TELECOMMUNICATIONS SYSTEMS
COMMUNICATION WIRELESS COMPUTING DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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carrier wave
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transmission wave
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FM wave
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AM wave
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Detailed explanation-1: -Radio waves are used for wireless transmission of sound messages, or information, for communication, as well as for maritime and aircraft navigation.
Detailed explanation-2: -The basic principle is simple. At one end, a transmitter “encodes” or modulates messages by varying the amplitude or frequency of the wave – a bit like Morse code. At the other, a receiver tuned to the same wavelength picks up the signal and ‘decodes’ it back to the desired form: sounds, images, data, etc.
Detailed explanation-3: -Electromagnetic Waves occur with frequencies ranging from 104 to 1024 Hz and have wavelengths from 10–16 to 104 meters. The common feature of all types of electromagnetic waves is that their speed in a vacuum is 3.00 × 108 m/s. Radio waves make up the long wavelength, low-frequency end of the electromagnetic spectrum.
Detailed explanation-4: -To summarise, waves carry energy. The amount of energy they carry is related to their frequency and their amplitude. The higher the frequency, the more energy, and the higher the amplitude, the more energy.