Westinghouse type UZ-4083B condenser microphone
date: label: date made
content: ca 1932
name: label: maker
content: Westinghouse Electric & Manufacturing Co.
label: maker
content: Radio Corporation of America
notes: label: Description (Brief)
content: Westinghouse type UZ-4083B "camera box" condenser microphone without stand. Marked: "Condenser Microphone / for use with type TBH / Radio Transmitter / Serial 7. / Manufactured for U.S. / Department of Commerce / Airways Division by / Westinghouse Electric & / Manufacturing Company / Chicopee Falls Works / Chicopee Falls, Mass., U.S.A. / Contract CC-156. / Order No. 31-15964."
label: Description (Brief)
content: On microphone element unit: "Type UZ-4083-B. / No. 13012-RE / RCA Condenser Microphone Unit. / Pats.: 1333744, 1456538, 1758777."
label: Description (Brief)
content: A condenser microphone depends for its operation on the variation of capacitance between two closely spaced metallic plates. One plate is fixed, and the other movable, which responds to sound waves. This unit consists of a plug-in condenser microphone and associated box type amplifier. The amplifier employs three stages of resistance coupled amplification utilizing UX-864 Radiotrons. A tapped out transformer provides choice of 70, 250 or 500 ohms output impedance. Reference: RCA Victor Broadcast Apparatus Bulletin No. 11, 1932, "Condenser Microphone". Clark Collection: CWC 63-133.
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.321413
label: catalog number
content: 321413
label: accession number
content: 241556
objectType: label: Object Name
content: microphone
label: Object Name
content: condenser microphone
physicalDescription: label: Measurements
content: overall: 6 in x 7 in x 7 1/4 in; 15.24 cm x 17.78 cm x 18.415 cm