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If: 0.3 Ampere / -: Indirect / -: Parallel / series AC/DC /
Literature Taschenbuch zum Röhren-Codex 1948/49   

s_275_g_1.gif
W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe
 
xxl_data.png
Raytheon Manual
Heinz Höger
Usage in Models (calculation each 25th of the month)   26= 1940 ; 26= 1941 ;
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):   52
No further Information for

XXL    

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