DocumentCode :
1042098
Title :
Carrier Current Telephony and Telegraphy
Author :
Colpitts, E.H. ; Blackwell, O.B.
Author_Institution :
Western Electric Co.
fYear :
1921
Firstpage :
205
Lastpage :
300
Abstract :
This paper briefly outlines first the history of the development of carrier multiplex telegraphy and telephony. The fundamental principles underlying particularly the newer developments of the art are then discussed. Consideration is likewise given to the propagation characteristics of open wire lines, including those containing intermediate lengths of cable. Commercial types of apparatus and actual installations are then described and a brief statement made as to further applications of the art.
Keywords :
Circuits; Communication system control; Frequency; Telegraphy; Telephony; Wire;
fLanguage :
English
Journal_Title :
American Institute of Electrical Engineers, Transactions of the
Publisher :
ieee
ISSN :
0096-3860
Type :
jour
DOI :
10.1109/T-AIEE.1921.5060708
Filename :
5060708
Link To Document :
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