RCA type 204-A “Radiotron” transmitting triode
date: label: date made
content: ca 1938
name: label: maker
content: Radio Corporation of America
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 logo] Radiotron / Made in U.S.A." Donor’s card reads: “Triode made by the Radio Corporation of America. This is the second “A” model of the original UV-204 [catalog number 324352]. This second model dates from about 1938 and has a carbon plate. Can be used at full input up to 3 megacycles. Filament: 11 volts at 3.85 amperes. Class C radio frequency operation: 2000 volts at 275 milliamperes; negative control grid bias 250 volts; for an output of 350 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.324494
label: catalog number
content: 324494
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