Alvarion BreezeNET B System Manual page 67

Chapter 3 - Commissioning
5 Ensure that the front of the antenna is always facing the location of the BU.
However, in certain conditions, such as when the line of site to the BU is
hampered, better reception may be achieved using a reflected signal. In this
case, the antenna is not always directed toward the BU.
Secure the unit firmly to the pole.
6
7 You may need to repeat the process at the side of the BU (by using the Link
Quality Indicator in Telnet).
NOTE
In some cases, the antenna may need to be tilted to ensure that the level at which the RB receives
transmissions from the BU (and vice versa) is not too high. As a rule of thumb, if the RB is located at
a distance of less than 300 meters from the BU, it is recommended to up-tilt the antennas by
approximately 10° to 15° . To guarantee a safety margin from the saturation level, the SNR should
not be higher than 50 dB. The orange LED of the SNR bar indicates that the SNR is higher than 50
dB.
BreezeNET B 43
Aligning the Antennas
System Manual