FM stations tend to be stronger than AM stations, sometimes reaching as far away as 600 miles, which is why music stations prefer FM, and talk radio and stations that broadcast sporting events are often found on AM.

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Quizplus · Accepted Answer

FM radio typically has a higher sound quality than AM radio but has a shorter range, usually up to about 100 miles under normal conditions, whereas AM radio waves can travel much longer distances, especially at night, due to their ability to reflect off the ionosphere.

FM Stations Tend to Be Stronger Than AM Stations, Sometimes