RCA type 6146 "Radiotron" beam power amplifier
date: label: date made
content: ca 1947
name: label: maker
content: Radio Corporation of America
notes: label: Description (Brief)
content: A plastic 8-pin base with center post, metal shell, top contact, T-shaped envelope. Stamped on envelope: “8146 / [??]B”; on base: “Made in / U.S.A. / RCA / Radiotron / Electron / Tube / [RCA logo]”. Donor’s card reads: “Beam power amplifier made by the Radio Corporation of America. Used extensively in commercial made amateur transmitters of the 1947 period. Used in some units with two or three tubes in parallel for increased output. A very highly efficient tube at frequencies up to 60 megacycles, but easily damaged in tuning if the grid drive is allowed to exceed 5 milliamperes. Coated cathode: heater 6.3 volts at 1.25 amperes. For Class C operation: plate 500 volts at 120 ma, screen 170 volts, negative control grid bias 66 volts, driving power to grid .2 watt, for an output of 48 watts.” See also: https://www.radiomuseum.org/tubes/tube_6146.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.324525
label: catalog number
content: 324525
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: electron tube
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 4 in x 1 3/4 in; 10.16 cm x 4.445 cm