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2X2

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ID = 4271
       
Country:
United States of America (USA)
Brand:
Tube type:  Half-Wave Vacuum Rectifier   Power-supply 
Identical to 2X2 = 879
Similar Tubes
Normally replaceable-slightly different:
  2B21
Other base and data slightly different:
  2Ц2С
Base UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bm) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 2.5 Volts / If 1.7 Ampere / Half indirect
Dimensions (WHD)
incl. pins / tip		 x 108 x 42 mm / x 4.25 x 1.65 inch
Tube prices 3 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
4ab.png 2X2
Emilio Ciardiello
More ...
Just Qvigstad 		2x2_techdat01.png
2X2: Sylvania Technical Manual
Peter Hoddow
More ...
Usage in Models 4= 1939 ; 1= 1940? ; 1= 1942? ; 1= 1942 ; 1= 1943?? ; 1= 1943? ; 1= 1944? ; 2= 1944 ; 1= 1945?? ; 4= 1946 ; 1= 1947?? ; 4= 1947 ; 2= 1948?? ; 1= 1949 ; 3= 1950?? ; 1= 1951?? ; 1= 1953 ; 1= 1955 ; 1= 1956? ; 1= 1959? ; 2= 1959
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):35

Collection of

Karl - Heinz Bossan (D)
Patrice Zeissloff (F)
Jean-Jacques Pontigny (F)
Jay Kinnard (USA)
Bruce Morgenstern (CDN)
Valery Gromov (RUS)
Fin Stewart (AUS)
Collection of a member from D
Collection of a member from D
Peter Pfeiffer (D)
Piotr Jachymczyk (PL)
Christian Schaufelberger (CH)
Georges Werts (B)
Tomasz Szczesniak (PL)
Michael Gnaedig-Fischer (MEX)
George Papaiz (CDN)
Aldo Patriarca (CH)
 
2x2_a.jpg

2X2
 
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