In a radio communication system , a transmitter consist of
oscillator to generate carrier wave
modulator
Amplifier
All of the above
As we have learned
Transmitter -
A device which make an incoming message signal suitable for transmission through a channel and subsequent reception.
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Oscillator is used to generate carrier wave which carries the information during transmission
This carrier wave is modulated with the information during transmission
further an amplifier is used to increase the power of modulated signal so that it can transmit to long range
Oscillator modulator and amplifier all are housed in the transmitter it self
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