RCA type UX201A "Radiotron" triode
date: label: date made
content: 1925
name: label: maker
content: General Electric Company
notes: label: Description (Brief)
content: A 4-pin plastic base with S-shaped envelope, silvered. Stamped on base: "Radiotron / UX201-A". Donor card reads: "Triode made by the General Electric Company for the Radio Corporation of America in 1925. Similar electrically in all respects to [catalog numbers 324375 and 324376] except that this UX model is mounted on the long pin base which supplanted the original "Shaw" type base. There are some internal mechanical improvements over earlier models. This model, with the UX base, was manufactured and used into the late 1950s, probably the longest run of any tube model to [the time of donation]. The UX-201-A was announced in August 1925, the UX base being then adopted as a standard for all tubes for receiving. During the summer of 1927 nickel plated base pins replaced the brass pins previously used." See also: Tyne, "Saga of the Vacuum Tube," pages 315-319; https://www.radiomuseum.org/tubes/tube_ux201a.html.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Paul G. Watson
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.324377
label: catalog number
content: 324377
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: triode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 4 1/4 in x 1 3/4 in; 10.795 cm x 4.445 cm