DocumentCode
1323916
Title
Carrier current telephony and telegraphy
Author
Colpitts, E.H. ; Blackwell, O.B.
Author_Institution
Western Electric Co.
Volume
40
Issue
6
fYear
1921
fDate
6/1/1921 12:00:00 AM
Firstpage
517
Lastpage
526
Abstract
Under this section there is given a description of the apparatus which has been developed for commercial service and of the manner of employing it in actual installations in the Bell Telephone Plant. To date there have been developed and put into commercial use, three distinct types of multiplex carrier systems, as follows:
Keywords
Coils; Electron tubes; Frequency modulation; Harmonic analysis; Power harmonic filters; Repeaters;
fLanguage
English
Journal_Title
American Institute of Electrical Engineers, Journal of the
Publisher
ieee
ISSN
0360-6449
Type
jour
DOI
10.1109/JoAIEE.1921.6593022
Filename
6593022
Link To Document