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X222

Information - Help 
ID = 65147
       
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 X222 = UX222 = CX322 = NX-222
Similar Tubes
Normally replaceable-slightly different:
  22 ; 222 ; RX222

Base UX-Base (4 Pins (2 thick, USA 1924, UX) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 3.3 Volts / If 0.13 Ampere / Direct
Dimensions (WHD)
incl. pins / tip
x 123 x 45 mm / x 4.84 x 1.77 inch
Weight 48 g / 1.69 oz
Information source - - Manufacturers Literature   
 
440_2~~1.png
X222: Telefunken Werkstattbuch
Wolfgang Bauer

 
x_222_and_222ac.png
X222: own collection
Peter den Boer


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