Western Electric type 417-A triode
date: label: date made
content: ca 1958
name: label: maker
content: Western Electric
notes: label: Description (Brief)
content: A 9-pin glass base with T-shaped envelope, top tipped. Stamped: “Western Electric”. Donor’s card reads: “Triode made by the Western Electric Company about 1958 for use as a VHF amplifier in Bell Telephone Company circuits. While not sold to the general public, it has been found that this tube when used as an input tube in VHF radio receivers gives a very much better signal to noise ratio that any other tube up to this time (1960). Heater: 6.3 volts, plate not to exceed 20 milliamperes.
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.325046
label: catalog number
content: 325046
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: 1 5/8 in x 1 in; 4.1275 cm x 2.54 cm