There is a thing, as a "radio waves". Radio waves is been used to transfer information "through the air on a big distance" without cables, wirelessly so to say, in other words: one thing does sending the content, and another thing does getting this content, using the reality.
This does works by the following paradoxal law of the nature:
"the quieter - the louder it is!".
So, the sender - is a device, which sounding as quiet as possible. This quiet sound will be heard on the distance of the 100 km so to say. And a getter - is the device, which does "hearing" this quiet sound.
So, the radio tower - is a thing, which doing the function - "do sounding as quiet as possible", and the radio player - is the device which does listening this quiet sound, and amplifing it.
So, the user does hearing the transer, as if the player would be right there where the user is, and as if the player is connected with the cable, while the player is actually somewhere far away from the user.
So, if there will be some noise generator near the reciever, the user will not hear the content, which was initially sounding quietly. The source of the noise will replace the content. Just like when something does replaces the sound with even more louder sound. For example, when human speaking and some drill does drilling the wall, humans would not hear each other, because the drill does sounding louder than humans speaking.
So, radio station sounding as quiet as possible, and the radio in the car does listening this quiet sound and then amplifies it, and a human do hearing the content from the radio station.
Summary of what the radio waves is: it is like two humans standing 100 meter away from each other, and loudly screaming to each other some text, and one understands another.