"Federal Junior" crystal radio receiver
date: label: date made
content: 1923
name: label: maker
content: Federal Telephone & Telegraph Co.
notes: label: Description (Brief)
content: Marked: Stamped on base: "Federal Jr."; "Patented", dates include: 1/21/08; 11/17/08; 6/15/09; 9/7/09; 7/21/14; 9/8/14; 11/24/14; 4/27/15; 1/23/17". "Licensed for Amateur, Experimental / or Entertainment Purposes Only. / Any Other Use Will Constitute Infringement. / Federal Telephone & Telegraph Co. / Buffalo, N.Y. U.S.A." Unit has two tuning circuits for antenna and detector tuning (0-10 scale). Crystal detector (missing) mounts on top of frame. Binding posts for connecting to external circuit on top of unit. Manufacturer claims reception range of 15-30 miles from radiotelephone stations and of 100-500 miles for ship and shore commercial stations. Reference: "Federal Radio Catalog, Bulletin 102-W", Feb. 1923, page 12.
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.321210
label: catalog number
content: 321210
label: accession number
content: 241556
objectType: label: Object Name
content: crystal radio
label: Object Name
content: radio receiver
physicalDescription: label: Measurements
content: overall: 8 1/4 in x 8 3/8 in x 8 1/4 in; 20.955 cm x 21.2725 cm x 20.955 cm