Westinghouse type UV199 "Radiotron" triode
date: label: date made
content: ca 1925
name: label: maker
content: Westinghouse Electric Corporation
notes: label: Description (Brief)
content: A 4-pin brass base with tipless T-shaped envelope. Base stamped: "Radiotron". Donor's card reads: "Triode made for the Radio Corporation of America to replace the WD-11 and WD-12 battery operated tubes. A general purpose triode, used in all positions in radio receivers. Three volt filament, .06 amperes. 90 volts maximum on the plate, a 4.5 negative grid bias when used as an amplifier. Mounted on a small 4 button base of its own design, and which replaced the UX-199 model with the standard long pin type, then being used on tubes of all types. Made by General Electric Company. This tipless model was introduced in March 1924. Filament is thoriated tungsten. Black molded UV type base was introduced in the fall of 1924, replacing the brass shell type seen [on this tube]." See also: https://www.radiomuseum.org/tubes/tube_cx112a.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.324385
label: catalog number
content: 324385
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: 2 7/8 in x 1 1/4 in; 7.3025 cm x 3.175 cm