radiomuseum.org

 
Please click your language flag. Bitte Sprachflagge klicken.

420

Information - Help 
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 = UX120 = CX220 = E_CeCo = CT120 = X120 = DC120 = MX120
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 x 25 mm / x x 0.98 inch
Information source Taschenbuch zum Röhren-Codex 1948/49   
 
s_217_g_23.gif
420: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe

 

from Just Qvigstad

You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]
  
rmXorg