At these power levels the power beaming array starts to look a lot like a weapon. One with a beam that can target distinct areas. Easy way to fry large amount

At these power levels the power beaming array starts to look a lot like a weapon. One with a beam that can target distinct areas. Easy way to fry large amounts of your adversarys telecoms infra. It will not put you back to the stone age, but 1970-1980 is not out of the question. For wireless communications that is.