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422

Information - Help 
ID = 12450
       
Country:
United States of America (USA)
Brand:
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Screen-grid Tetrode   Audio Frequency 
  Ca. 1925 up to 1945 rare.
Identical to 422 = CX322 = 122 = 22 = TX-222 = X222RF = PM222
Similar Tubes
Normally replaceable-slightly different:
  UX222

Base UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bu) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 3.3 Volts / If 0.13 Ampere / Direct / Battery =
Description

Plate Volts = 135 max, controle grid Volts = 1.5, screen grid Volts - 45 max.

 
Dimensions (WHD)
incl. pins / tip
45 x 123 x mm / 1.77 x 4.84 x inch
Weight 50 g / 1.76 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   
-- Collector info (Sammler)
 
s_220_g_2.gif
422: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20

 

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