Build your own receiver
(Raspberry Pi + RTL-SDR + dump1090)

Building your own radar is cheap and simple! You can build your own home radar to receive and view air traffic on your computer in real-time for as little as 50$. With this cheap setup, you can track air traffic with ranges of up to 600km (depending on your environment and antenna installation). Don't worry if you are a beginner, setting up the receiver and software is pretty straight forward. There are plenty of manuals around and we recommend starting with the following links

As soon as your receiver is up and running, showing aircraft on the map, you can start feeding data to the OpenSky Network.

Get a free receiver

Some organizations and individuals want coverage in their area but cannot install a receiver, for example due to bureaucracy or housing restrictions. On the other side, many people would host a receiver at their home, company, or institution if the hardware comes for free. We bring these two groups together with our sponsoring program. It allows people who are willing to host a free receiver to offer their site while everyone who wants coverage in that area (or simply wants to support our project) can sponsor the site by making a donation. The OpenSky Network Association will take care of the rest.

So you want coverage in your area but you do not want to buy or build a receiver? Then apply for hosting a free receiver for us or someone else! The only requirements are 24/7 Internet access (Wifi or LAN) and power supply, and the possibility to install the antenna outdoors with a good line of sight in all directions. If you meet all these requirements, apply here for becoming a host of a sponsored receiver.