Site preparation
3-4
Chapter 3: Installation
98-136280-B
3.2.2
Obstructions (ADU shadowing)
Place the ADU so that it has as much free line-of-sight without any structures in the
beam through one full 360 degrees turn of the vessel. Do not place the ADU close to
large objects that may block the signal. To avoid obstruction elevate the ADU by
mounting it on a mast or on a mounting pedestal on a deck or deck house top.
The ADU is stabilized in 3-axis (plus skew) and can be used in environments with
elevations of -25° to + 125° to allow for continuous pointing even in heavy sea
conditions.
Any obstructions, such as masts, funnels, bridge house etc. within this field can cause
signal degradation or signal loss.
Figure 3-1: Signal degradation because of obstructing objects
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