Amateur radio operators, or ‘hams’, often begin using the medium by communicating via local terrestrial repeaters, but some turn to pursuing communications via space-based repeaters.
There are numerous satellite repeaters accessible to ham operators, with most being in low-Earth orbit and more powerful military-operated repeaters in higher, geostationary orbit.
With a specialised antenna, ham radio enthusiasts can access a variety of signals from military activity to pirate radio and state-operated propaganda.
There are other types of repeaters in space that do not simply mirror terrestrial signals but provide unique services, such as some Russian satellites designed to provide coverage to the polar regions.
This hobbyist pursuit allows them not only to access unusual signals but also obtain unique locations of certain satellite signals for memorabilia and historical significance.