RCA type 12SA7 "Radiotron" pentagrid converter
date: label: date made
content: ca 1940
name: label: maker
content: Radio Corporation of America
notes: label: Description (Brief)
content: An 8-pin plastic base with center post, metal T-shaped envelope. Stamped on envelope: “RCA / Radiotron / Made in U.S.A. / 12SA7.” Donor’s card reads: “Pentagrid converter made by the Radio Corporation of America for use in superheterodyne type radio receivers. Metal case, heater type, 6.3 volts at .3 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.324566
label: catalog number
content: 324566
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: vacuum tube
label: Object Name
content: heptode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 2 1/2 in x 1 1/4 in; 6.35 cm x 3.175 cm