RCA type 1B4P vacuum pentode
name: label: maker
content: Radio Corporation of America
notes: label: Description (Brief)
content: A 4-pin plastic base with top contact, BT-shaped envelope, screen mesh grid. Stamped on base: "RCA Radiotron / Made in U.S.A. / X4 / Licensed / as stated / on carton"; on envelope: "1B4 / P". Reference: https://www.radiomuseum.org/tubes/tube_1b4p.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.323180
label: catalog number
content: 323180
label: accession number
content: 241556
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: vacuum tube
label: Object Name
content: pentode
physicalDescription: label: Measurements
content: overall: 4 1/2 in x 1 1/2 in; 11.43 cm x 3.81 cm