Western Electric type 408A pentode
date: label: date made
content: 1948
name: label: maker
content: Western Electric
notes: label: Description (Brief)
content: A 7-pin glass base with tipped T-shaped envelope. Miniature tube. Stamped: "Western / Electric / 408A / Made in U.S.A. / 5893". Donor’s card reads: “Pentode made by the Western Electric Company in 1948 for use as an amplifier in high and ultra-high frequency circuits. Also suitable for use in audio frequency circuits where exceptionally low microphonic noise is not a requirement. Similar to the type 6028 tube. Heater type: 20 volts at .05 ampere. Plate and screen 120 volts.” See also: https://www.radiomuseum.org/tubes/tube_408a.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.324872
label: catalog number
content: 324872
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: pentode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 1 3/4 in x 5/8 in; 4.445 cm x 1.5875 cm