AT&T is using drones to help test and improve their Distributed Antenna System (DAS) networks at places like AT&T Stadium -- home to the Dallas Cowboys NFL Football Club. The company is using drones to help test and improve their Distributed Antenna System (DAS) networks. The “Echo Drone” can take key measurements on network performance and feed them in near-real-time to AT&T engineers. It also helps them conduct inspections and tests more quickly and safely. Without a drone, the testing process can take up to 5 days. AT&T engineers must walk up and down the entire stadium taking measurements. With an Echo Drone, AT&T can shorten this process to just 1 day. Drones, EchoBOT technology and DAS are just 3 of the tools in the next-gen network toolkit that AT&T is using to help provide a better wireless experience for football fans across the country.