Installation
Page 36
Figure 37 Junction box dimensions
Figure 38 Mounting the junction box
4.3.3 Installing the GNSS antenna
The AIS transceiver includes an internal GNSS receiver for time synchronisation. An independent GNSS
antenna is required for this receiver in addition to any GNSS equipment already installed on board.
For mounting of the GNSS antenna supplied with your AIS transceiver you will require a one inch 14 TPI pole
mount. Contact your dealer to source a mount suitable for the installation location.
Please note the following guidelines when selecting a location for the GNSS antenna:
● The GNSS antenna mount should be secured to a rigid surface.
● The GNSS antenna should be located where it has a clear, unobstructed view of the sky overhead.
● The GNSS antenna should be mounted as high as possible, however it is not recommend the antenna
is mounted on a top of a high mast where the motion of the vessel will cause the antenna to swing
and potentially reduce the accuracy of the GNSS position. See
Figure 39 for guidance.
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