Question

Why fm is used for sound transmission and am used for video?

Answer 1

Answer:

AM was adopted for the transmission of the video part of a TV signal because AM is the least wasteful of the radio frequency spectrum, which is a precious commodity in a wireless environment. FM, though, because of its relative noise-free reception, is used to transmit the audio part of the television signal.

Answer 2

Explanation:

Am is used for radio and tv channels