National Union type 1-R-4 / 1294 UHF diode
name: label: maker
content: National Union Radio Corp.
notes: label: Description (Brief)
content: A 5-pin metal base with center post, T-shaped envelope. Stamped: “National / Union”. Donor’s card reads: “UHF diode made by National Union Radio Corporation, Orange, N.J. Glass lock-in type used as a half wave rectifier. Filament type: 1.4 volts at .15 ampere. Plate capacity: 30 volts at 340 milliamps.” See also: https://www.radiomuseum.org/tubes/tube_1r4.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.325296
label: catalog number
content: 325296
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube, Diode
label: Object Name
content: diode
label: Other Terms
content: Electron Tube, Diode; Electron Tubes
physicalDescription: label: Measurements
content: overall: 2 3/4 in x 1 1/4 in; 6.985 cm x 3.175 cm