i am somewhat surprised that the Wikipedia article doesn't mention ham radio examples of phased arrays. A four square is four vertical antennas than be pointed

i am somewhat surprised that the Wikipedia article doesn't mention ham radio examples of phased arrays. A four square is four vertical antennas than be pointed electronically in four different directions. They are used generally on the 80 meter band where the dimensions of a regular beam and the tower heights required make them generally unacceptable to build. http://tm1o.free.fr/4SQ/80m/en_ver_final4-sq_03_04_15.pdf http://tm1o.free.fr/4SQ/80m/en_ver_final4-sq_03_04_15.pdf