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235

Information - Help 
ID = 2655
       
Country:
United States of America (USA)
Brand:
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  Screen-grid Tetrode   RF/IF-Stage   Controlling (mu) 
  Ca. 1925 up to 1945 rare.
Identical to 235 = 35 = 35/51 = 435 = F235 = UY235 = ER235 = MY235 = PU035 = SY235 = C335 = MX235 = T-51 = NU-35-51 = T-35 = RYB235
Similar Tubes
Normally replaceable-slightly different:
  235/C ; ER551 ; RYB551
Differences not known by us:
  235A
Successor Tubes NY235  
Base UY-Base, 5 Pins (USA, April 1927) (Codex=Ha) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 2.5 Volts / If 1.7 Ampere / Indirect / Parallel, (AC/DC)
Description The 235 was originally developed by RCA and announced in March 1931. It was designed for use in RF and IF stages of a/c radios. The earliest RCA tubes have a conical grid. 
Dimensions (WHD)
incl. pins / tip		 45 x 123 x mm / 1.77 x 4.84 x inch
Weight 50 g / 1.76 oz
Tube prices 1 Tube prices (visible for members only)
Information source -- Collector info (Sammler)   
Taschenbuch zum Röhren-Codex 1948/49   
  235_sch.png
  235: Allied Radio Corp.
Günter Kudicke
 
235_a.jpg
235: scc
Christian Schaufelberger
 
s_225_g_5.gif
235: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20
 
rca235.png
235: Electronics, April 1931
Achim Dassow

from Just Qvigstad
Usage in Models 1= 1929? ; 4= 1930? ; 1= 1930 ; 4= 1931?? ; 12= 1931? ; 40= 1931 ; 3= 1932?? ; 13= 1932? ; 108= 1932 ; 4= 1933?? ; 3= 1933? ; 3= 1933 ; 5= 1934?? ; 1= 1935? ; 1= 1939?
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):203
Collection of Willi Ribbe (D)
Collection of Christian Schaufelberger (CH)
Collection of Karlheinz Fischer (D)
Collection of Peter Steffen (CH)
Collection of Nigel Hulse (ZA)
Collection of Cristian Wolkenstein (RA)
Collection of George Papaiz (CDN)
Collection of Jorge Tavares (F)
Collection of Pedro Prieto-Castro (E)
Collection of Robert Gillespie (USA)
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