General Electric / Cunningham type C324A sharp cutoff tetrode
date: label: date made
content: ca 1934
name: label: maker
content: General Electric Company
notes: label: Description (Brief)
content: Plastic 5-pin base, top contact, S-shaped envelope. Base stamped: “[C logo] / Cunningham / C-324-A.” Donor’s card reads: “Sharp cutoff tetrode made by the General Electric Company for E. T. Cunningham Inc., of San Francisco. A revised version of the type 224 [catalog number 324402]. Used as a radio frequency amplifier or biased detector in AC operated radio receivers. Dates from the 1930s. Heater: 2.5 volts at 1.75 amperes. Plate: 250 volts, screen grid 90 volts, negative control grid bias 3 volts.” See also: https://www.radiomuseum.org/tubes/tube_c324-a.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.324649
label: catalog number
content: 324649
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: tetrode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 5 in x 1 3/4 in; 12.7 cm x 4.445 cm