Each tri-sector antenna consists of three individual mobile communications antennas that are aligned to one another with an Azimut of 120° (standard alignment) in a slim, cylindric fibreglass housing. Since the antennas, amplifiers and connection cables are integrated in one housing/mast, the former appearance has been rearranged to a new type of mobile communications antenna. This archetype queues in the language of shapes of other urbanistic tubular elements (chimneys, vent pipes, lamp posts, flag masts etc.), and can thus be installed in any urban environment.