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422A

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ID = 12451
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Screen-grid Tetrode   Audio Frequency 
Identical to 422A
Similar Tubes
Normally replaceable-slightly different:
  422 ; B342
First Source (s)
Aug.1930 : Philips Bulletin R1164, p. 32

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 Volts / If 0.13 Ampere / Indirect
Dimensions (WHD)
incl. pins / tip
x 123 x 45 mm / x 4.84 x 1.77 inch
Weight 48 g / 1.69 oz
Tube prices 1 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   

s_220_g_3.gif 422A: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20


Just Qvigstad
 
usa_westernelectric_422a.jpg

422A
 

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