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An audio signal of 2.8 kHz modulates a c...

An audio signal of 2.8 kHz modulates a carrier of frequency deviation of 56 kHz. Calculate.
(i) frequency modulation index (ii) frequency range of FM wave.

Text Solution

Verified by Experts

The correct Answer is:
` 84.0028 MHz abd 83.9972 MHz.`
Here, `v_m = 2.8 kHz, v_c = 84 MHz, delta = 56kHz.`
(i) Frequency modulation index = `m_f = delta/v_m = 56/2.8 = 20`
(ii) Frequency range of FM wave `= v_c+-v_m = (84+-2.8 xx 10^(-3))MHz`
`= 84.0028 MHz abd 83.9972 MHz.`
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