National Union type XXB twin triode
name: label: maker
content: National Union Radio Corp.
notes: label: Description (Brief)
content: An 8-pin metal base with center post, T-shaped envelope. Donor’s card reads: “Twin triode made by the National Union Radio Company. Glass lock-in type used as a frequency converter in battery operated radio equipment. Filament, 1.4 volts at .1 ampere. 90 volt plate circuit.”
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.325145
label: catalog number
content: 325145
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube, Triode
label: Object Name
content: triode
label: Other Terms
content: Electron Tube, Triode; Electron Tubes
physicalDescription: label: Measurements
content: overall: 2 3/4 in x 1 1/8 in; 6.985 cm x 2.8575 cm