Question

Discuss any one alternative communication medium used in natural calamities.

Answer 1

Radio Communication : In disaster prone areas where normal telephone and as mobile phone networks become nonfunctional we need a reliable means of communication to send messages from one place to another. A well-established wireless radio communication system limited to its area, it is only effective service. Any wireless communication link relies on radio waves, whether it uses regional or satellite systems. Radio wave is electromagnetic, which is transmitted from one place to another by antena. Radio waves can be of low, high and extremely high frequency. By placing the radio receiver at a particular frequency. We can receive a specific signal.