Furuno FS-1503 - Manual (Page 13)

1-6
1.3 Ground System
A good antenna can work well only when it is connected to an efficient rf ground. Without a
good ground system, the full potential of this radio cannot be realized.
Ground the equipment to
prevent electrical shock
and mutual interference.
CAUTION
Ground for metallic hull
Run a copper strap (option or local supply) between the earth terminal on the antenna coupler
and the ship’s superstructure. The length of the copper strap should be as short as possible. (If
the coupler is mounted on a metallic mast you can ground the copper strap to the mast; weld a
stainless steel bolt to the mast and connect the copper strap there.)
Copper strap
Braze
Ground plate
(piece of steel plate)
Weld to ship's superstructure.
For outdoor installation,
paint to prevent rust.
Solder
Figure 1-5 Ground for a metallic hull
Ground for non-metallic hull
Run a copper strap (option or local supply) between the ground terminal of the antenna coupler
and the radio ground system. The length of the copper strap should be as short as possible.
Grounding the transceiver unit
Run the ground wire (supplied) between the transceiver unit and ship’s ground, to prevent
interference and protect the equipment against lightning.