Title :
Line problems in the development of the 12-channel open-wire carrier system
Author :
Ilgenfritz, L. M. ; Hunter, R. N. ; Whitman, A. L.
Author_Institution :
Bell Telephone Laboratories, Inc., New York, N. Y.
Abstract :
The development of the type J 12-channel carrier telephone system for open-wire lines required an increase of nearly 5 to 1 in the transmission frequency range of the lines. In the provision of suitable line facilities a number of new problems were encountered with respect to attenuation, noise and cross talk. Methods for meeting these problems and the results obtained are described.
Keywords :
Absorption; Attenuation; Ice; Meteorology; Porcelain; Reflection; Wires;
Journal_Title :
Electrical Engineering
DOI :
10.1109/EE.1939.6431690
