BFW
Installation Guide
AN-30e & AN-50e Systems
Chapter
5
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Correct antenna alignment is essential in obtaining the maximum performance
from the wireless link. A misaligned antenna will decrease the receive signal and
can even result in a total loss of the RF signal. The antennas and ODUs must be
mounted and the IDU installed and configured before the antenna alignment can
be completed.
5.1
Basic Antenna Alignment
The alignment must be performed in both the azimuth and elevation planes. Since
the majority of links will have an elevation of 0º, the antenna can be set vertically
(to a close approximation) using a bubble level as shown in Figure 21 below. This
will eliminate one variable in the alignment process. This method is not accurate
where the elevation must be set to more than a few degrees up or down.
Figure 21:
Leveling Antenna Elevation Plane
Elevation alignment is accomplished by loosening the two bolts attached to the
mounting brackets.
The azimuth is aligned by loosening the four bolts on the antenna bracket and
rotating the antenna around the pole. A compass or GPS device can be used to
obtain the approximate azimuth direction.
For basic alignment using the actual received signal, all transceivers have an
alignment buzzer, and some later model transceivers have a test point for
70-00042-01-02
Proprietary Redline Communications © 2005
August
2005
Page 31 of 34
