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420

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ID = 15377
       
Country:
United States of America (USA)
Brand:
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Triode, vacuum   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to 420 = E_CeCo = CT120 = X120 = DC120 = MX120 = UX120 = CX220
Similar Tubes
Normally replaceable-slightly different:
  420A

Base UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bo)
Was used by Radio/TV-reception etc.
Filament Vf 3 Volts / If 0.1 Ampere / Direct / Battery =
Dimensions (WHD)
incl. pins / tip
x 90 x 25 mm / x 3.54 x 0.98 inch
Weight 29 g / 1.02 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   
Tube Lore (II)   p. 199

s_217_g_23.gif 420: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20


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