RCA type 231 "Radiotron" vacuum triode
date: label: date made
content: ca 1930
name: label: maker
content: RCA Corporation
notes: label: Description (Brief)
content: A 4-pin base with tipless, T-shaped envelope. Markings: "RCA / Radiotron / 231"; stamped on envelope: RCA logo." Reference: https://www.radiomuseum.org/tubes/tube_231.html; and Tyne, "Saga of the Vacuum Tube," pages 329-330.
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.RSN80552U30
objectType: label: Object Name
content: triode
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: electron tube: 10 cm x 3 cm; 3 15/16 in x 1 3/16 in
label: Measurements
content: overall: 4 in x 1 1/8 in; 10.16 cm x 2.8575 cm