Radio signals utilize a certain frequency, or how the speed with which the signals in the electromagnetic field travel in an up-and-down motion. When tuning in to your radio, the numbers you’d find on the dial panel indicated mega or kiloHertz of the broadcasting signal. On the other hand, Frequency Modulation (FM) radios have their signal’s frequency (speed) changed instead of the amplitude. In Amplitude Modulation (AM) radios, the amplitude (strength) of the signal is modulated (changed) to help the radio produce sounds. This signal is now picked up by a receiver which functions as a translator that translates the signal to the sound you now hear via the radio. In the radio, there’s a transmitter that radiates the signals outward through an antenna. In a sense, they are electromagnetic waves that travel very swiftly in a back and forth manner. So, sit back, grab a can of your favorite soft drink read and enjoy! FM & AM Radio How Do They Work In Home & Car?įM and AM radio work by receiving and transmitting signals in the form of electromagnetic waves. To understand why this happens, you need to know what triggers and causes this.Īnd thankfully, we wrote this content to address just that. It is particularly true if you are about to tune in to your favorite radio program.īut what could be the cause? Why would your radio decide which band to connect to and which to shy away from? One of the major mood killers is a situation where FM radio doesn’t work but AM does & AM radio doesn’t work but FM does.Īt other times, your FM and AM radio work just as fine, but your device finds it hard picking up some signals.
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