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What is the typical range of AM modulation index (depth)? What will happen if it is...

What is the typical range of AM modulation index (depth)? What will happen if it is at the lowest value or highest value in the range? What will happen if it goes beyond the range? too low a level of modulation and the modulation does not utilize the carrier efficiently - too high and the carrier can become over modulated causing sidebands to extend out beyond the allowed bandwidth causing interference to other users.

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