Answer Posted / andrew lyner

Most of the above is very very dodgy; do not take it seriously. Go elsewhere for proper answers.
FM was (and still is) frequently used for transmitting TV signals. All Satellite TV transmissions (before Digitial came along) used FM. It is much easier to produce high power FM than high power AM, in a satellite, because klystron amplifiers and TWTs are not linear amplifiers.
The reason for using FM for analogue TV sound is that you have enough available bandwidth to give you a better signal to noise ratio with the permitted sound power .
And read more than what I have written.

numerical on total power transmission in AM

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1265

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525

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