Sears Roebuck "Meteor" loose radio frequency coupler
date: label: date made
content: ca 1916
name: label: maker
content: Sears, Roebuck and Co.
notes: label: Description (Brief)
content: Marked: "Licensed Under Marconi Patent 73677. / This apparatus is only licensed to be used in a duly licensed wireless set which is used experimentally for purposes of study or instruction, and for no other purpose." A variable inductance tuning coil or "loose coupler" for a radio receiver. The mahogany frame holds four brass binding posts, two for the fixed primary coil and two for the movable secondary coil. A primary coil slider varies the inductance of this section. A 12-point rotary switch varies the secondary inductance. May have been made by Wm. B. Duck Company.
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.321281
label: catalog number
content: 321281
label: accession number
content: 241556
objectType: label: Object Name
content: loose coupler
label: Object Name
content: variable inductance
physicalDescription: label: Measurements
content: overall: 6 in x 18 1/4 in x 55 in; 15.24 cm x 46.355 cm x 139.7 cm