Furuno 1712 - Manual (Page 7)

1
1. INSTALLATION
1.1 Antenna Unit
Installation
Mounting considerations
When selecting a mounting location for the
antenna unit keep in mind the following points.
• Install the antenna unit on the hardtop, radar
arch or on a mast on an appropriate platform.
(For sailboats, a mounting bracket is
optionally available.) It should be placed
where there is a good all-round view with, as
far as possible, no part of the ship’s
superstructure or rigging intercepting the
scanning beam. Any obstruction will cause
shadow and blind sectors. A mast, for
instance, with a diameter considerably less
than the width of the antenna unit, will cause
only a small blind sector. However, a
horizontal spreader or crosstrees in the
same horizontal plane would be a much
more serious obstruction; place the antenna
unit well above or below it.
Antenna unit
Antenna unit
Figure 1 Typical antenna unit placement on
sailboat
Antenna unit
Antenna unit
Figure 2 Typical antenna unit placement on
powerboat
• In order to minimize the chance of picking up
electrical interference, avoid where possible
routing the antenna cable near other
electrical equipment onboard. Also avoid
running the cable in parallel with power
cables.
• The compass safe distance of 1.25 meters
(standard compass) and 0.85 meters
(steering compass) should be observed to
prevent deviation of the magnetic compass.