Emerson type 12SA7 pentagrid converter
date: label: date made
content: ca 1940
name: label: maker
content: Emerson Radio Corporation
notes: label: Description (Brief)
content: An 8-pin plastic base with central post, mica supports, mesh grid, T-shaped metal envelope. Printed on envelope: "12SA7”. Donor’s card reads: “Pentagrid converter for use in Emerson radio receivers. Metal type used as a converter in AC/DC superheterodyne receivers. Similar to the metal type 6-SA-7 [catalog number 324566] and to the type 6-SA-7-GTG [catalog number 325057]. Heater: 12.6 volts at .15 amperes.” See also: https://www.radiomuseum.org/tubes/tube_12sa7.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 Paul G. Watson
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.325064
label: catalog number
content: 325064
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: vacuum tube
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