What type of modulation is commonly used in amateur radio for voice communication?

What type of modulation is commonly used in amateur radio for voice communication?

• A. Phase Shift Keying
• B. Amplitude Modulation
• C. Frequency Modulation
• D. Pulsed Modulation

Answer: (C)

Frequency Modulation (FM) is commonly used in amateur radio for voice communication due to its ability to provide better sound quality and resistance to noise compared to other modulation methods. In FM, the frequency of the carrier signal is varied in accordance with the amplitude of the voice signal. This results in a clearer signal, especially in situations where there may be interference or fading. FM allows for more effective communication over longer distances with greater clarity, making it the preferred choice among amateur radio operators when conducting voice communications. This is particularly useful in busy bands or areas with high levels of background noise, where clear audio is essential for effective communication. While Phase Shift Keying (PSK), Amplitude Modulation (AM), and Pulsed Modulation have their own applications in amateur radio, they are less commonly used for voice communications compared to FM. AM, for example, can be more susceptible to noise and distortion. Therefore, frequency modulation's robustness and audio fidelity are key reasons it's favored for voice transmission in amateur radio scenarios.

Frequency Modulation (FM) is commonly used in amateur radio for voice communication due to its ability to provide better sound quality and resistance to noise compared to other modulation methods. In FM, the frequency of the carrier signal is varied in accordance with the amplitude of the voice signal. This results in a clearer signal, especially in situations where there may be interference or fading.

FM allows for more effective communication over longer distances with greater clarity, making it the preferred choice among amateur radio operators when conducting voice communications. This is particularly useful in busy bands or areas with high levels of background noise, where clear audio is essential for effective communication.

While Phase Shift Keying (PSK), Amplitude Modulation (AM), and Pulsed Modulation have their own applications in amateur radio, they are less commonly used for voice communications compared to FM. AM, for example, can be more susceptible to noise and distortion. Therefore, frequency modulation's robustness and audio fidelity are key reasons it's favored for voice transmission in amateur radio scenarios.