Spark oscillator
date: label: date made
content: ca 1921
notes: label: Description (Brief)
content: Mahogany box with two coils and spark electrodes mounted on top. Hard rubber insulated rod supports. To be used with an induction coil (catalog number 323738) as a bi-polar high frequency coil. Manufacturer claimed a 12 inch spark discharge. Plate reads: "Oscillator". May be a unit made by Knott Apparatus Co., see 1921 Knott catalog, page 177.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Dunbar High School, thru Charles Lofton
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.323737
label: accession number
content: 252354
label: catalog number
content: 323737
objectType: label: Object Name
content: Transmitter
label: Object Name
content: radio transmitter
physicalDescription: label: Measurements
content: overall: 11 3/4 in x 23 1/4 in x 10 in; 29.845 cm x 59.055 cm x 25.4 cm