# Characteristics of Narrow band FM and Wide band FM

## Narrow band FM has the characteristics:

Options:

a) The frequency sensitivity kf is small
b) Bandwidth is narrow
c) Both a) and b)
d) None of the above

Correct Answer: c) Both a) and b)

Explanation:

The bandwidth of the FM signal depends upon the frequency sensitivity kf. When kf is small, the bandwidth of the FM signal becomes narrow and this is known as Narrow Band FM signal. The bandwidth of a narrowband FM signal is almost same as that of an AM signal.

## Wide band FM has the characteristics:

Options:

a) The frequency sensitivity kf is large
b) Bandwidth is wide
c) Both a) and b)
d) None of the above

Correct Answer: c) Both a) and b)

Explanation:

The bandwidth of the FM signal depends upon the frequency sensitivity kf. When kf is large, the bandwidth of the FM signal becomes wide and this is known as Wide Band FM signal. A large number of sidebands are produced in a FM signal. The bandwidth of a wideband FM signal is very large as compared to that of an AM signal.