Alvarion BREEZENET RB-DS.11 - Manual (Page 23)

Installation
2-7
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 10 km (6 miles) where ETSI is the regulatory domain and 25 km (15 miles)
where FCC is the regulatory domain.
NOTE:
The maximum distance of 25 km (15 miles) under FCC regulations is achieved using 24 dBi antennas
and 24 dBm output power. The maximum distance of 10 km (6 miles) under ETSI regulations is achieved
using 24 dBi antennas and –4dBm output power.
Using Outdoor Range Tables
Specific range tables, guidelines and information about extended cables can be
obtained from your local dealer or the Alvarion central offices.
Outdoor installations must have a clear line-of-sight between antennas. Large
obstacles such as buildings or hills can prevent the establishment of a link while
smaller obstacles such as trees or vehicles traffic can reduce range. Extended
coaxial cables can cause an increase in signal loss and a reduction in range.
Available Antennas
The following table lists several antennas suitable for BreezeNET DS.11 units.
TIP:
Cable length should be minimized in order to gain maximum link budget.
Model Ant. Gain Ideal for: Dispersion Dimensions
H x W x D
OMNI-8 8 dBi Establishing 360° coverage for outdoor
multipoint links. 360°H/13° V 20" x 5/8"
Tubular
UNI-16P 16 dBi Medium to long range outdoor links
requiring compact form factors. 28°H/28° V 11" x 11" x 3.5"
UNI-24
24 dBi Long range outdoor point-to-point
links. 6°H/10° V 24" x 36" x 15"
Table 2-1: Available Antennas