Site preparation
98-148248-C Chapter 3: Installation 3-15
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placed inside the radar beam, configure the radar to have a blanking zone to avoid
transmission towards the antenna.
3.2.7.4 GPS receivers
Good quality GPS receivers work properly very close to the ADU - typically down to one
meter outside the main beam.
3.2.7.5 L-band antennas
If L-band antennas are installed on the same vessel, keep a minimum distance of 3 meters
from the SAILOR 600 VSAT Ka ADU to the L-band antenna.
3.2.7.6 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 3-16: Recommended distance to transmitters (m) for frequencies below
1000 MHz
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