A device mounted on a communication satellite which receives, amplifies and re-transmits signals from earth station is

A device mounted on a communication satellite which receives, amplifies and re-transmits signals from earth station is Correct Answer Transponder

A device mounted on a communication satellite which receives, amplifies and re-transmits signals from earth station is transponder. A transponder is typically composed of: an input band-limiting device (an input band-pass filter), an input low-noise amplifier (LNA), designed to amplify the signals received from the Earth station.
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