User`s guide

Installation
2-7
Path of Clearest Propagation
A propagation path is the path that signals traverse between
the antennas of any two units. The “line” between two
antenna sites is an imaginary straight line, which may be
drawn between the two antennas. Any obstacles in the path
of the “line” degrade the propagation path. The best
propagation path is, therefore, a clear line of sight with good
clearance between the “line” and any physical obstacle.
Physical Obstacles
Any buildings or other physical structures such as trees,
mountains or other geographic features higher than the
antenna and situated in the path between the two sites can
constitute obstructions and cause signal attenuation. Install
outdoor antennas high enough to avoid any obstacles, which
may block the signal.
Path Loss
Path loss is determined mainly by several factors:
♦ Distance Between Sites: Path loss is lower and system
performance better when distances between sites are
shorter.
♦ Clearance: Path loss is minimized when there is a clear
line of sight. The number, location, size, and makeup of
obstacles determine their contribution to path loss.