Western Electric type 239A triode
date: label: date made
content: ca 1928
name: label: maker
content: Western Electric
notes: label: Description (Brief)
content: Western Electric type 239A tube. Plastic base with four-pins, with tipless T-shaped envelope. Stamped on base: "Western Electric / Made in U.S.A. / 239-A" Tyne reports this as a modification of the 215A peanut tube introduced in 1927. Reference: Tyne, "Saga of the Vacuum Tube," pages 295-296.
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.321115
label: catalog number
content: 321115
label: accession number
content: 241556
objectType: label: Object Name
content: triode
label: Object Name
content: vacuum tube
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 3 3/4 in x 1 1/8 in; 9.525 cm x 2.8575 cm