type UY224 screen-grid tetrode
date: label: date made
content: ca 1930
name: label: maker
content: Radio Corporation of America
notes: label: Description (Brief)
content: A plastic 5-pin base with top contact, S-shaped envelope. Donor's card reads: "Screen grid tube made for the Radio Corporation of America for use as a radio frequency amplifier in well shielded circuits especially designed for it. Used in receivers operated from an AC source of power. The first model of such tubes became available in quantities for general use in 1929 (20 April 1929). Heater type: 2.5 volts at 1.75 amperes. 180 volts on the plate, 90 volts on the screen, 3 volt negative control grid bias, amplification factor 400. An excellent tube of its type" See also: https://www.radiomuseum.org/tubes/tube_uy224.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.324402
label: catalog number
content: 324402
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube, Tetrode
label: Object Name
content: tetrode
label: Other Terms
content: Electron Tube, Triode; Electron Tubes
physicalDescription: label: Measurements
content: overall: 5 in x 1 3/4 in; 12.7 cm x 4.445 cm