An assembly of mechanically steerable directional radio antennas, comprising a
primary antenna and at least one secondary antenna, arranged such that the or each
secondary antenna is capable of being physically steered over a limited azimuthal
arc relative to the primary antenna, and is at least partially within the swept
volume of the primary antenna. By allowing the swept volumes of the antennas to
overlap, a compact assembly can be provided, while by limiting the azimuthal movement
of the secondary antennas relative to the primary, it can be arranged that the
antennas do not foul each other.
