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UX201A

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ID = 3613
       
Country:
United States of America (USA)
Brand:
Common type USA tube/semicond.
Common type USA tube/semicond. Canadian General Electric (Canada) (C.G.E. or CGE); Toronto, ON Canadian Westinghouse, Hamilton Don Shinkukan Seisakusho - Don Vacuum Valve Mfg.; Tokyo Elevam エレバム, Miyata Seisakujo; Tokyo American (Feldstern & McCusker tube brand) Amplion USA = Tube brand Archatron; Owensboro, KY Arco Tube Company; Newark (NJ) Aristocrat; (where?) Atlantic Electric Lamp Company; Danvers, MA Belltron; (where ?) Blue Grass (tubes) - see also Belknap; Lousiville, KY Bond Electric Corp.; Jersey City, NJ Boone (tubes), Tri-State Products Corp.; New York, NY Buck (tube brand) By Heck (tube brand) Defender (tubes) - see also Sears; Chicago, IL Distatron (tubes), DX Electric Products Corp.; New York, NY Econotron (tubes), Nulite Electric Co.; New York City, NY Gold Bond (tube brand) Grandtone, F. & W. Grand (5-10-15 cent stores); (where?) Hygrade Lamp Co. (Neptron); Salem, Massachusetts Jewel Radio Company; New York, NY Kelly Tube Co.; New York, NY Ken-Rad, The Kentucky Radio Corporation; Owensboro, KY KMA, May Seed and Nursery Co.; Shenandoah, IA Milo (tube brand) Neontron Co.; New York City, NY OK (tubes), S.S. Kresge Co.; Detroit, MI Panama (tubes) PAR Tube Company; Newton Falls, OH Paramount Radio Tube Co.; Brooklyn, NY Permatron (tubes), Duratron Products Corp.; Union City, NJ Qualitron Manufacturing Co.; Newark, NJ Rayo Tube Co.; New York City, NY Ray-O-Vac / Rayovac, French Battery Co.; Madison (WI) RCA (RCA Victor Co. Inc.); New York (NY) Roxy; (Where ?) Silver Shield, Grenpark Tool Co.; New York, NY Sterling (Tube brand) Thermotron, EMKO Radio Manufacturing Co.; Newark, NJ Ureco, United Radio and Electric Co.; Newark (NJ) and Brooklyn (NY) Via Radio (tube brand) Vox, Munder Electrical Co.; Springfield, MA Waco (tube brand); (where?) Wearwell, Star Square Auto Supply Co; St. Louis, MO
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Triode, vacuum   Universal 
Identical to UX201A = CX301A = AX201A = D401A = UX-201-A_Japan = 201A = 235D = ER201A = SX201A = X-201A = TC201A = AWA101X = R221-DX = 201 = GX201A = MX201A = LS201A = FX201A = BX-201A = C-201A = OK-X201A = CF501 = CX201A = 4600 = 4601_WLS = EX-1A = 401A_UX = 301A = 57T201A = VX201A = HF201A_perfectron = TSX201A = LB-201A = P201A = DC201A_UX = SX01A = SLX201A = RH201A = NVV201A = PA201A = D201A = G&R201A = NX-201A = A_UX-base = ZP201A = BG-201A = RayX-201A = D-201A = EX201A = Z201A = S01A = E-201-A = G201A = 6505_Defender = GSX401A = DX201A = CTX201A = GSX-201A = 2976 = JX201A = M-201-A = RYB201A = T-201A = SW201A = A-201 = XL201A = TS201A = R201A = A_MusicMaster
Similar Tubes
Other shape (e.g. bulb type):
  01A ; DX-235 ; M-201A ; T01A
Normally replaceable-slightly different:
  201A_Magnavox ; 201A_Philips ; 3000X1-A ; 501A_UX ; 508X ; 525C ; 5VAX ; AX ; AX+ ; C508 ; D-01A ; F201A ; LJ4 ; PR-1-B ; PT-201A ; SE-4374 ; SW501AX ; SX4000 ; WX25
Other class quality (otherwise equal):
  CTX201-RF
Other characteristic (electr. data):
  CT201-RF ; UX201C ; ZP100
Other base:
  201A_Japan ; AWA55 ; B509 ; C509A_B4 ; C509_B4 ; DC201A_UV ; R221-D ; R46 ; UX201A_UV199base
Other base and other heater:
  RT56
Multiple differences or of other kind:
  Detector_Huppert
First year Aug.1925 Saga of the Vacuum Tube, Tyne page 315.
Predecessor Tubes UV201A  
Successor Tubes 01A   UX240   UX226   226  

Base UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bo)
Was used by Radio/TV-reception etc.
Filament Vf 5 Volts / If 0.25 Ampere / Direct / Battery =
Description

Tyne page 308ff brings the details of history. Here the main points only: The first tubes RCA is marketing in 1920 are the detector tube UV200 with argon gas filling and the UV201 Amplifier. Manufacturer was General Electric (GE).

In 1922 GE replaces the UV201 with the UV201A, having now a thorium filament.

In August 1925 this tube comes with a new base and standardised construction (of 1923) for neutrodyne apparatus and is then called UX201A (short name 201A - which should not to be confused with the Western Electric 201A, the Myers tube 201A and the "Star Tube" 201A). Cunningham is naming the tube CX301A.

By having the tube with a shoulder type glass envelope (dome type) in 1932 the designation is changed to 01A.

 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
x 108 x 45 mm / x 4.25 x 1.77 inch
Weight 47 g / 1.66 oz
Tube prices 14 Tube prices (visible for members only)
Information source Saga of the Vacuum Tube, Tyne   p. 298, 315, 317, 319
Tube Lore (II)   p. 25
-- Collector info (Sammler)
Taschenbuch zum Röhren-Codex 1948/49

ux201a_detector_sch.png
UX201A: RCA
Heribert Jung
    More ...
uxsockel_11.png UX201A: KoBi
Konrad Birkner † 12.08.2014


Just Qvigstad
ux201a_data1.png
UX201A: eigenes Dokument
Roland Böhme

More ...
Usage in Models 4= 1925?? ; 20= 1925? ; 140= 1925 ; 4= 1926?? ; 37= 1926? ; 187= 1926 ; 4= 1927?? ; 13= 1927? ; 113= 1927 ; 6= 1928? ; 42= 1928 ; 2= 1929?? ; 1= 1929? ; 21= 1929 ; 1= 1930?? ; 4= 1930? ; 17= 1930 ; 1= 1931? ; 2= 1932?? ; 9= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):628


Collection of

 
ux201a_43rm400s.jpg

UX201A
 

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