Site preparation
99-145912-A Chapter 3: Installation 3-15
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. If radar interference is
suspected, or the antenna is placed inside the radar beam, configure the
radar to have a blanking zone to avoid transmission towards the
antenna.
GPS receivers
Good quality GPS receivers work properly very close to the ADU -
typically down to one meter outside the main beam.
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 3-13: Recommended distance to transmitters (m) for frequencies below
1000 MHz
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