Western Electric type D / 201A telephone repeater triode
date: label: date made
content: ca 1916
name: label: maker
content: Western Electric
notes: label: Description (Brief)
content: A 3-pin brass shell with plastic insulator partially removed, tipped G-shaped envelope. Base shell stamped: "Pat. in U.S.A. / 1-15-07, two patents / 2-18-08, 4-27-15 / 12-19-16 / Pat. Applied for". Envelope stamped: "28037D". Tube also known as Navy type CW-186. Reference: Tyne, "Saga of the Vacuum Tube," pages 103, 280, 344.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from the United States Bureau of Stadards
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: ZZ.RSN80508U13
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: triode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Physical Description
content: glass (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: electron tube: 2 3/4 in x 2 1/4 in; 6.985 cm x 5.715 cm