Cunningham type C302 detector triode
date: label: date made
content: ca 1922
name: label: maker
content: E. T. Cunningham, Inc.
notes: label: Description (Brief)
content: A 4-pin base with brass shell, ceramic insulator, tipped S-shaped envelope. Stamped on base: "Cunningham / Detector / model C-302 / Patented / Licensed for amateur or / experimental use only."; on envelope: C 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
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: ZZ.RSN79819U19
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: triode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Physical Description
content: glass (overall material)
label: Physical Description
content: isolantite (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: overall: 5 in x 2 in; 12.7 cm x 5.08 cm