Cunningham type CX299 triode
date: label: date made
content: ca 1926
name: label: maker
content: E. T. Cunningham, Inc.
notes: label: Description (Brief)
content: A 4-pin plastic base, long pins, tipless T-shaped envelope, silvered. Stamped on base: "[C logo] Cunningham / -CX-299- / Licensed only to extent indicated on carton". "C" logo stamped on envelope. A paper label reads: "This tube tested / before shipment / Sieg Co. / Date [faded] / Do not remove sticker". Reference: https://www.radiomuseum.org/tubes/tube_cx299.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 F. Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: ZZ.RSN80615U15
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: composition (overall material)
label: Physical Description
content: glass (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: electron tube, triode: 3 1/2 in x 1 1/8 in; 8.89 cm x 2.8575 cm