Chapter 11, Problem 15STP

To determine

The type of radio stations which emit waves at higher frequencies AM stations or FM stations.

Explanation of Solution

Introduction:

Radio station uses two types of modulation techniques, amplitude modulation (AM) and frequency modulation (FM). Both the methods are a type of broadcasting radio signals. Of the two FM station has higher frequency.

In AM radio stations, the amplitude of the signals is varied whereas in FM stations the frequencies are varied. The amplitude of FM stations remains constant and uses higher frequency range and lager bandwidth than AM stations.

Conclusion:

Hence, FM stations emit waves at higher frequency.