User's Manual

Chapter 2 - Hardware Description Installation Preparations
Alvarion BreezeNET B130/B300 GigE 14 Technical User Manual
 Power lines
To obtain the best results, it is necessary to perform a precise analysis of a signal
propagation path zone and possible obstructions that may cover a part of the 1st
Fresnel zone (usually the analysis is performed at the highest points of the signal
propagation path).
General recommendation for antennas placement are the following:
 Install antennas as high as possible over specific level. In case of flat surface -
it will be ground level, in case of vegetation and forest - it will be tree heights,
in urban environment - it will be the highest building in the observed area
(specific level definition).
 Avoid tree and vegetation along with wave propagation path, influence of trees
can increase depending on seasons (ice, dew, leaves);
 Proximity of other antennas should be avoided (at least 2 meters);
 Reflecting surfaces should be considered (building with reflective windows,
water surfaces or wet grounds);
 When installing antenna over water surface, one should tune height bracket
within 1-3 meter range variation, because it can yield signal level variation
from minimum to maximum.
 If seasonal changes influence on the signal quality, so then the most probable
reasons would be either the connectors are not protected enough from
humidity, summer vegetation or ice covered cabling and connectors during
winter.
2.3.3 Antenna Poles Usage
Antenna installation is performed on a special facility called antenna pole. The
pole is used for strong antenna tightening at the installation site. Poles might have
different modifications depending on the installation requirements.
NOTE
While planning, it is strongly recommended to consult high-qualified and experienced technicians