question_answer

We do not choose to transmit an audio signal by just directly converting it to an e. m. wave of the same frequency. Give reasons for the same.                 

Answer:

                (i) Due to their low frequency ranges, audio signals radiated directly from an antenna die out after travelling some distance. (ii) Height of antenna required is impractically large. (iii) Audio signals transmitted from different stations get inseparably mixed up.