Choosing and installing antennas is an integral part of a successful WLAN
installation. It is important to understand the difference between directional
and omnidirectional antennas. Specifications for antennas may change, but the
underlying theory is the same.
This module also covered some basic
requirements of a site survey along with some safety issues to be aware of.
When dealing with WLANs, line of sight is not just a straight line between
antennas. Wireless line of sight must account for the Fresnel zone and might
have to adjust for Earth bulge.