Wireless Specialty "Triode B" two-step radio amplifier
date: label: date made
content: 1919
name: label: maker
content: Wireless Specialty Apparatus Co.
notes: label: Description (Brief)
content: Wireless Specialty "Triode B" two-step radio amplifier, sn 89, Marked: "Two Step Amplifier / Type Triode B / Serial No. 89 / Wireless Specialty Apparatus Co. / Boston, U.S.A." Plate: "Licensed for Amateur / and Experimental use only." This apparatus consists of two vacuum tube receptacles, two filament control rheostats, and two amplifying transformers. Shock proof mountings protect the vacuum tube from "noise" due to mechanical vibration. Operating components are mounted on the rear of a bakelite dilecto panel and enclosed by an oak box. At the bottom of the panel are terminals for connecting the 6 volt filament and the 40 volt plate batteries. Other binding posts are provided for input and output circuit connections. Reference: Radio Equipment Catalog, Wireless Specialty Apparatus Co., Boston, (1919), page 41.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Franklin Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.321712
label: catalog number
content: 321712
label: accession number
content: 241556
objectType: label: Object Name
content: radio amplifier
physicalDescription: label: Measurements
content: overall: 11 1/2 in x 7 3/4 in x 7 1/4 in; 29.21 cm x 19.685 cm x 18.415 cm