three stage experimental audio amplifier
date: label: date made
content: ca 1915
notes: label: Description (Brief)
content: Three stage experimental audio amplifier, unit housed in a wooden case with three copper-lined compartments that isolate each section. All controls and inputs are on the front panel. Separate input jack for each section with one output jack after the final section. Terminals for the tube voltages and a control for each of the tube filaments are also on the front panel. Unit now has only one tube installed - a Radiotron UX-112A in the first section. Top of case is hinged. No maker labels. Capacitors dated 1915. No extant makers marks..
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.336482
label: accession number
content: 1977.0896
label: catalog number
content: 336482
objectType: label: Object Name
content: audio amplifier
physicalDescription: label: Measurements
content: overall: 7 3/4 in x 19 3/4 in x 12 in; 19.685 cm x 50.165 cm x 30.48 cm