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C-QUAM (Compatible QUadrature Amplitude Modulation) is the method of AM stereo broadcasting used in Canada, the United States and most other countries. It was invented in 1977 by Norman Parker, Francis Hilbert, and Yoshio Sakaie, and published in an IEEE journal .
The C-QUAM exciter replaces the crystal stage in an AM transmitter. The C-QUAM signal, consists of a phase modulated portion which is made up of both the L+R and L-R audio information and a conventional L+R (mono) portion, which is amplitude modulated.
Radio. Updated: Thursday, June 3, 2021. Stereophonic AM broadcasting in the USA uses the C-Quam system of encoding the stereo signal. This system has been the official standard since 1993. A very brief chronology of the events leading to the adoption of the AM stereo standard in the USA follows.
C-QUAM (Compatible QUadrature Amplitude Modulation) is the method of AM stereo broadcasting used in Canada, the United States and most other countries. It was invented in 1977 by Norman Parker, Francis Hilbert, and Yoshio Sakaie, and published in an IEEE journal.
The MotorolE C-Quam AM stereo system was originally conceived as a mathematical model of a high technology communication system by the corporate research and development staff. and was prove-) mathematically to be superior be'ore any-one touched a soldering iron. The Motcrola AM stereo system has not changed in concept since it
Mar 17, 2021 · Compatible Quadrature Amplitude Modulation (C-QUAM) is a means of transmitting stereophonic audio that is compatible with monophonic AM receivers. Developed by Motorola in 1977, this technique was one of four systems proposed to allow commercial station in the United States and elsewhere to transmit stereo audio.
C-QUAM (Compatible QUadrature Amplitude Modulation) is the method of AM stereo broadcasting used in Canada, the United States and most other countries. It was invented in 1977 by Norman Parker, Francis Hilbert, and Yoshio Sakaie, and published in an IEEE journal.
