Marconi type V24 vacuum triode
date: label: date made
content: ca 1918
name: label: maker
content: Marconi Wireless Telegraph Co. Ltd.
notes: label: Description (Brief)
content: Four metal contacts, one at each end (filament) and one on each side (plate and grid). Cylindrical plate, helical wire grid, straight single wire filament. Tipped T-shaped envelope. Envelope stamped: "Marconi Valve / Patented / Made in England / D.E.Q. / [BBC logo] / Z 640 [??]". Green band coated on the outside of the envelope at center. Reference: Tyne, "Saga of the Vacuum tube," 223-224. See also: https://www.radiomuseum.org/tubes/tube_v24.html.
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.321049
label: catalog number
content: 321049
label: accession number
content: 241556
objectType: label: Object Name
content: vacuum tube
label: Object Name
content: triode
physicalDescription: label: Measurements
content: overall: 3 in x 1 in x 5/8 in; 7.62 cm x 2.54 cm x 1.5875 cm