system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If FM is frequency modulation, then why does each radio station have a specific frequency?

I get that AM carries info by creating a sound wave with the contours of a (given frequency) wave's amplitude.  But if you modulate 93.7MHz, then it's no longer 93.7.  What am I not getting?
gpt
each fm station has a primary carrier frequency. these carrier frequencies are separated from each other by 200 KHz. out of that only 150KHz is used for modulating the analog signal wave. this leaves a guard band of 50KHz to help prevent crosstalk.

so basically you have the station carrier wave, and then you add or subtract up to 75KHz from the carrier frequency to match the audio wave.