Ais Transponder Fa-50; Vhf Antenna - Furuno AIS Transponder FA-50 Operator's Manual

1.2

AIS Transponder FA-50

Mounting considerations, mounting
The FA-50 can be mounted on a desktop, deck or on a bulkhead. When selecting a
mounting location, keep the following points in mind:
• The temperature and humidity should be moderate and stable.
• Locate the unit away from exhaust pipes and vents.
• The mounting location should be well ventilated.
• Mount the unit where shock and vibration are minimal.
• Keep the unit away from electromagnetic field-generating equipment such as mo-
tors and generators.
• A magnetic compass will be affected if the FA-50 is placed too close to it. Observe
the compass safe distances noted in the safety instructions to prevent disturbance
to the magnetic compass.
Fix the unit to the mounting location with 4x20 self-tapping screws (supplied).
1.3

VHF Antenna

Location
The location of the AIS VHF-antenna should be carefully considered. Digital commu-
nication is more sensitive than analog/voice communication to interference created by
reflections in obstructions like masts and booms. It may be necessary to relocate the
VHF radiotelephone antenna to minimize interference effects. To minimize interfer-
ence effects, the following guidelines apply:
• The AIS VHF antenna should be placed in an elevated position that is as free as
possible with a minimum of 0.5 meters in the horizontal direction from constructions
made of conductive materials. The antenna should not be installed close to any
large vertical obstruction. The objective for the AIS VHF antenna is to see the hori-
zon freely through 360 degrees.
• There should not be more than one antenna on the same plane. The AIS VHF an-
tenna should be mounted directly above or below the ship's primary VHF radiotele-
phone antenna, with no horizontal separation and with a minimum of 2.8 meters
vertical separation. If it is located on the same plane as other antennas, the distance
apart should be at least 10 meters.
• Install the VHF whip antenna (option) referring to the outline drawing at the back of
this manual. Separate this antenna from other VHF radiotelephone antennas as
shown below to prevent interference to the FA-50.
1. INSTALLATION
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