RCA type 247 "Radiotron" vacuum pentode
date: label: date made
content: ca 1935
name: label: maker
content: Radio Corporation of America
notes: label: Description (Brief)
content: A 5-pin plastic base with S-shaped envelope. Stamped on base: "RCA Radiotron / 247"; RCA logo stamped on top of envelope. Reference: https://www.radiomuseum.org/tubes/tube_247.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.322977
label: catalog number
content: 322977
label: accession number
content: 241556
objectType: label: Object Name
content: pentode
label: Object Name
content: vacuum tube
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 5 3/8 in x 2 1/8 in; 13.6525 cm x 5.3975 cm