An antenna system incorporating at least two antennas circumferentially arranged with a side-by-side relationship about a monopole tower. The main beam direction of the radiation pattern emanating from each antenna may be remotely adjusted in elevation and/or azimuth. The main beam direction of the radiation pattern emanating from adjacent antennas may be varied independently. The antennas may be partitioned in one or more vertically-spaced groups each of which is arranged about a circumference of the monopole tower.