What is the purpose of repeaters in radio communications?

The purpose of repeaters in radio communications is to extend the effective range of communication. Repeaters are devices used to receive a transmission and then retransmit it at a higher power or a different frequency, which allows signals to cover more distance than would be possible by a single transmission. This is particularly important in radio communication, as terrain features and distance can weaken signals.

By amplifying and re-broadcasting the signal, repeaters ensure that communication can occur over greater distances and in areas that might otherwise have weak or nonexistent signals, enabling clearer and more reliable communication over expansive areas.