good day. i am looking for a wifi antenna that will allow me to connect to another antenna on the other side of a building thats in the way. the offending building is the sanbel building in bellville near kuilsriver. as far as i can guess only the floors, support columns, bathrooms and lift shafts would be concrete. the walls would all be dry wall. a friend suggested that the 5ghz rocket mimo airmax from ubiquity might work. but the stockist says that although the antenna is good, its not that good. any help would be appreciated. thank you.