A 93 MHz carrier is frequency modulated by a 9 kHz sinewave, resulting in a frequency deviation of 53 kHz. Calculate the modulation index of the resulting FM signal (to 2 decimal places). Type your answer.

Problem 5. A carrier wave of frequency 20 MHz is frequency-modulated by a sine-wave of amplitude 2 volts and frequency 4 kHz. The frequency sensitivity of the modulator is 10 kHz per volt. a) Determine the approximate bandwidth of the FM wave using Carson's rule. b) Repeat part (a) assuming that the amplitude of the modulating wave is doubled. c) Repeat part (a) assuming that the modulation frequency is doubled.

Problem Amplitude modulation.,

What is the maximum transmission efficiency for amplitude modulation?