DocumentCode
1015278
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
Member of the technical staff of Bell Telephone Laboratories, Inc., New York, N. Y.
Volume
58
Issue
12
fYear
1939
Firstpage
656
Lastpage
665
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
Attenuation; Communication channels; Dielectrics and electrical insulation; Impedance; Power transformer insulation; Radio spectrum management; Repeaters; Telephony; Wiring;
fLanguage
English
Journal_Title
American Institute of Electrical Engineers, Transactions of the
Publisher
ieee
ISSN
0096-3860
Type
jour
DOI
10.1109/T-AIEE.1939.5057881
Filename
5057881
Link To Document