De Forest / U. S. Navy tubular "Audion" radio tube
date: label: date made
content: 1915
label: associated date
content: 1915
name: label: associated user
content: unknown
label: associated person
content: De Forest, Lee
label: maker
content: De Forest Radio Telephone & Telegraph Co.
notes: label: Description (Brief)
content: Donor card reads: Transmitting tube made for the U. S. Navy in 1915 for use of Lieut. Comdr. S. C. Hooper. This is the first type of tube in which all connections to the tube elements are brought out to base contacts. Grid, plate, and one filament connections are made to the three bottom contacts while the second filament connection is made to the bayonet pin on the side of the base. Filament is for 5 volt operation, tungsten ribbon coated with "Hudson" tantalum paste." Three-pin plastic base with tipped T-shaped envelope.
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.324297
label: catalog number
content: 324297
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: 4 1/2 in x 1 1/4 in; 11.43 cm x 3.175 cm