Site considerations
98-175666-C
Chapter 2: Installation
2-15
Good quality GPS/GNSS receivers will work properly very close to the ADU - typically
down to one meter outside the main beam.
If L-band antennas are installed on the same vessel, keep a minimum distance of 3
meters from the SAILOR XTR GX-R2 ADU to the L-band antenna.
The following figure shows the minimum recommended distance to other transmitters
in the frequency range below 1000 MHz.
2.2.5 Condensation and water intrusion
In some weather conditions there may occur condensation inside the radome.
1. If possible, install the radome in such a way that direct spray of seawater is
avoided.
2. Make sure the ADUʼs drain tube is open and that there it free space between the
drain tube and the mounting surface so water can escape from inside the radome
and there is ventilation for the ADU.
3. Do not use pneumatic tools for cleaning the radome, especially at a short distance
and directly at the split between top and bottom.
4. Do not place the ADU close to a funnel, as smoke deposits are corrosive.
Furthermore, deposits on the radome can degrade performance.
Figure 2-13: Recommended distance to transmitters (m) for frequencies below 1000 MHz
Figure 2-14: Drain tube with free space
Free space
