Question

A $1000\, kHz$ carrier wave is modulated by an audio signal of frequency range $600-6000 \,Hz$ . What is the bandwidth of the channel?

• A. $24\,kHz$
• B. $10\,kHz$
• C. $48\,kHz$
• D. $12\,kHz$

Answer 1

Answer: (D)

$12\,kHz$

Answer 2

Bandwidth $=2\upsilon_{m}$ (maximum frequency)
$=2\times 6 \times 10^{3}\,Hz$
$=12\,KHz$