In the modern society, radio is the most widely used of broadcasting and electronic communication. It plays a major role in many areas. In radio broadcasts, they use the radio waves, which can be both microwaves, and longer radio waves. These are transmitted in two ways: amplitude modulation (AM) and frequency modulation (FM). These two kinds of waves have many differences.
Amplitude modulation is the oldest method of transmitting voice and music through the airwaves. Amplitude modulation is used by station broadcasting in the AM band and by most international short wave stations. …
