Alvarion BREEZENET BU-DS.11 ユーザーズマニュアル

 

 

 

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. 

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.  

 

Cable length should be minimized in order to gain maximum link budget. 

 

8 dBi 

Establishing 360° coverage for outdoor 
multipoint links. 

360°H/13° V 

20" x 5/8" 
Tubular 

16 dBi 

Medium to long range outdoor links 
requiring compact form factors. 

28°H/28° V 

11" x 11" x 3.5" 

24 dBi 

Long range outdoor point-to-point 
links. 

6°H/10° V 

24" x 36" x 15"