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239

Information - Help 
ID = 9675
       
Country:
United States of America (USA)
Brand:
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to 239 = ER239 = NU-239 = RYB239 = T-39 = NU-39/44
Similar Tubes
Normally replaceable-slightly different:
  39/44
Other class quality (otherwise equal):
  CV1771
Heater different:
  NY65
First Source (s)
Apr.1932 : -- Original-techn. papers. Radio News

Base UY-Base, 5 Pins (USA, April 1927) (Codex=Hfo) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Parallel / series AC/DC
Dimensions (WHD)
incl. pins / tip
x 118 x 38 mm / x 4.65 x 1.50 inch
Weight 36 g / 1.27 oz
Tube prices 1 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   
 
239nationalunion_2_klein.jpg
239
Geri Meier

 
s_228_g_5.gif
239: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe

 

from Just Qvigstad

Usage in Models 3= 1932? ; 9= 1932 ; 1= 1933?? ; 2= 1933 ; 1= 1934?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):16


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