Am & fm radio broadcasts

1. AM & FM Radio Broadcasts. By Anisah Kalam 12A3

2. What is FM Radio? FM refers to frequency modulation, FM technology in which information (sound) is encoded by varying the frequency of the wave and the amplitude is kept constant. FM uses changes in the wave’s frequency to convey information.

3. What is AM Radio? AM refers to amplitude modulation, AM works by modulating (varying) the amplitude of the signal or carrier transmitted according to the information being sent, while the frequency remains constant. Modulation is the process of impressing a low frequency information signal (baseband signal) onto a higher frequency carrier signal.

4. AM Vs. FM So, AM (or Amplitude Modulation) and FM (or Frequency Modulation) are ways of broadcasting radio signals. Both transmit the information in the form of electromagnetic waves.