FM and AM Radio Communication Concepts

What is the primary purpose of modulation in radio communication?

• To improve the color quality of the signal

• To reduce the cost of broadcasting

• To attach the input signal to a carrier wave for long-distance transmission

• To increase the volume of the audio signal

How does amplitude modulation (AM) transmit audio information?

• By modifying the amplitude of the carrier wave

• By reducing the bandwidth of the signal

• By using digital signals instead of analog signals

• By changing the frequency of the carrier wave

What is one key advantage of AM over FM?

• AM operates at a higher frequency range

• AM is less susceptible to noise

• AM provides better sound quality

• AM has a broader geographic coverage

Why is FM often preferred by music radio stations?

• It is cheaper to broadcast using FM

• FM signals can reach remote areas more effectively

• FM provides superior sound quality

• FM requires less bandwidth than AM

What is a limitation of FM compared to AM?

• FM operates at a lower frequency range

• FM can transmit more signals within a limited bandwidth

• FM requires more expensive equipment

• FM is more vulnerable to noise