An anonymous reader writes: A village in the West Papua central highlands runs a telecom network out of a box latched to a tree. The network runs on open source. 'OpenBTS, an all-software cellular transceiver, is at the heart of the network running on that box attached to a treetop. Someday, if those working with the technology have their way, it could do for mobile networks what TCP/IP and open source did for the Internet. The dream is to help mobile break free from the confines of telephone providers’ locked-down spectrum, turning it into a platform for the development of a whole new range of applications that use spectrum "white space" to connect mobile devices of every kind. It could also democratize telecommunications around the world in unexpected ways.
... It is a 2G GSM system with two operating channels (GSM absolute radio-frequency channel numbers, or ARFCNs) in the 900MHz range, putting out 10 watts of signal power from an omnidirectional antenna. That gives the system a range of about five kilometers under ideal conditions, but in reality it averages about a three kilometer range because of vegetation and terrain (1.86 miles to 3.10 miles). The whole system is installed in a weatherproof box up a tree and draws less than 80 watts of power.'