You need a high-precision-grade GPS/GNSS receiver and antenna, either in the form of a standard “rover” or other receiver and antenna combinations. The receiver needs to be capable of using external corrections and can track at least GPS satellites or multiple constellations (e.g., combinations of GPS, GLN, GAL, BDS, etc.). To receive corrections from C4Gnet.XYZ, you will need internet connectivity, typically via a cellular connection. You will need field software that supports your GPS/GNSS hardware and supports NTRIP connections (for more details, see WHAT is NTRIP).

You must set that up with a cellular carrier directly (C4Gnet.XYZ does not do this) and use a modem or phone with a data plan. Some rovers have a modem built into the rover head, others have a modem in the field data controller, and other users work in an app on a phone. Some users prefer a portable WiFi “hotspot”, and connect their controller to it via WiFi, while others use their phone as a hotspot. You must have a data plan with a cell carrier in any scenario. Nearly all field software or apps for surveying/mapping are set up for NTRIP protocols. If it does not, there are free apps that can receive corrections and pass them to a receiver, but you will still need a cellular data plan. 

See WHAT is NTRIP