Generally, the wavelength of an FM signal is shorter than an AM
signal. A typical FM broadcast band is 88-108 MHz, while a typical
AM broadcast band is 540-1660 KHz, making the FM signal wavelength
100 times shorter.
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Commercial AM broadcast stations ... original RF format, not HD
... occupy 20 KHz channels.
Commercial FM broadcast stations occupy 200 KHz channels.
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The carrier frequency will cause interference with any AM
station on or near that frequency.
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Niigata Kenmin FM Broadcast was created on 2000-12-20.