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EE, the mobile operator owned by BT, has unveiled flying masts aimed at boosting coverage in remote locations, and keeping areas hit by natural disasters connected.
The air mast technology consists of mini mobile sites attached to balloons and drone-based devices to provide 4G signal in areas that prove challenging for traditional masts to reach.
Small cells are attached to a helium balloon - labelled a "Helikite" by EE - to transmit mobile signal where permanent sites have been damaged, or in areas where there is currently no 4G signal.
EE also demonstrated drones which are equipped...