User's Manual

Hardware Installation Guide Radio Site Planning
02030311-10 Airspan Networks Inc. 5-9
5.7. Radio Antenna Alignment
Once the subscriber unit (i.e. SPR/IDR) is installed and aimed in the general
direction of the BSR, it is recommended to measure the received signal strength
(RSS) to determine the signal strength received from the BSR, and to precisely align
the SPR/IDR for maximum signal strength.
You need to orientate (up/down, left/right) the SPR/IDR until the maximum RSSI
levels are achieved, and then secure the SPR/IDR. For short links you can expect an
RSSI of –60 dBm or better. For longer links, an RSSI of –75 dBm is acceptable.
Any RSSI of less than –80 dBm may be too weak for the radios to reliably
communicate.