Cabletron Systems 802.11 manual Factors that can reduce antenna range, Large Reflecting Surfaces

Site Preparation Guide

Figure 3: Large Reflecting Surfaces

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Large storage tanks which are common in industrial areas

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. 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, other antennas, and the like seriously reduce efficiency of the antenna, it is very important to mount the antenna as high and clear of obstacles as possible.

Ensure that the cable between the antenna and lightning arrestor is at least 3 feet (0.9 meters) away from high-voltage or high-current cable.

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