GE type UV201 "Radiotron" triode
date: label: date made
content: 1922
name: label: maker
content: General Electric Company
notes: label: Description (Brief)
content: A 4-pin brass base with tipped S-shaped envelope. Donor card reads: "Triode, made for the Radio Corporation of America and listed in their first catalog of tubes, dated 1 June 1922. A part of their original line of tubes. Known as a Radiotron, this was a "hard" (high vacuum) tube for use as an audio amplifier. Generally a poor detector, it was a fair oscillator and was sometimes used by amateurs in low powered transmitters. This and the UV-202 were the first tubes to make loud speaker reception of broadcast music generally possible. While Western Electric surplus tubes from World War 1 were available in some areas before these RCA tubes, RCA tubes carried the bulk of the work in introducing loud speakers. Filament: 5 volts at 1 ampere, plate varied from 90 to 135 volts. Cost: $6.50 each in 1922. Made by General Electric Company. Plate is made of nickel, molybdenum grid wire, pure tungsten filament. First models of the UV-200 and UV-201 were exactly alike except that the UV-200 had 50 microns of argon gas in the envelope, whereas the UV-201 was a straight vacuum tube. Available in 1920." See also: https://www.radiomuseum.org/tubes/tube_uv201.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.324356
label: catalog number
content: 324356
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 1/2 in x 1 3/4 in; 11.43 cm x 4.445 cm