GE / Cunningham type C302 transmitting triode
date: label: date made
content: ca 1922
name: label: maker
content: E. T. Cunningham, Inc.
label: maker
content: General Electric Company
notes: label: Description (Brief)
content: An air-cooled transmitting triode with a 4-pin base with brass shell, ceramic insulator, tipped S-shaped envelope. Stamped on base: "Cunningham / Transmitter / model C-302 / Patented / Licensed for amateur or / experimental use only."; on envelope: C logo and GE logo. Reference: Tyne, "Saga of the Vacuum Tube," page 164; https://www.radiomuseum.org/tubes/tube_c302.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 Franklin Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.323101
label: catalog number
content: 323101
label: accession number
content: 241556
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: 5 in x 2 1/8 in; 12.7 cm x 5.3975 cm