Ken-Rad type 25Z4 half-wave vacuum rectifier
date: label: date made
content: ca 1939
name: label: maker
content: Ken-Rad Tube and Lamp Corporation
notes: label: Description (Brief)
content: A 6-pin plastic base with center post, metal T-shaped envelope. Stamped: "Ken-Rad / Made in U.S.A. / 25Z4". Reference: https://www.radiomuseum.org/tubes/tube_25z4.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 Susan Horle
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.313957
label: catalog number
content: 313957
label: accession number
content: 195337
objectType: label: Object Name
content: Electron Tube, Diode
label: Object Name
content: diode
label: Other Terms
content: Electron Tube, Diode; Electron Tubes
physicalDescription: label: Measurements
content: overall: 2 1/2 in x 1 1/4 in; 6.35 cm x 3.175 cm