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230

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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 = CX330 = UX230 = T-31_triad = NX-230 = C-230 = NU-30 = 30 = 130 = 430
Similar Tubes
Normally replaceable-slightly different:
  A210
First year 1930 Saga of the Vacuum Tube, Tyne page 329 and 330.
First Source (s)
1930 : Saga of the Vacuum Tube, Tyne p.329,330
Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Filament Vf 2 Volts / If 0.06 Ampere / Direct / Specified voltage AND current 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)
Information source Taschenbuch zum Röhren-Codex 1948/49   
230_so.png 230: ARRL Handbook 1972
Anonymous 10 Collector

Just Qvigstad
Usage in Models 2= 1930? ; 5= 1930 ; 1= 1931?? ; 4= 1931 ; 1= 1932?? ; 2= 1932? ; 15= 1932 ; 1= 1933?? ; 2= 1933? ; 10= 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):130

Collection of

George Papaiz (CDN)
Robert Gillespie (USA)
David Erali (USA)
Norbert Konersmann (D)
 
230_westinghouse.jpg

230
 
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