Amateur radio is a wide field full of interesting communication systems to play with. Communications systems, however, only work when there are people that want to communicate. When any group of people communicate, regularly, a community of sorts is formed. This year, we will be focusing on the technical and social aspect of an amateur radio repeater network. The talk will explain how an amateur radio repeater works, and briefly how a repeater network operates. Additionally, this talk will cover some of the various communities that I interact with while working on repeaters. If time permits, some discussion of packet radio will happen.