Discussion
What is the effect on AM of a channel that attenuates one sideband more than the other?
Answer: A
Selective fading of one sideband unbalances the pair, so the envelope no longer reproduces the message faithfully and the recovered audio is distorted - a familiar problem on medium and short wave, and one reason single sideband is preferred for long-distance work. The carrier frequency is unaffected. Bandwidth is reduced only in the trivial sense that part of the signal is missing. And the message is degraded rather than lost entirely.
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