Section of crystal radio receiver
date: label: date made
content: c 1915
label: date made
content: ca 1915
name: label: maker
content: Marconi
label: maker
content: Marconi Wireless Telegraph Co. Ltd.
notes: label: Description (Brief)
content: No extant maker's marking. Crystal detector receiver with detector element in glass housing and adjustable cat's whisker. Dial markings on unit are partially obliterated, but the wavelength range appears to be divided into three sections (A, B, and C) between about 150 and 2600 meters. The variable capacitor has a slide rule type swinging pointer on the front end of the shaft, and at the rear a slip-ring brush arrangement whereby rotor and stator connections can be made to fixed metal sections between the rear condenser insulator and the front hard rubber panel. Believed to be a panel section only from a circa 1915 Marconi crystal detector.
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.321569
label: catalog number
content: 321569
label: accession number
content: 241556
objectType: label: Object Name
content: Section of crystal radio receiver
label: Object Name
content: radio receiver
label: Object Name
content: crystal radio
physicalDescription: label: Measurements
content: overall: 9 in x 7 1/2 in x 6 1/2 in; 22.86 cm x 19.05 cm x 16.51 cm