National Union type 6SR7 twin-diode medium-Mu triode
date: label: date made
content: ca 1940
name: label: maker
content: National Union Radio Corp.
notes: label: Description (Brief)
content: An 8-pin plastic base with center post, T-shaped metal envelope. Envelope stamped: “6SR7”. Donor’s card reads: “Twin-diode medium-Mu triode made by the National Union Radio Company. Metal type used as a detector, amplifier and AVC tube in radio receivers. Heater: 6.3 volts at .3 ampere.” See also: https://www.radiomuseum.org/tubes/tube_6sr7.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.325140
label: catalog number
content: 325140
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: triode
label: Object Name
content: dual diode
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