St. James Laboratories radio frequency coil
date: label: date made
content: ca 1925
notes: label: Description (Brief)
content: Manufacture: St. James Laboratories Inc., Chicago, IL. Tipped glass T-shape tube on surface-mount bakelite base, 4 terminals. Red paint on top worn, about 40% gone. Two coils set horizontally inside tube, one (green) set above the other (white), both show a tight diamond weave pattern. Antenna coil for a receiver enclosed in a cylindrical glass tube. Primary winding is green, secondary winding is white. Honeycomb construction.
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.321796
label: catalog number
content: 321796
label: accession number
content: 241556
objectType: label: Object Name
content: Transformer, Radio Frequency
label: Object Name
content: radio coil
label: Other Terms
content: Transformer, Radio Frequency; Radio
physicalDescription: label: Measurements
content: overall: 3 3/4 in x 2 1/8 in; 9.525 cm x 5.3975 cm