The goal of this article is to describe the development of a full system to control an Unmanned Air Vehicle (UAV) using a reliable air-to-ground wireless communication supported by Wi-Fi 3G/4G networks, allowing a full real time control on nonline- of-sight conditions. To achieve the main goal three applications were developed, one made for the operator which is a mobile application for a Tablet to control the UAV, another one for the UAV to be the brain of the aircraft and finally a communication system that includes a server and the communication protocol.

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