General Electric / Cunningham type C301A vacuum triode
date: label: date made
content: ca 1930
name: label: maker
content: E. T. Cunningham, Inc.
notes: label: Description (Brief)
content: A 4-pin brass base with ceramic insulator, .75" grid shield, tipless S-shaped envelope. Stamped on base: "Cunningham / Amplifier / type C-301-A / Patented / Licensed only for / amateur, experimental / and entertainment use / and only to extent / indicated on carton". Paper label: "C" and General Electric logo on envelope. Reference: https://www.radiomuseum.org/tubes/tube_c301a.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.RSN80616U84
objectType: label: Object Name
content: Electron Tube, Triode
label: Object Name
content: triode
label: Other Terms
content: Electron Tube, Triode; 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: 4 in x 1 5/8 in; 10.16 cm x 4.1275 cm