Site preparation
3-4 Chapter 3: Installation 98-137654-A
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
SAILOR100TM.book Page 4 Tuesday, January 29, 2013 2:44 PM
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