Raytheon type 2-J-49 cavity magnetron
date: label: date made
content: ca 1943
name: label: maker
content: Raytheon Manufacturing Company
notes: label: Description (Brief)
content: A glass tube attached to a metal assembly. A metal tube with wave guide is attached perpendicular to the tube. Stamped: "2J49 / Z7833".. Donor’s card reads: “Cavity magnetron made by the Raytheon Mfg. Co. for US government use during World War II. Fixed frequency type for pulsed service, 9000 to 9160 megacycles. Heater 6.3 volts at 1 ampere. Typical operation: .0012 duty cycle, input 180 watts, 5400 field gauss, 1 microsecond pulse, 1000 pulses per second, for an output of 58 kw peak pulsed power.” See also: https://www.radiomuseum.org/tubes/tube_2j49.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.325219
label: catalog number
content: 325219
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: magnetron
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 6 in x 5 1/4 in x 3 1/4 in; 15.24 cm x 13.335 cm x 8.255 cm