User's Manual

02/10/2012
© 2012 Meteorcomm LLC. All Right
Caution
consideration should be given to installing an external fuse
between the battery and MCC
4.1.3
Horizon Angle
To obtain maximum performance, the Remote Station
on level, flat ground to provide a good ground plane
ground plane can reduce link performance by a factor of two
Furthermore, the terrain in front of the antenna must be free of
buildings, bridges, and other obstructions
times the height of the antenna
present a problem if they are kept at least 20 feet (6 meters) from any
of the antenna elements.
The antenna generally does not require a tilt angle and can be mou
parallel to the ground
and obstructions exceeding 5
advantageous
.
recommendations.
4.1.4
Antenna Selection
Ante
nna selection depends on the type of network in which the MCC
545C is operating.
Vertical polarization is used in the FleetTrak
omnidirectional coverage to all adjacent nodes in the network
choice for a base station antenna is
two sides of a triangular tower
a data collection site.
Horizontal polarization is normally used in a Meteor Burst network
simplest antenna to use is a dipole, as shown in Figure
Yagi antenna (Figure 3.2) can provide an improvement in performance
by a factor from 2 to 4, depending on the number of elements used.
545C Operations Manual
Prerelease
hts Reserved.
Proprietary and Confidential. Do Not Distribu
Caution
: The MCC-
545C does not have an internal fuse and
consideration should be given to installing an external fuse
between the battery and MCC
-545C.
Horizon Angle
To obtain maximum performance, the Remote Station
must be installed
on level, flat ground to provide a good ground plane
.
Lack of a good
ground plane can reduce link performance by a factor of two
Furthermore, the terrain in front of the antenna must be free of
buildings, bridges, and other obstructions
for a distance at least 30
times the height of the antenna
.
Trees and other shrubbery do not
present a problem if they are kept at least 20 feet (6 meters) from any
of the antenna elements.
The antenna generally does not require a tilt angle and can be mou
parallel to the ground
.
In the case of very short ranges (200
and obstructions exceeding 5
 from horizontal, a tilt angle may be
.
Please consult MCC’s engineering department for specific
recommendations.
Antenna Selection
nna selection depends on the type of network in which the MCC
545C is operating.
Vertical polarization is used in the FleetTrak
TM
network to provide
omnidirectional coverage to all adjacent nodes in the network
choice for a base station antenna is
dual-
stacked dipoles mounted on
two sides of a triangular tower
.
A 10' whip is a good antenna choice for
a data collection site.
Horizontal polarization is normally used in a Meteor Burst network
simplest antenna to use is a dipole, as shown in Figure
3.1; however, a
Yagi antenna (Figure 3.2) can provide an improvement in performance
by a factor from 2 to 4, depending on the number of elements used.
545C Operations Manual
DCN 00001789-A
ibute.
23
545C does not have an internal fuse and
consideration should be given to installing an external fuse
must be installed
Lack of a good
ground plane can reduce link performance by a factor of two
.
Furthermore, the terrain in front of the antenna must be free of
for a distance at least 30
Trees and other shrubbery do not
present a problem if they are kept at least 20 feet (6 meters) from any
The antenna generally does not require a tilt angle and can be mou
nted
In the case of very short ranges (200
-300 miles),
 from horizontal, a tilt angle may be
Please consult MCC’s engineering department for specific
nna selection depends on the type of network in which the MCC
-
network to provide
omnidirectional coverage to all adjacent nodes in the network
. A good
stacked dipoles mounted on
A 10' whip is a good antenna choice for
Horizontal polarization is normally used in a Meteor Burst network
. The
3.1; however, a
Yagi antenna (Figure 3.2) can provide an improvement in performance
by a factor from 2 to 4, depending on the number of elements used.