Radio signals..............telephone signals..............cell phone signals...................u can listen to a stand alone radio..........in your house..........or use ur tv's antennae to pick up basic channels.............

Types of Satellites - How Satellites Work - Science

science.howstuffworks.com/satellite7.htm

Low-Earth orbits (LEO) — LEO satellites occupy a region of space from about 111miles (180 kilometers) to 1,243 miles (2,000 kilometers) above Earth.