CECO type 224 screen-grid tetrode
date: label: date made
content: ca 1929
name: label: maker
content: C. E. Manufacturing Co.
notes: label: Description (Brief)
content: A 5-pin plastic base with top contact, screen mesh grid, S-shaped envelope, getter stain. Molded on base: "Ce Co /4.0 / 224". Paper label reads: "This tube tested by / Beardsley Specialty Co. / Rock Island, Ill. / File / No. 2 1/2 Fair". Reference: https://www.radiomuseum.org/tubes/tube_224.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.241556.803
label: accession number
content: 241556
label: catalog number
content: 241556.803
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: tetrode
label: Other Terms
content: Electron Tube; 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: overall: 4 7/8 in x 1 3/4 in; 12.3825 cm x 4.445 cm
label: Measurements
content: overall: 4 1/2 in x 5/8 in; 11.43 cm x 1.5875 cm