Furuno FELCOM250, Installation Manual

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1. HOW TO INSTALL THE UNIT
1-5
Antenna mast and mounting base
To get the best performance from the antenna electronics and mechanics, the anten-
na must be installed properly on a specially designed mast with suitable flange and
rubber gasket. Below are guidelines for installation of the mounting mast and mount-
ing base.
• The mounting base should be parallel to the ship's waterline (tolerance: ±3°).
• Weld a ground bolt of stainless steel to the mast (figure below). Connect the ground
wire from the antenna unit to the ground bolt.
6×
ø
8
Fixing Hole
ø
60 (
ø
2.36")
Cable Entry and Drain
110mm
(4.33"
)
200 mm (7.87")
200 mm (7.87"
)
254 mm (10")
320 mm (12.60")
254 mm (10"
)
320 mm (12.60"
)
HOLE
DIA 12 mm (0.47")
Approx. 100 mm (4"
)
Approx. 100 mm (4"
)
Thickness:
Minimum 10 mm (0.39")
ø
76.3
(f3.00")
ø
139.8
(
ø
5.50")
FELCOM 500 (FB-1500-A/C)
FELCOM 250 (FB-1250-A/C)
FELCOM 250 (FB-1250-B/D)
FELCOM 500
Minimum 20 mm
(0.79")
FELCOM 250
Minimum 10 mm
(0.39")
Thickness
Weld a ground bolt
M10x40 (same
direction of the
cable gland of
the antenna unit)
[Antenna mast: Example]
Weld an elbow pipe
for the cable entrance.
The inner diameter
should be larger than
the outer diameter of
the cable.
Don't seal with putty.
Make a drain hole at the
base of the pole.
[Antenna pole: Example]
Weld a ground bolt M6x40
[Mounting base] [Mounting base]