Site preparation
3-14
Chapter 3: Installation
98-136280-B
As long as receiving conditions are favourable, this limited degradation is without
importance. However, if receiving conditions are poor – e.g. due to objects blocking
the signal path, heavy rainfall or icing, low satellite elevation and violent ship
movements – the small extra degradation due to the radar(s) could cause poor
connection quality.
The presence of S-band radar(s) is unlikely to cause any performance degradation – as
long as the minimum distances (d min.) listed in the previous section are applied.
It is strongly recommended that interference free operation is verified experimentally
before the installation is finalized.
GPS receivers
Good quality GPS receivers will work properly very close to the ADU.
Other transmitters
See the following figure for minimum recommended distance to transmitters in the
frequency range below 1000 MHz.
CAUTION!
The ADU must never be installed
closer to a radar than “d min.” - even if
experiments show that interference free
operation can be obtained at shorter distances
than “d min.” in the previous section.
Figure 3-11: Recommended distance to transmitters (m) for frequencies below 1000 MHz
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