Duo-Vac type 811 vacuum tube
date: label: date made
content: 1931
name: label: maker
content: Duovac Radio Corp.
notes: label: Description (Brief)
content: A transmitting triode with a brass 4-pin base with ceramic insulator, tipless T-shaped envelope. Duovac Radio Corp., Brooklyn, NY. Marked: "Duovac / 811", and paper label: "Paramount Publix / Tube No. 3186 / Tested 11/28/31 / Date installed: 12/12/31". Fragment of a second paper label appears to have no markings.
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.322659
label: catalog number
content: 322659
label: accession number
content: 241556
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: vacuum tube
label: Object Name
content: triode
physicalDescription: label: Measurements
content: overall: 7 3/4 in x 2 1/4 in; 19.685 cm x 5.715 cm