RCA / Cunningham type 47 “Radiotron” power pentode
name: label: maker
content: Radio Corporation of America
notes: label: Description (Brief)
content: A plastic 5-pin base with domed envelope. Base stamped: "RCA Cunningham / Made in U.S.A. / Radiotron"; on envelope: "47". Donor’s card reads: “Power pentode, glass octal type, made by the Radio Corporation of America. For use in the audio output stage of AC/DC radio receivers. Filament: 2.5 volts at 1.75 ampere.”
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Paul G. Watson
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.324592
label: catalog number
content: 324592
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: pentode
physicalDescription: label: Measurements
content: overall: 5 1/4 in x 2 in; 13.335 cm x 5.08 cm