Antique radios, Old Time Radios
UX201A
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Country:
United States of America (USA)
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Brand:
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Common type USA tube/semicond.
Canadian General Electric (Canada) (C.G.E. or CGE); Toronto, ON
Don Shinkukan Seisakusho - Don Vacuum Valve Mfg.; Tokyo
Elevam, Miyata Works; 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 ?)
Bond Electric Corp.; Jersey City, NJ
Boone (tubes), Tri-State Products Corp.; New York, NY
Buck (tube brand)
By Heck (tube brand)
Distatron (tubes), DX Electric Products Corp.; New York, NY
Grandtone, F. & W. Grand (5-10-15 cent stores); (where?)
Hygrade Lamp Co. (Neptron); Salem, Massachusetts
Jewel Radio Company; New York, NY
Milo (tube brand)
OK (tubes), S.S. Kresge Co.; Detroit, MI
PAR Tube Company; Newton Falls, OH
Rayo Tube Co.; New York City, NY
RCA (RCA Victor Co. Inc.); New York (NY)
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| Developer: |
General Electric Co. (GE); Bridgeport CT, Syracuse NY |
| Tube type: |
Triode, vacuum Universal |
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| 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
= A_CeCo
= G201A
= CF501
= 6505_Defender
= CX201A
= GSX401A
= 4600
= 4601_WLS
= EX-1A
= DX201A
= 401A_UX
= CTX201A
= GSX-201A
= 301A
= 2976
= 57T201A
= JX201A
= M-201-A
= HF201A_perfectron
= A-201
= LB-201A
= P201A
= RH201A
= PA201A
= D201A
= NX-201A
= RayX-201A
= D-201A
= EX201A
= a_MusicMaster
= S01A
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| Similar
Tubes |
Other shape (e.g. bulb type):
01A
; DX-235
; M-201A
Normally replaceable-slightly different:
201A_Magnavox
; 201A_Philips
; 3000X1-A
; 508x
; 5VAX
; AX
; AX+
; D-01A
; SX4000
; WX25
; ZP201A
Other class quality (otherwise equal):
CTX201A-RF
Other characteristic (electr. data):
CT201-RF
Other base:
201A_Japan
; AWA55
; DC201A
; R221-D
Multiple differences or of other kind:
Detector_Huppert
|
| First year |
Aug.1925
Saga of the Vacuumtube, Tyne page 315.
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| Predecessor Tubes |
UV201A
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Successor Tubes
|
01A
UX240
UX226
226
|
| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bo)
|
| 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)
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| Tube prices |
14 Tube prices (visible for members
only)
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| Literature |
Taschenbuch zum Röhren-Codex 1948/49
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UX201A: RCA
Heribert Jung
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UX201A: scc
Christian Schaufelberger
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UX201A: KoBi
Konrad Birkner † 12.08.2014
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UX201A: eigenes Dokument
Roland Böhme
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):578
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