EIMAC type VT127A radar tube
date: label: date made
content: ca 1943
name: label: maker
content: Eimac
notes: label: Description (Brief)
content: Cylindrical glass envelope with bulge toward the top. No base. Two contacts on the bottom. two on either side – one above and one below the bulge. Uranium glass used in the bottom stem. Donor card reads: "Triode made by the Eitel-McCullough of San Carlos, Calif. Used mostly as Class C radio frequency amplifiers in amateur transmitters right after World War I/I Dates from about 1938. Filament: 5 volts at 10.4 amperes. In Class Corporation, plate circuit 2000 volts at 210 mA; 340 volt negative control grid bias for an output of about 300 watts. Mechanically weak, depending on connections for support, seals easily broken by heat expansion, this tube was widely used because of the price-power ratio."
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.324479
label: catalog number
content: 324479
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube, Triode
label: Object Name
content: triode
label: Object Name
content: radar tube
label: Other Terms
content: Electron Tube, Triode; Electron Tubes
physicalDescription: label: Measurements
content: overall: 5 1/4 in x 4 in x 3 in; 13.335 cm x 10.16 cm x 7.62 cm