De Forest tubular Audion radio tube
date: label: date made
content: ca 1917
name: label: maker
content: De Forest Radio Telephone & Telegraph Co.
notes: label: Description (Brief)
content: De Forest tubular "Audion" radio tube. "DF" stamped on collector, clear tubular envelope, end-tipped, 2 leads emerge from each end, cloth insulation. Reference: Tyne, "Saga of the Vacuum Tube," pages 119-122.
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.320903
label: catalog number
content: 320903
label: accession number
content: 241556
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: triode
physicalDescription: label: Measurements
content: tube only: 3 1/2 in x 7/8 in; 8.89 cm x 2.2225 cm
label: Measurements
content: overall with leads: 4 in x 7/8 in x 2 in; 10.16 cm x 2.2225 cm x 5.08 cm