A satellite transponder performs which functions?

A satellite transponder performs which functions?

• A. Receives, amplifies, transmits, and re amplifies analog or compressed digital signals
• B. Converts digital to analog
• C. Only receives
• D. Only transmits

Answer: (A)

A satellite transponder acts as a space-based RF repeater: it receives an uplink signal from a ground station, downconverts it to a different frequency, amplifies it, and then re-transmits it on a downlink frequency. This combination of receiving, boosting the signal, and re-transmitting (often at a different frequency) is what lets the signal travel long distances via the satellite. It can carry both analog and compressed digital signals, depending on the system, but it does not convert digital to analog by itself. It also isn’t limited to only receiving or only transmitting—the transponder handles both directions as part of the same channel.

A satellite transponder acts as a space-based RF repeater: it receives an uplink signal from a ground station, downconverts it to a different frequency, amplifies it, and then re-transmits it on a downlink frequency. This combination of receiving, boosting the signal, and re-transmitting (often at a different frequency) is what lets the signal travel long distances via the satellite. It can carry both analog and compressed digital signals, depending on the system, but it does not convert digital to analog by itself. It also isn’t limited to only receiving or only transmitting—the transponder handles both directions as part of the same channel.