De Forest type HR "Oscillion" transmitting triode
date: label: date made
content: ca 1916
name: label: maker
content: De Forest Radio Telephone & Telegraph Co.
notes: label: Description (Brief)
content: An early De Forest type HR "Oscillion" transmitting triode. Dual plates, single v-type filament with a spring support. Marked: "De Forest". Reference: Tyne, "Saga of the Vacuum Tube," pages 301-304.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Franklin Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.322658
label: catalog number
content: 322658
label: accession number
content: 241556
objectType: label: Object Name
content: vacuum tube
label: Object Name
content: triode
physicalDescription: label: Measurements
content: overall: 6 1/4 in x 3 1/2 in x 2 1/4 in; 15.875 cm x 8.89 cm x 5.715 cm