Western Electric type 245A screen grid tetrode
date: label: date made
content: ca 1927
name: label: maker
content: Western Electric
notes: label: Description (Brief)
content: A 5-pin base with top contact, screen grid, S-shaped envelope. Markings: "Western Electric / Made in U.S.A. / 245-A"; "WEAK" scratched into base. "Applications: Carrier-frequency and radio-frequency voltage amplifier, detector, and audio-frequency voltage amplifier." Reference: https://www.westernelectric.com/s/245A.pdf.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from the United States Bureau of Standards, Dept. of Commerce
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.320179
label: catalog number
content: 320179
label: accession number
content: 188571
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: vacuum tube
label: Object Name
content: tetrode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 4 7/8 in x 1 3/4 in; 12.3825 cm x 4.445 cm