Generally speaking you should have an unobstructed line of site to the
other end of the link. Think of WiFi as being a light beam.

Work out the path loss based on the basic distance formula and plug your
power, losses and RX sensitivity in to determine your margin and thus
max range. Radiomobile and/or UKWtools can be used for this and some
allowance for terrain as well.

Cheers Bob VK2YQA

wrote:

is.. How high should my tower be for my vertical sector wifi antenna?