User`s guide

Installation
2-9
Point-to-Multipoint
Setting up a point-to-multipoint link requires the use of a
Base Unit equipped with an omni-directional antenna (or an
antenna with sufficient bandwidth to illuminate all units)
and at least two remote units equipped with high-gain
directional antennas.
Antenna Polarization
Antenna polarization must be the same at both ends of the
link. In most applications, the preferred orientation is
vertical polarization, which is best for above ground
propagation. To verify antenna polarization, refer to the
assembly instructions supplied with the antenna set.
Antenna Seal
When using outdoor antennas, you must seal all cable
connections to prevent water or dirt from entering the
connector.
Cell Size/Link Distance
Cell size is determined by the maximum possible distance
between the BU-DS.11 and a RB-DS.11 unit. For open
outdoor areas with an unobstructed line of sight between the
BU-DS.11 and the RB-DS.11 units, the suggested maximum
distance is up to 6 miles (10Km) where ETSI is the regulatory
domain and 15 Miles (25 Km) where FCC is the regulatory
domain.