DocumentCode
1215188
Title
Ultra-Short-Wave Multiplex
Author
Burrows, Charles R. ; Decino, Alfred
Author_Institution
Bell Telephone Laboratories, Inc., New York, N.Y.
Volume
33
Issue
2
fYear
1945
Firstpage
84
Lastpage
94
Abstract
The technical requirements of a twelve-channel ultra-short-wave multiplex system are discussed and the means of meeting them are described. The intermodulation between channels in equipment based on this design has been reduced to the point where it is possible to use twelve-channel radio systems in the toll plant. By employing a sufficient amount of envelope feedback, the transmitter can be operated with a high modulation factor without the use of spread sidebands.
Keywords
Cables; Circuit noise; Frequency; Laboratories; Radio transmitters; Receiving antennas; Telephony; Testing; Transmitting antennas; Wire;
fLanguage
English
Journal_Title
Proceedings of the IRE
Publisher
ieee
ISSN
0096-8390
Type
jour
DOI
10.1109/JRPROC.1945.232907
Filename
1696778
Link To Document