The MODULATOR & TRANSMITTER
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For a message to be able to reach the
required destination is has to be sent out through a transmitter. The message
is converted into electrical signals and is modulator.
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The process of modulation is required
as the original message or signal is generally of a low frequency waveform,
and therefore has low energy. Thus modulation is the process of translating
the original signal to a higher frequency signals representing the original.
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The modulation process is done inside
a device called a Transmitter, whose function is to convert
the source signals to signals suitable for sending out.
INDEX