General Electric type 28-D-7 dual triode
name: label: maker
content: General Electric Company
notes: label: Description (Brief)
content: An 8-pin metal base with center post, T-shaped envelope. Stamped: “[GE logo] Electronic / Tube / Made in U.S.A.” Donor’s card reads: “Dual triode made by the General Electric Company for use in the audio output stage of aircraft radio. Lockin type. Used with a 28 volt heater circuit and a 28 volt plate circuit.” See also: https://www.radiomuseum.org/tubes/tube_28d7.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.325291
label: catalog number
content: 325291
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: 3 in x 1 1/4 in; 7.62 cm x 3.175 cm