Experimental superheterodyne receiver
date: label: date made
content: ca 1922
notes: label: Description (Brief)
content: No maker's mark. Unit appears to be an early experimental superheterodyne receiver employing two 201A type tubes in a circuit which includes two fixed tuned RF stages marked A & B, an oscillator tube, and heterodyne tuning control. No tubes inside unit. Four gear-driven tuning capacitors are employed, one variable coupling inductance, and six other fixed coils, two of which are used in the RF stages. Companion piece to catalog number 320798.
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.320797
label: catalog number
content: 320797
label: accession number
content: 241556
objectType: label: Object Name
content: radio receiver
physicalDescription: label: Measurements
content: overall: 8 1/4 in x 40 in x 9 in; 20.955 cm x 101.6 cm x 22.86 cm