Enterasys Networks 9033348-02 - Manual (Page 19)

Site Preparation 1-7
Determining the Antenna Locations
Other Factors That Can Reduce Antenna Range
Large reflecting surfaces that are parallel or partly perpendicular to the radio signal cause
reflections of the radio signal (see
Figure 1-3 ). Examples of reflecting surfaces are
buildings with low-emissivity (low-e) glass, crowded parking lots, water, moist earth,
moist vegetation, and above-ground power or telephone lines.
Because surrounding objects, such as trees, power lines, and other antennas, seriously
reduce efficiency of the antenna, it is very important to mount the antenna as high and clear
of obstacles as possible.
Figure 1-3: Large Reflecting Surfaces
Large storage tanks which are common in industrial areas
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