Enterasys Networks ROAMABOUT RBT-1602 - Manual (Page 19)

Determining the Antenna Locations
RoamAbout Antenna Site Preparation and Installation Guide 1-7
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