Title :
Two-channel submarine carrier telegraph system
Author :
Newell, E. L. ; Cramer, G. H.
Author_Institution :
Western Union Telegraph Company, New York, N. Y.
fDate :
4/1/1950 12:00:00 AM
Abstract :
ANEW 2-channel carrier telegraph system for short submarine telegraph cables has been developed for the Western Union Key West-Havana cables, about 100 nautical miles in length and with attenuations up to 80 decibels at 1,000 cycles per second. It utilizes standard land-line frequency-modulation channel terminal equipment and provides 50-cycle telegraph transmission on both channels without appreciably degrading the physical circuits.
Keywords :
Attenuation; Brushes; Frequency modulation; Impedance; Multiplexing; Power harmonic filters; Underwater vehicles;
Journal_Title :
Electrical Engineering
DOI :
10.1109/EE.1950.6433791
