Setting Up Panel Directional Antennas, page
4
The antennas in the figure below are horizontally polarized:
•
Test different power levels.
CTI panel antennas add gain (power) to the broadcast
signal and also focus the radio energy directionally. Both effects tend to deliver more of
the radio signal to the desired target, so you may not need to operate your transmitter at
the highest setting. In some installations, system fidelity
may improve
at lower broadcast
power settings. In settings where more than one system is in use, lower broadcast power
settings will reduce inter-system interference.
Using Panel Antennas in Combination with Omni-Directional Antennas
Sometimes an installation will not lend itself to panel-to-panel antenna configuration, such as
a system in which there is a single transmitter broadcasting to receivers located far apart from
each other, so that the receivers could not all be within the beam angle of the transmitter’s
panel antenna. In setups like this, the system may still benefit from using panel antennas on
the receivers and an omni-directional antenna on the transmitter. Using panels on the
receivers will increase their range and limit their susceptibility to radio interference from other
sources located outside of the beam of their panel antennas.
Many of the same setup techniques will work with omni-to-panel antenna systems that work
with panel-to-panel systems:
•
Mount the antennas with direct line of sight
.
•
Adjust height and Rotation
to optimize performance
•
Avoid RF Obstacles
•
Elevate the antennas
above the ground, but leave clearance for other reflective surfaces
indoors.
