Dual crystal radio receiver
date: label: date made
content: ca 1915
notes: label: Description (Brief)
content: No extant maker's markings. A crystal radio detector with dual elements. Components are mounted on a marble base. Though unmarked, unit seems commercial in appearance. Two tuners may be connected and operated simultaneously by using a common binding post and two distant posts for external circuit connections. Knobs turn spring adjusters which vary pressure of a pin against the crystal element. Marble base with plastic handles.
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.321769
label: catalog number
content: 321769
label: accession number
content: 241556
objectType: label: Object Name
content: radio receiver
label: Object Name
content: crystal radio
physicalDescription: label: Measurements
content: overall: 3 1/4 in x 5 3/4 in x 4 in; 8.255 cm x 14.605 cm x 10.16 cm