GE / RCA type UX210 "Radiotron" triode
date: label: date made
content: 1925
name: label: maker
content: General Electric Company
notes: label: Description (Brief)
content: A plastic 4-pin base with S-shaped envelope. Base stamped: "[RCA logo] / Radiotron / UX-210". Donor's card reads: "Triode made by General Electric for the Radio Corporation of America in 1925. Designed originally in the 1920s with a brass shell "Shaw" base to be an enlargement of the UV-202 of the original RCA line of tubes. ... Used as audio amplifiers and as oscillators in low power radio transmitters. When used as a Class A amplifier, 425 volts on the plate, a 39 volt negative control grid bias, gave an output of 1.6 watts. When used in transmitters, as much as 12 watts of radio frequency power was obtained from one tube, and with as many as four in parellel, 50 watts could be obtained. Carbonized thoriated tungsten filament: 7.5 volts at 1.25 amperes." See also: https://www.radiomuseum.org/tubes/tube_ux210.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.324408
label: catalog number
content: 324408
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube, Triode
label: Object Name
content: triode
label: Other Terms
content: Electron Tube, Triode; Electron Tubes
physicalDescription: label: Measurements
content: overall: 5 1/4 in x 2 1/8 in; 13.335 cm x 5.3975 cm