Electro-Voice model 727SR microphone
date: label: date made
content: ca 1965
name: label: maker
content: Electro-Voice, Inc.
notes: label: Description (Brief)
content: A desk-top microphone for amateur radio and low-end professional use. 86" cord with plug connector on end. Similar to catalog #2020.0037.34 but has an on-off leaf switch on front. "Model 727 SR Ceramic / Electro-Voice Inc. / Buchanan, Mich. / Made in U.S.A."
label: Description (Brief)
content: Microphones convert sound waves into electrical signals, and are a critical part of telephone, radio, and television devices. Many types of microphones have been invented since Alexander Graham Bell demonstrated his telephone in 1876. They work on different principles, contain any number of materials, and show a variety of user interfaces. This unit includes a ceramic element and, according to the owner’s guide is an: “omnidirectional type designed for public address, call and paging systems, dictating machines, home recorders, radio amateurs, and general communication.”
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2022.0278.07
label: accession number
content: 2022.0278
label: catalog number
content: 2022.0278.07
objectType: label: Object Name
content: microphone
physicalDescription: label: Measurements
content: overall: 8 in x 1 1/2 in x 1 1/2 in; 20.32 cm x 3.81 cm x 3.81 cm