COMPUTER NETWORKS AND COMMUNICATIONS
WIRELESS COMMUNICATION TECHNOLOGIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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As changes in the frequency of the wave
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As changes in the amplitude of the wave
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As changes in the wavelength of the wave
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As changes in the resonance of the wave
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Detailed explanation-1: -FM Broadcasts: FM signals travel as changes, or modulations, in the frequency of the wave.
Detailed explanation-2: -From the antenna on top of the radio station, the highest point in the air it can reach, the signal is then broadcast as electromagnetic waves. The receiver on your personal radio then picks up the waves, amplifies them, and converts them back into sound through the speaker.
Detailed explanation-3: -They need to be altered, or modulated. A signal–a transverse sound wave–overlays the carrier wave, forcing it to change. There are two ways radio stations modulate their carrier waves: amplitude modulation, or AM, and frequency modulation, FM.
Detailed explanation-4: -Radio-wave communications signals travel through the air in a straight line, reflect off of clouds or layers of the ionosphere, or are relayed by satellites in space.