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The principal disavantages of the QAM modulation

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Some one could tell me the principal disavantages of the QAM modulation, (in analog not digital signal)
 

disadvantages of qam

This is a way to get two audio sources on one carrier. Since it is analog, the leakage of the audio of each channel to the other will be bothersome if they are different but not if they are stereo (left, right of the same source).
 

disadvantages qam transmitter

hi

you'll also HAVE TO use linear transmitter,
and it's very complicated to keep the linearity due to very complex RF filtering


good luck.

Added after 1 minutes:

hi

you'll also HAVE TO use linear transmitter,
and it's very complicated to keep the linearity due to very complex RF filtering


good luck.
 

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