Explain Why Modulation Is Required?

1.	Explain Why Modulation Is Required?
Answer» When we want to transmit electrical SIGNAL over an ANTENNA, through free space, it must be converted into electro-magnetic waves. Only electro-magnetic waves have the property to travel through space (vacuum) at the speed of light MESSAGE signal or voice signals have low frequencies. Signal with low frequencies cannot travel longer distance. To MAKE msg signal or voice signal travel longer distance. To increase the signal to noise RATIO.

Answer»

When we want to transmit electrical SIGNAL over an ANTENNA, through free space, it must be converted into electro-magnetic waves. Only electro-magnetic waves have the property to travel through space (vacuum) at the speed of light MESSAGE signal or voice signals have low frequencies.
Signal with low frequencies cannot travel longer distance.
To MAKE msg signal or voice signal travel longer distance.
To increase the signal to noise RATIO.

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