Raytheon type RK-25 power pentode
date: label: date made
content: ca 1943
name: label: maker
content: Raytheon Company
notes: label: Description (Brief)
content: A 7-pin plastic base with top contact, domed envelope. Donor’s card reads: “Power pentode made by Raytheon Mfg. Co. during World War II. Similar in all respects to the type 802 tubes made by RCA and GE, it is interchangeable with tubes of both manufacturers. Used as an audio amplifier and modulator, and as a radio frequency amplifier and oscillator up to 30 megacycles. Heater: 18.9 volts at .3 amperes. Used as a Class A audio amplifier 600 volts on the plate, 40 volts on the suppressor grid, 250 volts on the screen, 19 volt negative control grid bias, this tube will give 7.6 watts output.” See also: https://www.radiomuseum.org/tubes/tube_rk25.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.324815
label: catalog number
content: 324815
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: pentode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 5 1/2 in x 2 in; 13.97 cm x 5.08 cm