Guard bands are provided in FM signal to

Guard bands are provided in FM signal to

Options:

a) Prevent interference from adjacent channels
b) To increase the noise
c) To increase bandwidth
d) None of the above

Correct Answer: a) Prevent interference from adjacent channels

Explanation:

The guard bands are provided to prevent the interference between adjacent channels in FM signals. Guard bands of 25KHz are allowed on the either sides so the channel width becomes 2(75+ 25) = 200KHz where 75KHz is the maximum permissible frequency deviation allowed for commercial FM broadcast.