type 3Q4 vacuum pentode
date: label: date made
content: ca 1941
notes: label: Description (Brief)
content: A glass electron tube set in a plastic base (adapter?), tipped T-shaped envelope. "3Q4" stamped on envelope, but no maker's stamp. Base has 7 contact tabs surrounding a metal center post. Reference: https://www.radiomuseum.org/tubes/tube_3q4.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 Hallam E. Mendenhall
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1988.0695.20
label: catalog number
content: 1988.0695.20
label: accession number
content: 1988.0695
objectType: label: Object Name
content: pentode
physicalDescription: label: Physical Description
content: manufactured (overall style)
label: Physical Description
content: molded (overall production method/technique)
label: Measurements
content: overall: 2 1/2 in x 1 1/4 in; 6.35 cm x 3.175 cm