Crystal radio receiver
date: label: date made
content: ca 1918
notes: label: Description (Brief)
content: No nameplate or maker's marking. A fixed inductance coil with sliding control and crystal detector. Inductance of the tuning coil is varied by a slider. Binding posts on wooden base. A .0003 mfd. by-pass capacitor offers a high reactance to radio frequency signals permitting audio frequency signals to pass through head telephones. Crystal is cat's whisker type inside a glass protector mounted on end of unit.
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.321295
label: catalog number
content: 321295
label: accession number
content: 241556
objectType: label: Object Name
content: radio receiver
physicalDescription: label: Measurements
content: overall: 5 in x 9 3/4 in x 4 3/4 in; 12.7 cm x 24.765 cm x 12.065 cm