Airmar WeatherStation 110WX Owner's Manual - page 10
10
Choosing the Mounting Location
For accurate readings and a reliable GPS signal, selecting the best location for the
WeatherStation Instrument is very important. Easy access and appearance should
be secondary considerations. Since each installation is unique, the best separation
distances will vary depending on the surroundings and the particular equipment and
how it is configured. Choose a location that balances the requirements below.
• The WeatherStation Instrument must be mounted in “clear air”, away from
obstructions in any direction that will interfere with air flowing through the unit. If
there is an obstruction, be sure to mount the WeatherStation Instrument at least
2m (6') away. On land, avoid obstructions such as roofs, chimneys, trees, etc.
• If possible, mount the WeatherStation Instrument higher than any other object.
Mount it a minimum of 500mm (20") above the surrounding surfaces.
Note that the higher the WeatherStation Instrument is mounted, the less accurate
the pitch and roll readings will be.
• To prevent interference to the internal magnetic compass:
- Mount a minimum of 1m (3') from any structures or equipment that contains
ferrous metals.
- Mount a minimum of 1m (3') from anything that may create a magnetic field
such as magnetized materials, electric motors, electronic equipment,
engines, generators, power/ignition cables, and batteries. For distances,
follow the respective manufacturer’s recommendations.
- Mount a minimum of 0.3m (1') from other standard and steering compasses.
• To prevent interference to the internal GPS (see Figure 2):
- It must have a clear view of the sky to receive satellite signals. A 120° view is
optimal. Check for any obstructions such as other boats or buildings.
- Mount it as far as possible from high-powered transmitting antennas to avoid
mutual interference.
- Mount it lower than any on-board Inmarsat communications antenna.
- Mount above or below any radar beam. Do not mount within a radar beam.
Min. 2m
antenna insulator
metal hull /deck
1.5m
Min.
Min. 2m
WeatherStation
Figure 2. Antennas
(Courtesy of Northstar BNT, Acton, MA)