Raytheon type BH full-wave cold-cathode rectifier
date: label: date made
content: ca 1926
name: label: maker
content: Raytheon Manufacturing Co.
notes: label: Description (Brief)
content: A 4-pin plastic base with S-shaped envelope. Two cylindrical electrodes mounted side-by-side under a metal cap. Stamped on base: "Raytheon / B-H". Paper testing label indicates warranty expired, National Carbon Co. label. Unit in original box. Reference: https://www.radiomuseum.org/tubes/tube_bh.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.322903
label: catalog number
content: 322903
label: accession number
content: 241556
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: rectifier
physicalDescription: label: Measurements
content: overall: 4 1/8 in x 1 3/4 in; 10.4775 cm x 4.445 cm