U.S. Navy model CG-1410 radio transmitter
date: label: date made
content: c. 1918
label: date made
content: ca 1918
name: label: maker
content: General Electric Company
notes: label: Description (Brief)
content: Marked on front panel plate: "Type CG 1410 / Vacuum Tube Transmitter / For Type SE-1370 / Aircraft Radio Equipment / Wavelengths 507-600-800-975 Meters / Made for Navy Dept. (BU. ENG.) / by General Electric Co., U.S.A. / Cont. N-5068 Date: 9-5-18 / Req. 533SE 19 SER G137 / Antenna characteristics as follows: / FUN. WAVE LENGTH 315 Meters / FUN. CAPACITANCE 300 MicMic FD / Eff. Resistance at 600 M 9 ohms / Patd. Oct. 22, 1918". Top panel plate reads: "Type SE-1370 / 50 Watt (output) / Vacuum tube / Aircraft Radio Equipment / Telegraph and Telephone Transmitter / Made for Navy Dept. (Bu. Eng.) / By General Electric Co., U.S.A. / Cont. N-5068 Date: 9-5-18 / Req. 533 SE 19 SER. G137 / Comprising the following Unit Parts: / Transmitter CG-1430 / Dynamotor CG-1141 / Modulation Amplifier CG4030-A / Send Receive Switch SE-4015 / Telegraph Key SE1443A / Microphone SE4005 / Artificial Antenna CD4017 / Antenna Reel SE1299 / and necessary equipment." A World War I transmitter employing two vacuum tube triodes. One tube socket lead is broken. Panel controls include filament rheostat and ammeter, a wavemeter and an antenna inductance tuning control for 507 & 600 meters and 800-975 meters. REF: Clark Collection: Navy Type No's, 1918, page 116.
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.320789
label: catalog number
content: 320789
label: accession number
content: 241556
objectType: label: Object Name
content: radio transmitter
physicalDescription: label: Measurements
content: overall: 15 1/2 in x 19 1/2 in x 9 in; 39.37 cm x 49.53 cm x 22.86 cm