Question

The resting frequency of FM transmitter is $98.5$MHz. The allowed minimum and maximum frequency on either side of the centre frequency are respectively.

• A. $98.400$MHz and $98.600$MHz
• B. $98.450$MHz and $98.550$MHz
• C. $98.425$MHz and $98.575$MHZ
• D. $98$MHz and $99$MHz

Answer 1

The correct option is C $98.425$MHz and $98.575$MHZ

The resting frequency or center frequency of the FM transmitter is $98.5MHz=98500kHz$.

Maximum and minimum allowed frequency on the either side of the center frequency is

$f_c+f_m=98575kHz=98.575MHz$ and $f_c-f_m=98425kHz=98.425MHz$