RCA type 203A transmitting triode (second version)
date: label: date made
content: ca 1924
name: label: maker
content: Radio Corporation of America
notes: label: Description (Brief)
content: Air-cooled transmitting triode. A 4-pin (short) aluminum shell base with ceramic insulator, T-shaped envelope. Donor’s card reads: “Triode made by the Radio Corporation of America. Derived from the original UV-203 design [catalog number 324354], this tube is the second “A” model. The first “A” model revision [catalog number 324553] still has a metal plate with heat radiators or stiffeners, while the second version has a carbon plate. Oxide coated filament: 10 volts on 3.2 amperes. For Class C amplifier service: 1000 volts at 150 milliamperes on the plate, 135 volt negative grid control bias, this tube will give about 100 watts output up to 15 megacycles. This tube was replaced by the type 8005.” See also: https://www.radiomuseum.org/tubes/tube_203a.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.324511
label: catalog number
content: 324511
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: 7 1/4 in x 2 1/4 in; 18.415 cm x 5.715 cm