RLX2 Industrial Hotspot Series
Page 190 of 212 ProSoft Technology, Inc.
June 15, 2015
Antenna Location, Spacing, and Mounting
Consider the following points regarding antenna location, spacing, and mounting:
When placing antennas, ensure a clear line of sight between the master radio's
antenna and all of the other radio antennas.
If the site base contains obstructing terrain or structures, mount the antenna on a
tower or rooftop to provide a line-of-sight path. The line-of-sight consideration
becomes more important as the transmission path becomes longer.
Mount the antennas as high off the ground as is practical. The higher an antenna is
above the ground, the greater its range.
Mount the antennas away from massive structures. Radio signals bounce off metal
walls, for example, which can compromise a clear signal.
Mount antennas to minimize the amount of nearby metal structures in the antenna
pattern.
Mount the antennas and install radios away from sources of RF interference.
Use the shortest possible antenna cable length. Signals lose power over the cable's
distance.
Choose antennas that are appropriate for the network's intended function.
If antennas are on radios on the same network, mount them so they have the same
polarity. If the antennas are on separate networks, mount them so they have a
different antenna polarity—for example, mount one antenna vertically and the
other horizontally.
Space radios at least three feet (one meter) apart so they do not overload each
other. If antennas must be near each other:
o Mount omnidirectional antennas directly above each other.
o Position directional antennas so they do not point at nearby antennas. Place
antennas side by side if they point in the same direction. Place antennas back to
back if they point in opposite directions.
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