How Does the Radio Antenna Work?
The radio antenna on a car or on your home set is like an ear, listening for radio waves sent out by broadcasting stations.
The radio waves striking the antenna set up a small electric pressure. As a result, a weak electric current trickles into the radio set.
The antenna picks up radio waves from many different stations at once. By turning the tuning dial, you select the station you want to listen to.
An amplifier in your radio strengthens the weak signals, and the speaker changes them into sounds. You then hear the radio program being broadcast.