DocumentCode
1179945
Title
A Method of Reducing Disturbances in Radio Signaling by a System of Frequency Modulation
Author
Armstrong, Edwin H.
Author_Institution
Department of Electrical Engineering, Columbia University, New York City
Volume
24
Issue
5
fYear
1936
fDate
5/1/1936 12:00:00 AM
Firstpage
689
Lastpage
740
Abstract
A new method of reducing the effects of all kinds of disturbances is described. The transmitting and receiving arrangements of the system, which makes use of frequency modulation, are shown in detail. The theory of the process by which noise reduction is obtained is discussed and an account is given of the practical realization of it in transmissions during the past year from the National Broadcasting Company´s experimental station on the Empire State Building in New York City to Westhampton, Long Island, and Haddonfield, New Jersey. Finally, methods of multiplexing and the results obtained in these tests are reported.
Keywords
Amplitude modulation; Art; Circuits; Cities and towns; Frequency modulation; Noise reduction; Proposals; RF signals; Radio transmitters; Testing;
fLanguage
English
Journal_Title
Radio Engineers, Proceedings of the Institute of
Publisher
ieee
ISSN
0731-5996
Type
jour
DOI
10.1109/JRPROC.1936.227383
Filename
1686149
Link To Document