Grebe type RORN tuned radio 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 RORN / Tuned Radio Amplifier / 150 to 3000 M. / Serial No. 294." Plate: "Manufactured Under Grebe Patents Granted and Pending. Unit is a single stage radio frequency amplifier employing a conventional 201A type triode. Tube is missing from unit. Two tuning capacitors are utilized. Battery and output binding posts are on the rear panel. Specimen has a 3" hole cut in the front panel where a 12-position sweep switch and tube viewing port had been located. Five loose radio frequency coils are inside the cabinet. Reference: "Grebe Catalog" (undated), page 19.
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.320819
label: catalog number
content: 320819
label: accession number
content: 241556
label: serial number
content: 294
objectType: label: Object Name
content: radio amplifier
label: Object Name
content: radio receiver
label: Object Name
content: audio amplifier
physicalDescription: label: Measurements
content: overall: 7 in x 16 1/2 in x 7 1/2 in; 17.78 cm x 41.91 cm x 19.05 cm