GEM type X201A vacuum triode
date: label: date made
content: ca 1926
notes: label: Description (Brief)
content: A 4-pin plastic base with tipless S-shaped envelope, silvered. Label reads: "GEM / [sun logo]", stamped on base: ":-X201A-:". Not to be confused with General Electric's GEM incandescent lamp of the 1900s and 1910s. Although this company made have been making use of that (by 1926) defunct brand name. Made by GEM Tube Co., New York City. Reference: Tyne, "Saga of the Vacuum Tube," 355-356.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: ZZ.RSN80601U07
objectType: label: Object Name
content: Electron Tube, Triode
label: Object Name
content: triode
label: Other Terms
content: Electron Tube, Triode; Electron Tubes
physicalDescription: label: Physical Description
content: composition (overall material)
label: Physical Description
content: glass (overall material)
label: Physical Description
content: metal (overall material)
label: Measurements
content: tube: 4 1/2 in x 1 3/4 in; 11.43 cm x 4.445 cm