Traditional radio is also called terrestrial radio. It uses radio waves to broadcast. These include AM, FM and DAB. Radio towers are something you've seen a lot of before. These tall masts can produce an enormous signal that covers a lot of ground, much like the distance between a city or neighboring villages. Even though the range is very limited, any person within the transmitter's reach can tune in. Online radio, on the other hand works in a completely different way. Anybody can listen to a radio broadcast via the internet. You can access a radio broadcast through any device, including a smart speaker, an app or a player.