RCA type 813 beam power tube
date: label: date made
content: ca 1940
name: label: maker
content: Radio Corporation of America
notes: label: Description (Brief)
content: Double-ended transmitting tube with 7-pin metal shell base, metal top contact for the plate. Cylindrical BT-shaped envelope, stamped "813". Donor’s card reads: “Triode made by the Radio Corporation of America primarily for us in radio transmitters. Designed around 1934 with a metal plate, this particular tube dates from around 1940 and has a carbon plate. Thoriated tungsten filament: 10 volts at 5 amperes. Operation as a Class C plate modulated radio frequency amplifier; plate circuit: 2000 volts; screen 400 volts; negative control grid bias 175 volts; plate dissipation 100 watts. A very fine tube, widely used both in commercial and amateur transmitters.” See also: https://www.radiomuseum.org/tubes/tube_813.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.324463
label: catalog number
content: 324463
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: triode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 7 1/2 in x 2 1/2 in; 19.05 cm x 6.35 cm