DocumentCode
1172545
Title
Audio-Frequency Atmospherics
Author
Burton, E.T. ; Boardman, E.M.
Author_Institution
Bell Telephone Laboratories, Inc., New York City
Volume
21
Issue
10
fYear
1933
Firstpage
1476
Lastpage
1494
Abstract
Various types of musical and nonmusical atmospherics occurring within the frequency range lying between 150 and 4000 cycles have been studied. Particular attention is directed to two types of the former, one a short damped oscillation, apparently a multiple reflection phenomenon, and the other a varying tone of comparatively long duration, probably related to magnetic disturbances. Several quasi musical atmospherics which appear to be associated with the two more distinct types are described. Dependence of atmospheric variations on diurnal, seasonal, and meteorological effects are discussed. Characteristics of audio-frequency atmospherics are shown in oscillograms and graphs.
Keywords
Atmospheric measurements; Attenuators; Band pass filters; Cities and towns; Frequency; Interference; Laboratories; Low pass filters; Telephony; Underwater cables;
fLanguage
English
Journal_Title
Radio Engineers, Proceedings of the Institute of
Publisher
ieee
ISSN
0731-5996
Type
jour
DOI
10.1109/JRPROC.1933.227485
Filename
1685239
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