User's Manual

12
2.3 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 omnidirectional vertical
polarization be specifically tuned for marine 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.
Figure 3 VHF Antenna Locations
The VHF antenna connector type on WideLink B600 is SO239 which is designed to
work with a PL259 connector.
The recommended
horizontal distance
between antennas is 10m.
Other transmitting
antenna
VHF Antenna
2m
10m
Other VHF Antenna
The recommended
vertical distance between
antennas is 2m.