RCA type 956 “acorn” pentode
date: label: date made
content: ca 1935
name: label: maker
content: Radio Corporation of America
notes: label: Description (Brief)
content: A small glass tube, no base, tip on bottom, three contact pins on one side, two on the other side, single lead on top. Stamped: “[RCA logo] / 956 / Made / in U.S.A.” Donor’s card reads: “Pentode, acorn type, made by the Radio Corporation of America about 1935. Used as radio frequency or intermediate frequency amplifier or mixer up to the UHF range. Remote cutoff type, heater: 6.3 volts at .15 ampere. 250 volts maximum on the plate, 100 volts on the screen, 3 volts negative control grid bias, amplification factor 1440.” See also: https://www.radiomuseum.org/tubes/tube_956.html.
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.325078
label: catalog number
content: 325078
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: pentode
label: Other Terms
content: Electron Tube, Triode; Electron Tubes
physicalDescription: label: Measurements
content: overall: 1 3/4 in x 1 1/4 in x 3/4 in; 4.445 cm x 3.175 cm x 1.905 cm