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6
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33-60-034-001_INST_GB_ radio receiver
judiciously. Figure 2 below describes the radio spectrum of the offset antenna. We observe that
wave reception is at its maximum perpendicular to the antenna, and lower towards the
extremities. Position the outside antenna so that the spectrum covers the deck of your ship as
much as possible.
We recommend the optimum configuration of installation below :
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The offset antenna is positioned horizontally and perpendicular to the axis of the boat.
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The offset antenna is placed at the centre of the area where the transmitters are used.
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The cable outlet of the offset antenna must run perpendicular to the antenna, over a length
of at least 30cm.
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The receiver housing and its antenna are positioned vertically.
Reception of the
antenna in vertical
position
Reception of the
antenna in horizontal
position
Figure 2
Note that scale of the radiation diagram is not representative ; it
only provides the shape of the spectrum.
866MHz radio spectrum of the offset antenna