Furuno FS-2570 - Manual (Page 12)

1-4
Grounding
Run a copper strap (supplied) between the ground terminal of the antenna coupler and the
ship’s superstructure.
Copper strap
Braze
Ground plate
(a piece of steel plate)
Weld to ship's structure
Solder
For outdoor installation,
apply a coat of paint to prevent rust.
0.4 x 50 x 600
Ground for metallic hull
1.2.3 Mounting considerations
The water-jetsproof construction of the antenna coupler permits installation either indoors or
outdoors. When selecting a location, keep in mind the following points.
Outdoor installation
•
Select a location not exposed to salt water spray. Salt water on the antenna insulator may
cause unstable operation of the coupler and in the worst case prevent transmission.
•
All wires from the coupler to the antenna radiate radio energy. They should be routed away
from any grounded conductors such as mast shrouds, or fittings.
•
For optimum radio energy, locate the coupler as near to the ground as possible.
•
The length of the vertical portion of the antenna should be as long as possible.
•
Leave enough space around the sides of the unit to permit maintenance and checking.
•
Total antenna length should be 7 to 30 meters.