14 |
Installation |
V5035 Operator and Installation Manual
VHF antenna installation
The quality and positioning of the antenna are the most important
factors dictating AIS performance. It is recommended that a VHF
antenna with omni directional vertical polarization be specifically
tuned for AIS operation band. Since the range of VHF signals is
largely decided by line of sight distance, the VHF antenna should
be placed as high as possible and at least 5 meters away from any
constructions made of conductive materials.
To avoid interference, the VHF antenna location should be placed
accordingly as diagram below:
Ensure a free 360° horizon with
a vertical observation of 5°.
The recommended
vertical distance
between antennas
is 2 m.
Ensure the GPS antenna is not
on the transmitting beam with
other high power transmitting
antenna.
VHF
antenna
Other VHF
antenna
The recommended
horizontal distance
between antennas
is 10 m.
High power transmitting antenna
The recommended hori-
zontal distance between
GPS antennas and other
antennas is 3 m.
Other
transmit-
ting
antenna
10 m
3 m
5°
VHF/GPS antenna locations
GPS antenna installation
The GPS antenna must be installed where it has a clear view of
the sky, so that it may access the horizon freely with 360° degrees,
with a vertical observation of 5 to 90 degrees above the horizon as
illustrated below.
Содержание V5035
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