Raytheon type RKR72 half-wave vacuum rectifier
date: label: date made
content: ca 1943
name: label: maker
content: Raytheon Company
notes: label: Description (Brief)
content: A plastic 4-pin base with top contact, T-shaped envelope. Stamped on base: "Raytheon / RKR-72 / Made in U.S.A. / S4494-"; inked on press: "N". Reference: https://www.radiomuseum.org/tubes/tube_rkr-72.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.321174
label: catalog number
content: 321174
label: accession number
content: 241556
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: vacuum tube
label: Object Name
content: rectifier
physicalDescription: label: Measurements
content: overall: 4 7/8 in x 1 1/2 in; 12.3825 cm x 3.81 cm