U.S. Navy model SE-1220 radio receiver
date: label: date made
content: c 1918
label: date made
content: ca 1918
name: label: maker
content: Westinghouse Electric & Manufacturing Co.
notes: label: Description (Brief)
content: Marked: Medium Wave Receiver / Type SE 1220 / Made for Navy Dept. (BU. S.E.) / by / Westinghouse Electric & Mfg. Co. / 1918 / Range 300-6800 M / Serial 68-AY". Device was designed primarily for reception of spark signals and secondarily for reception of continuous waves (CW) using an audion control box as detector. A four pole, double throw switch in the receiver permits use of either crystal detector or audion. Range of primary and of tuned secondary is 300-6800 meters. Antenna tuned by means of series variable condenser and a 10-step variable inductance. Secondary is tuned by shunt variable condenser and 6-step variable inductance. Coupling between primary and secondary is purely inductive. REF: "Descriptions and Directions for use of the U.S. Navy Radio Receiver Type SE 1220; Range 300 to 6800 Meters." (Radio Test Shop, U.S. Navy Yard, Washington, D.C. December, 1918, (See Clark Collection SRM 46-399. Class 46 Book 4.)
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.320701
label: catalog number
content: 320701
label: accession number
content: 241556
objectType: label: Object Name
content: radio receiver
physicalDescription: label: Measurements
content: overall: 14 1/2 in x 22 7/8 in x 11 in; 36.83 cm x 58.1025 cm x 27.94 cm