U.S. Navy model SE-143 radio receiver
date: label: date made
content: c 1917
label: date made
content: ca 1917
name: label: maker
content: National Electrical Supply Company
notes: label: Description (Brief)
content: Marked: (Name plate reads): Radio Receiver / Type SE 143 Serial No. 603N / [lambda] 250-3000 M / Made for Bureau of Steam / Engineering by / National Electric Supply Co. / Washington, D.C. / REQ. No. 587 NSA / Cont. No. 33077 / Date: 11-3-17. Instrument was designed primarily for reception of spark signals with a crystal detector, also for the reception of continuous waves with the use of an external audion control box. Range of receiver primary is 250-3100 meters. Range of tuned secondary is 250-6800 meters. Wavelength range of primary may be increased from 3100 to over 7000 meters by connecting primary variable condenser in parallel with primary inductance. Two tuning capacitors on the panel are used for primary and secondary tuning respectively. Primary condenser is of the balanced plate type; secondary capacitor varies in capacity from .00006 mfd. to .0032 mfd. REF: "U.S. Navy Radio Receiver Type SE-143 Range 250 to 3100 Meters." Description and Operating Instructions. (Washington, D.C., 1918 -- Radio Test Shop, U.S. Navy Yard). See Clark Collection: SRM 46-330 (Cl. 46, Book 3).
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.320686
label: serial number
content: 603N
label: catalog number
content: 320686
label: accession number
content: 241556
objectType: label: Object Name
content: US Army Signal Corps model BC-98B radio reciever
label: Object Name
content: radio reciever
physicalDescription: label: Measurements
content: overall: 14 1/2 in x 22 3/4 in x 10 1/2 in; 36.83 cm x 57.785 cm x 26.67 cm