Federal type 30 radio frequency transformer
date: label: date made
content: 1923
name: label: maker
content: Federal Telephone & Telegraph Co.
notes: label: Description (Brief)
content: Federal type 30 radio frequency transformer on base, "Federal Telephone & Telegraph Co. / Buffalo, N.Y. / U.S.A. / Type No. 30 / 275-600 meters". Commercial radio frequency coil covering 275-600 meters. Connections for plate, grid, +B battery and - filament voltage. Recommended for use with UV-200 and UV-201 tubes. Sale price: $6.60. Reference: Federal Bulletin 102-W (1923), page 10.
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.321660
label: catalog number
content: 321660
label: accession number
content: 241556
objectType: label: Object Name
content: Transformer, Rf
label: Object Name
content: transformer
label: Other Terms
content: Transformer, Rf; Components; Radio and Television; Radio and Television
physicalDescription: label: Measurements
content: overall: 2 in x 4 1/4 in x 2 1/8 in; 5.08 cm x 10.795 cm x 5.3975 cm