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230

Information - Help 
ID = 3907
       
Country:
United States of America (USA)
Brand:
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  Triode, vacuum   Universal 
Identical to 230 = 30 = 130 = 430 = CX330 = NX230 = UX230 = NU-30
Similar Tubes
Normally replaceable-slightly different:
  A210
First year 1930 Saga of the Vacuumtube, Tyne page 329 and 330.
First Source (s)
1930 : Saga of the Vacuumtube, Tyne p.329,330

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Filament Vf 2 Volts / If 0.06 Ampere / Direct / Parallel / series AC/DC
Description

The tube UX230 (230, 30) was announced by RCA in June 1930. This is according to "Saga of the Vacuum Tube" by Tyne, pages 329 & 330. In its original form, the 230 has a tubular "T9" bulb. During its commercial life, the bulb shape was changed to S12 and later ST12. Some tubes (such as Silvertone) were made with an ST14 bulb. 

Tube prices 1 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
230_westinghouse.jpg
230: GP
George Papaiz

 
230_so.png
230: ARRL Handbook 1972
Michael Schlör

 

Usage in Models 1= 1930?? ; 2= 1930? ; 5= 1930 ; 1= 1931?? ; 4= 1931 ; 1= 1932?? ; 1= 1932? ; 15= 1932 ; 1= 1933?? ; 2= 1933? ; 9= 1933 ; 1= 1934?? ; 1= 1934? ; 19= 1934 ; 13= 1935 ; 53= 1936

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):129


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