What is the difference between AM and FM radio and why is FM more popular?
In: Technology
If you want to make a secret code that only uses waves to communicate, there are only so many ways you could do that.
You could make it depends on how big the waves are, or how fast the wave is.
Amplitude modulation (AM)is a code which depends how big the wave is.
Frequency modulation (FM) is a code which depends on how fast the wave travels.
These codes have different pros and cons. FM is designed in a way that you can give more information at once, AM however, can go further and still be understood.
For our radio, FM is king because we want that extra information, because that means we can have nicer sounding music. The range isn’t much of an issue because you can just build more radio stations.
But it’s easy to imagine a situation where we would prefer a less nice sounding signal that can travel really far.
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