Federal Telegraph type F363A transmitting triode
date: label: date made
content: 1937
name: label: maker
content: Federal Telephone & Telegraph Co.
notes: label: Description (Brief)
content: A transmitting triode with large heat-sink, two stranded copper leads with ceramic-bead insulators, exhaust tube opens thru the side of the stem as with the Jaeger type of lamp tubulation. Side mounted contact. Marked on top ring: "Thermionic Vacuum Tube / Type F-363-A / Federal Telegraph Company / [F.T.Co. logo] / Patent Nos. 19408470 / 1974305 / 14060"; stamped on lead-strap: "14060"; paper label: "#14060 / tested 2K[?} / 12/15/37 / [initials]"; second paper label: "in SVC / Apr. 17th 1938".
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.323042
label: catalog number
content: 323042
label: accession number
content: 241556
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: 19 3/4 in x 7 in x 4 in; 50.165 cm x 17.78 cm x 10.16 cm