General Electric type UV200 "Radiotron" triode
date: label: date made
content: ca 1924
name: label: maker
content: General Electric Company
notes: label: Description (Brief)
content: General Electric Radiotron UV-200 triode, brass 4-pin base with tipless glass envelope. Donor card reads: "Made for the Radio Corporation of America in the 1920s for use as a "soft" detector in battery operated receivers. A later model than [catalog number 324355]. This tube is marked with a red powder inside the envelope, something incidental to its manufacture. Not a very satisfactory tube as compared to others of its type and period, noisy and unstable in regeneration. Five volt tungsten filament, 1 ampere; requires a variable "B" battery voltage, from 18 to 30 volts for best results."
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.324370
label: catalog number
content: 324370
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: 4 in x 1 3/4 in; 10.16 cm x 4.445 cm