Modulation in Radio Telephony
Open Access
- 1 August 1921
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Proceedings of the IRE
- Vol. 9 (4), 305-352
- https://doi.org/10.1109/jrproc.1921.220132
Abstract
After considering the general characteristics of a voice-modulated radio frequency current, there is given a systematic classification of the various methods of producing such modulation in transmitters using three-electrode vacuum tubes. The output, efficiency, stability, completeness of modulation, quality, and other characteristics of each method of modulation are studied. The apparatus and circuits used in the long distance radiophone tests at Arlington, Virginia, in 1915, are described.Keywords
This publication has 1 reference indexed in Scilit:
- The audion oscillatorJournal of the American Institute of Electrical Engineers, 1920