RCA type 849 triode (intermediate type)
date: label: date made
content: ca 1936
name: label: maker
content: General Electric Company
notes: label: Description (Brief)
content: Double-ended transmitting triode with metal shell base, pin-and-blade contacts, thoriated-tungsten filament, and metal top contact for the plate. Cylindrical BT-shaped envelope, air-cooled. Marked on base shell: "RCA". Donor’s card reads: “Triode made by the General Electric Company for the Radio Corporation of America about 1936. Chronologically, this is the second model of the three 849 tubes in [the Watson] collection. The earliest model is [catalog number 324450] and the latest is [catalog number 324459], and this is the second model with a metal plate. Designed primarily for use as a Class A and Class B audio amplifier or modulator, it can also be used in radio frequency applications up to 3 megacycles. Filament: 11 volts at 5 amperes.” See also: https://www.radiomuseum.org/tubes/tube_849.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.324460
label: catalog number
content: 324460
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube, Triode
label: Object Name
content: triode
label: Other Terms
content: Electron Tube, Triode; Electron Tubes
physicalDescription: label: Measurements
content: overall: 14 in x 4 in; 35.56 cm x 10.16 cm