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A mixer can be used for both up conversion and down conversion at the transmitter and receiver respectively.

A mixer can be used for both up conversion and down conversion at the transmitter and receiver respectively. Correct Answer True

At the transmitter, mixer is used to convert the baseband signal to a broadband signal with use of a high frequency local oscillator. At the receiver, a mixer is used to convert the received broadband signal to baseband signal using a local oscillator. This is called down conversion.

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