General Electric type UX171A triode
date: label: date made
content: 1926
name: label: maker
content: General Electric Company
notes: label: Description (Brief)
content: A 4-pin plastic base with S-shaped envelope, mostly silvered. Stamped on base: "RCA / Radiotron / UX-171-A.". Paper label reads: "For use in / last audio / stage only". Donor card reads: "Triode made for the Radio Corporation of America by the General Electric Company in 1926 as a revision of the UX-171. Similar in every respect [to catalog number 324380] except the filament current was reduced from .5 to .25 ampere. This was the first "A" type, in the original glass envelope. Filament was changed from thoriated tungsten to oxide coated in the late fall of 1926." See also:Tyne, "Saga of the Vacuum Tube," pages 315-316; https://www.radiomuseum.org/tubes/tube_ux171a.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.324381
label: catalog number
content: 324381
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: Electron Tube
label: Object Name
content: triode
label: Other Terms
content: Electron Tube; Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 4 3/8 in x 1 3/4 in; 11.1125 cm x 4.445 cm