General Electric / RCA type 865 power tetrode
date: label: date made
content: ca 1930
name: label: maker
content: General Electric Company
notes: label: Description (Brief)
content: A plastic 4-pin base, top contact, domed envelope. Stamped: "[RCA logo] 865". Donor’s card reads: “Power tetrode made by the General Electric Company for the Radio Corporation of America beginning in March 1929. Used as a radio frequency amplifier and oscillator. May be used at full input up to 15 megacycles. Thoriated tungsten filament: 7.5 volts at 2 amperes. Class C telephony; plate circuit 750 volts maximum; screen 175 volts; negative control grid bias 200 volts; plate dissipation 15 watts.”
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.324466
label: catalog number
content: 324466
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: vacuum tube
label: Object Name
content: tetrode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 5 3/4 in x 2 in; 14.605 cm x 5.08 cm