The concept sounds easy to duplicate, a so called "electro-magnetic cannon" which sends radio signals powerful enough to interfere with communications between a drone and its controller that then triggers the drone to automatically land but you probably shouldn't build one.  As with WiFi and cell signal disruptors, it are considered illegal for civilian usage, a pity for movie goers who would be far happier without the jerk in front of them talking on their phone during the main feature.  Battelle's gun has as range of 400 metres and if put into practice will prevent future incidents such as the recent grounding of waterbombers during a forest fire because numerous drones were occupying the air space in order to take pictures.  The drones would be unharmed and emergency services would not be interfered with.  Take a peek at The Register for more information, but stop those dreams of intercepting Amazon drones to see what they are carrying.

"US biz Battelle boasts it has found a way to rid our skies of annoying drones without breaking the flying machines' hardware."

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