RCA UV204 "Radiotron" transmitting triode
date: label: date made
content: ca 1923
name: label: maker
content: Radio Corporation of America
notes: label: Description (Brief)
content: A large transmitting triode, metal shell base with 2-pins and blade, top cap contact, spherical 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. For it's time, this was a large tube, generally giving satisfactory performance as an oscillator, or a modulator in the Hartley-Heising circuits of the 1920s as used in many composite AM broadcast transmitters. Also used in larger amateur transmitters. Two tubes, in parallel, were often used for increased transmitting power. Derived from the earlier GE "P" tube. Filament: 11 volts at 14.75 amperes. Plate circuit: 2000 volts at 250 milliamperes. Amplification factor 25. Normal output: 250 watts. Cost in 1922 was $110.00." There were two versions of this tube made, one with a spherical glass envelope, and one with a cylindrical envelope. See also: https://www.radiomuseum.org/tubes/tube_uv204.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.324354
label: catalog number
content: 324354
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: 14 in x 4 1/2 in; 35.56 cm x 11.43 cm