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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.
FELCOM 500 (FB-1500-A/C)
FELCOM 250 (FB-1250-A/C)
HOLE
DIA 12 mm (0.47")
254 mm (10")
320 mm (12.60")
[Mounting base]
Thickness
FELCOM 500
Minimum 20 mm
(0.79")
139.8
ø
(
5.50")
ø
[Antenna mast: Example]
FELCOM 250
Minimum 10 mm
(0.39")
Weld a ground bolt
M10x40 (same
direction of the
cable gland of
the antenna unit)
ø
(f3.00")
1. HOW TO INSTALL THE UNIT
FELCOM 250 (FB-1250-B/D)
200 mm (7.87")
6×
8
ø
Fixing Hole
[Mounting base]
Thickness:
Minimum 10 mm (0.39")
Weld a ground bolt M6x40
Weld an elbow pipe
for the cable entrance.
The inner diameter
should be larger than
the outer diameter of
76.3
the cable.
Don't seal with putty.
Make a drain hole at the
base of the pole.
[Antenna pole: Example]
60
(
2.36")
ø
ø
Cable Entry and Drain
1-5
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