# If the highest frequency modulating a carrier

Question:

If thehighest frequency modulating a carrier is $5 \mathrm{kHz}_{4}$ then the number of $\mathrm{AM}$ broadcast stations accommodated in a $90 \mathrm{kHz}$ bandwidth are

Solution:

No. of station $=\frac{\text { Band width }}{2 \times \text { Highest Band width }}$

$\Rightarrow \frac{90}{2 \times 5}$

$\Rightarrow 9$