Grebe type RORK audio 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. 2474". Two-tube audio amplifier employing 201-A type triodes (missing). Output jacks for 1st and 2nd audio stages plus monitoring of detector stage. Two filament rheostats and observation windows. Input and output binding posts on front hard rubber panel; hinged top; one audio transformer is used. Battery binding posts on rear of chassis. One audio transformer missing and one in bad condition.
label: Description (Brief)
content: Reference: Grebe Catalog, undated, page 14. Grebe Catalog, "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.321204
label: accession number
content: 241556
label: catalog number
content: 321204
objectType: label: Object Name
content: audio amplifier
physicalDescription: label: Measurements
content: overall: 7 in x 8 in x 6 7/8 in; 17.78 cm x 20.32 cm x 17.4625 cm