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Site preparation
3-14
Chapter 3: Installation
98-166784-A
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.
L-band antennas
If L-band antennas are installed on the same vessel, keep a minimum distance of 3 meters
from the SAILOR 600 Viasat Ka ADU to the L-band antenna.
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