Raytheon type RK-47 beam power tube
date: label: date made
content: ca 1946
name: label: maker
content: Raytheon Company
notes: label: Description (Brief)
content: Double-ended transmitting pentode with 5-pin plastic base, metal top contact for plate connection. Cylindrical BT-shaped envelope, air-cooled. Donor’s card reads: “Beam power tube made by Raytheon Mfg. Co. for use primarily as a Class C radio frequency amplifier. Used by many amateurs as the output tube of low powered transmitters just after World War II. Thoriated tungsten filament: 10 volts at 3.25 amps, plate circuit: 1250; screen 300; negative grid bias 150 volts; plate dissipation 50 watts. A very fine tube but easily damaged with excessive grid drive in tuning up. Not an exact duplicate of the 814 tube but was often used interchangeably with it.” See also: https://www.radiomuseum.org/tubes/tube_rk47.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.324461
label: catalog number
content: 324461
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: pentode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 8 3/4 in x 2 in; 22.225 cm x 5.08 cm