Terrestrial Broadcasting
Terrestrial broadcasting is the most common way of broadcasting, the radio station has an antenna from their station building and the antenna sends signals around the radius that they're licensed to, to households/cars that has the ability to recieve the signals and their device converts the signals to sound.
Satellite Broadcasting
Satellite broadcasting is more or less like terrestrial broadcasting but the stations send their signals into a satellite in space and the then it sends signal to the households that has a satellite dish and then the signals are converted in their reciever into sound.
Podcast Reception
The radio stations put their pre-recorded shows into a file (.mp3, .Wav) and then they put it onto a server so other people can download the file onto their device, and it can be listened on iTunes, Windows Media Player, VLC Player etc.
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