True or False: A properly modulated radio signal must have a modulation depth greater than 100%.

True or False: A properly modulated radio signal must have a modulation depth greater than 100%.

• A. True
• B. False
• C. Sometimes
• D. It depends on the equipment

Answer: (B)

A properly modulated radio signal should have a modulation depth less than or equal to 100%. Modulation depth refers to the extent to which the carrier signal is varied by the modulating signal. If the modulation depth exceeds 100%, it leads to distortion, which can cause signal quality issues and the potential for interference in a communication system. This is because the carrier's amplitude cannot be varied beyond its original amplitude; otherwise, it results in an over-modulated signal where the waveform is clipped or distorted, thus compromising the information being transmitted. Hence, a modulation depth of greater than 100% is not considered effective or valid for proper signal propagation.

A properly modulated radio signal should have a modulation depth less than or equal to 100%. Modulation depth refers to the extent to which the carrier signal is varied by the modulating signal. If the modulation depth exceeds 100%, it leads to distortion, which can cause signal quality issues and the potential for interference in a communication system. This is because the carrier's amplitude cannot be varied beyond its original amplitude; otherwise, it results in an over-modulated signal where the waveform is clipped or distorted, thus compromising the information being transmitted. Hence, a modulation depth of greater than 100% is not considered effective or valid for proper signal propagation.