User's Guide

Table Of Contents
Site Survey
211
nas, it is not essential to maintain a free space path of 100%. Note that this chart does
not show ground cover objects, such as trees or buildings.
The next chart shows the same terrain with the same antenna heights, but it calculates
based on the recommended minimum limit of 60% (.6) free-space in the lower half of
the F1 zone. This graphically shows the minimum RF line of sight requirements for the
antennas.