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Why is the area of coverage for AM radio greater than FM radio?
Wiki User
∙ 15y ago
The basic reason is that AM radio is broadcast on a lower frequency, while FM is broadcast on a higher frequency. And the lower frequency signals will curve around the earth a bit more than the higher frequency FM signals. FM is considered more "line of sight" than AM, which has that "fat" ground wave that hugs the earth a bit more.
Wiki User
∙ 15y ago
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