Cunningham type C299 triode with Frost type 611 adapter
date: label: date made
content: ca 1924
name: label: maker
content: E. T. Cunningham, Inc.
notes: label: Description (Brief)
content: A 4-pin plastic base, short pins, tipless T-shaped envelope, silvered. Stamped on base: "Cunningham / C299 / Licensed only to extent indicated on carton". "C" logo stamped on envelope. Set in a Frost Radio type 611 socket adapter. Push and turn to remove. Reference: https://www.radiomuseum.org/tubes/tube_c299.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 McMurdo Silver Corp., thru McMurdo Silver
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.311569
label: catalog number
content: 311569
label: accession number
content: 146541
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: tube only: 3 1/4 in x 1 in; 8.255 cm x 2.54 cm
label: Measurements
content: socket only: 1 3/4 in x 1 1/2 in; 4.445 cm x 3.81 cm
label: Measurements
content: overall: 4 in x 1 1/2 in; 10.16 cm x 3.81 cm