Grebe type RORK audio frequency amplifier
date: label: date made
content: ca 1922
name: label: maker
content: A. H. Grebe & Co.
notes: label: Description (Brief)
content: Marked: "Grebe Radio / Richmond Hill, N.Y. / Type RORK / Serial No. 3619". Plate: Manufactured Under Grebe Patents Granted and Pending." Specimen is a two stage audio-frequency amplifier employing transformer coupling between stages. Detector leads plug into panel jack, and audio output is taken from 1st or 2nd stages. 201-A tubes (missing) are normally used. Filament rheostats are on the front panel. Reference: Grebe Catalog Sheet, "Short Wave Regenerative Receivers," 1922.
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.320998
label: catalog number
content: 320998
label: accession number
content: 241556
objectType: label: Object Name
content: radio amplifier
label: Object Name
content: audio amplifier
physicalDescription: label: Measurements
content: overall: 7 in x 8 in x 7 1/4 in; 17.78 cm x 20.32 cm x 18.415 cm