Drone-Engage integrates with Ardupilot-based flight control boards. Drone-Engage can connect to these boards via Serial, Bluetooth, Wifi, USB, TCP and UDP connections.
The below video might be a record-breaking telemetry range for RC. In the following video you can see a car is being control in Cairo Egypt.driver is in Los-Angeles USA. Andruav 12,193 km RC Car Demo.
The first Video captured in USA
While the second is captured in Egypt
Both are the same exact video filmed from two places.
Although the video was made using Andruav at that time. Drone-Engage is even more capable and more optimized for this types of missions.