Raytheon type RKR72 half-wave vacuum rectifier
date: label: date made
content: ca 1943
name: label: maker
content: Raytheon Manufacturing Co.
notes: label: Description (Brief)
content: A plastic 4-pin base with top contact, T-shaped envelope. Stamped on base: "[?]2262". Donor’s card reads: “Half-wave vacuum rectifier made by Raytheon for the US government during World War II. Used principally to supply anode voltage to cathode ray tubes used in radar equipment. Filament 2.5 volts at 3 amperes. Similar in many respects to the type CRP-72 tube (catalog number 325209." See also: 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 Paul G. Watson
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.325210
label: catalog number
content: 325210
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube, Diode
label: Object Name
content: rectifier
label: Other Terms
content: Electron Tube, Diode; Electron Tubes
physicalDescription: label: Measurements
content: overall: 4 7/8 in x 1 1/2 in; 12.3825 cm x 3.81 cm