Daven type MU20 vacuum triode in original box
date: label: date made
content: 1928
name: label: maker
content: Daven Radio Co.
notes: label: Description (Brief)
content: A 4-pin plastic base with silvered, S-shaped envelope. In original box with specification sheet dated 1928. Base stamped: "NMC" and "Daven Amplifier / Type MU 20 / Fil. Volts 6 Fil. Amp. 1/4". Reference: https://www.radiomuseum.org/tubes/tube_muA 4-pin plastic base with long pins, silvered S-shaped envelope. In original box with specification sheet dated 1928. Base stamped: "NMC" and "Daven Amplifier / Type MU 20 / Fil. Volts 6 Fil. Amp. 1/4". Reference: https://www.radiomuseum.org/tubes/tube_mu20.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 Franklin Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.323014
label: catalog number
content: 323014
label: accession number
content: 241556
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: triode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Physical Description
content: cardboard (box material)
label: Measurements
content: tube: 4 1/2 in x 1 3/4 in; 11.43 cm x 4.445 cm
label: Measurements
content: box: 5 in x 2 5/8 in x 2 1/2 in; 12.7 cm x 6.6675 cm x 6.35 cm