DocumentCode
1069765
Title
An Improved System of Modulation in Radio Telephony
Author
Culver, Charles A.
Author_Institution
Canadian Radio Corporation, Limited, Toronto, Canada
Volume
11
Issue
5
fYear
1923
Firstpage
479
Lastpage
492
Abstract
After describing the commonly employed absorption and constant current systems of radio telephone modulation, the author discusses a system of modulation wherein the resistance in the grid circuit of the power oscillator tubes is vocdly varied, this resistance being itself the plate circuit of a suitable vacuum tube. Operating data on sets embodying this method are given.
Keywords
Antenna accessories; Circuits; Control systems; Electric resistance; Electromagnetic wave absorption; Loaded antennas; Radio control; Radio frequency; Telephony; Transmitting antennas;
fLanguage
English
Journal_Title
Radio Engineers, Proceedings of the Institute of
Publisher
ieee
ISSN
0731-5996
Type
jour
DOI
10.1109/JRPROC.1923.219914
Filename
1666821
Link To Document