rectifier tube from KDKA
date: label: date made
content: ca 1925
notes: label: Description (Brief)
content: A rectifier tube for converting alternating to direct current, used at radio station KDKA. Remnant of a paper label, no legible markings remain. "38" inked on stem press. Two stranded copper leads emerge from one end, one stranded copper lead emerges from the other. Tubular glass envelope with G-shaped bulge near the center and exhaust tip on one end. No extant maker's markings on envelope. Presumed to be a Westinghouse tube, if used at KDKA.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Franklin Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.323038
label: accession number
content: 241556
label: catalog number
content: 323038
objectType: label: Object Name
content: rectifier
physicalDescription: label: Measurements
content: overall w/o leads: 12 in x 5 1/2 in; 30.48 cm x 13.97 cm