Asok Kumar Das and Chittaranjan Dasgupta Solutions for Chapter: Communication System, Exercise 1: EXERCISE 23

Give the frequency ranges of the high frequency band, 

Give the frequency ranges of very high frequency band (VHF), 

Give the frequency ranges of the following : (iii) Ultra high frequency band 

Give the frequency ranges of the Super high frequency band.

Why long distance radio broadcasts use short-wave bands? 

What should be the length of dipole antenna for a carrier wave of frequency of $6\times {10}^8 \mathrm{Hz}$?

A signal of peak value $5 \mathrm{V}$ at $10 \mathrm{k} \mathrm{Hz}$ is modulated using a carrier wave of peak voltage $10 \mathrm{V}$ and $2 \mathrm{MHz}$. The side-band frequencies are 

The maximum permissible value of the modulation index for an AM carrier wave is