RCA "Radiola 20" radio receiver
date: label: date made
content: 1926
name: label: maker
content: RCA Corporation
notes: label: Description (Brief)
content: Marked: plate reads: "Radiola 20 / Serial 123531 / Model AR-918 / Range 550-1500 / Kilocycles". Unit is a TRF (tuned radio frequency) receiver with regeneration, employing four UX-199 radiotrons and one UX-120. The circuitry consists of two stages of tuned radio frequency amplification, a regenerative detector, and two stages of audio frequency amplification. The UX-120 in the final audio stage will drive a loudspeaker. To facilitate tuning, the three main SFL (straight line frequency) tuning condensers have been mechanically coupled together and adjusted in phase so that they are operated by one control drum. Two auxiliary vernier condensers permit fine tuning adjustments. Tubes are missing. Allied Van Lines shipping tag #97 on unit. Reference: RCA Service Notes, 1923-28.
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.321098
label: catalog number
content: 321098
label: accession number
content: 241556
label: serial number
content: 123531
label: model number
content: AR-918
objectType: label: Object Name
content: radio receiver
physicalDescription: label: Measurements
content: overall: 11 in x 19 in x 16 in; 27.94 cm x 48.26 cm x 40.64 cm