M-O Valve type KT-66 beam power tube
name: label: maker
content: Marconi-Osram Valve Co., Ltd.
notes: label: Description (Brief)
content: A 7-pin plastic base with center post, BT-shaped envelope. Stamped: “KT66 / PB 4”. Donor’s card reads: “Beam power tube made by M-O Valve Company of England for the General Electric Company Ltd., of England under the trade name “Genalex”. For Class A amplifier in the output stage of low powered audio amplifiers and radio receivers. Heater type: 6.3 volts at 1.27 amperes. For Class A operation: 250 volts at 85 milliamperes in the plate circuit, 250 volts on the screen, 15 volts negative grid bias, for an output of 7.25 watts.” See also: https://www.radiomuseum.org/tubes/tube_kt66.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.324512
label: catalog number
content: 324512
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: electron tube
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 4 3/4 in x 2 in; 12.065 cm x 5.08 cm