Open Source Linux is changing lives in Zambia. MachaWorks uses Linux as it is free, easier to maintain and faster on older hardware. Packing crates become shelving, and giant antennae are stuck on the roof to connect these sites with the satellite uplink at MachaWorks, the parent organisation of LinkNet.

The wireless networking is done using standard Wi-Fi kit. An omni-directional high-gain antenna on top of a water tower blankets a 3km radius at the heart of Macha with network signal, while beyond that directional antennas extend the range point to point.

Wireless is preferred since it's easier to deploy and less vulnerable to damage from lightning. Plus second-hand 802.11g routers are easy to get hold of