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Frequency Modulation (FM)
The sound wave is used in frequency modulation to alter the carrier’s frequency. The resultant wave will have a frequency that varies slightly. The amplitude of the wave does not change.
Properties of FM Radio
Messages sent by frequency modulation are not as susceptible to interference. This is because the amplitude of the wave does not affect its message. However, two stations with similar frequencies can overlap.
Question 9
(a) Is this wave a result of FM or AM encoding?
Frequency modulation (FM): its amplitude does not change. ↙
(b) Sketch the decoded wave.
