What kind of amateur radio station automatically retransmits the signals of other stations?

A repeater station is designed to listen on one frequency and automatically retransmit the received signal on a different frequency. This is typically done using high-gain antennas placed at elevated locations, which greatly extends the effective communication range of low-power mobile or portable radios. Distractors like 'Beacon station' are incorrect because a beacon only transmits a one-way continuous or periodic signal to help operators test propagation conditions; it does not retransmit other stations. A 'Remote-control station' simply allows an operator to control a transmitter from a different location, but does not inherently involve automatic retransmission.