Why is the uplink frequency higher than the downlink frequency in satellite communication?

Space

In a satellite communication, the uplink frequency and downlink frequency are not the same. The downlink frequency is much lower than the uplink frequency because it has a longer range and can transmit information from the ground station to the satellite without any obstruction. On the other hand, the uplink frequency is much higher because it has a shorter range and needs to travel through many obstacles like mountains and buildings before reaching its destination - the ground station.

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