Sears type 1-A-4 “Silvertone” remote cutoff pentode
date: label: date made
content: ca 1932
notes: label: Description (Brief)
content: A 4-pin plastic base with top contact, domed envelope. Stamped on base: “Silvertone / 5BX”, on envelope: “1A4” Donor’s card reads: “Remote cutoff pentode, glass type, sold in early 1930s by Sears, Roebuck & Co. in their “Silvertone” line of radio receivers. Used as a radio frequency or an intermediate frequency amplifier in battery operated radio receivers. Filament: 2 volts at .06 ampere.”
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Paul G. Watson
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.324593
label: catalog number
content: 324593
label: accession number
content: 252994
objectType: label: Object Name
content: Electron 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