Question

An FM signal has a resting frequency of $105MHz$ and highest frequency of $105.03MHz$ when modulated by a signal of frequency $5kHz$. The carrier swing is

• A. $25kHz$
• B. $54kHz$
• C. $60kHz$
• D. $75kHz$

Answer 1

The correct option is C $60kHz$

Carrier Swing $=2\times \Delta f$
$=2\times 105.03-105=2\times 0.03MHz$
$=0.06MHz=60kHz$