Rooftop Installation; Antennas For Outdoor Applications - Black Box LW0050A Manual

PRO 11 SERIES WIRELESS ETHERNET
window frames or metal film anti-glare windows in the transmission path. Install
outdoor antennas high enough to avoid any obstacles which may block the signal.
Minimal 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 exists a clear line of sight. The
number, location, size, and makeup of obstacles determine their contribution
to path loss.
• Antenna height. Path loss is lower when antennas are positioned higher.
Antenna height is the distance from the imaginary line connecting the
antennas at the two sites to "ground" level. "Ground" level in an open area is
the actual ground. In dense urban areas, "ground" level is the average height
of the buildings between the antenna sites.
5.3.2 R I
OOFTOP NSTALLATION
Rooftop antenna installations are extremely dangerous! Incorrect
installation may result in death, serious injury, and/or damage. Such
installations should be performed by professional antenna installers
only!
Rooftop installations offer several advantages:
• Increased antenna range.
• Fewer obstacles in path.
• Improved performance due to greater height.
• Reduced multipath problems.
5.3.3 A
NTENNAS FOR
The Pro 11 Series can be used in point-to-point or point-to-multipoint
configurations.
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WARNING!
O A
UTDOOR PPLICATIONS