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1.2 Antenna Unit
Refer to the antenna unit outline drawing at the back of this manual for mounting
instructions.
When selecting a mounting location consider the following points:
• Select a location out of the radar and Inmarsat beams. Those beams will obstruct or
prevent reception of the GPS satellite signal.
• There should be no interfering object within the line-of-sight to the satellites. Objects
within line-of-sight to a satellite, for example, a mast, may block reception or prolong
acquisition time.
• Locate the antenna well away from the antenna of a VHF radiotelephone to prevent
interference.
• Mount the antenna unit as high as possible. Mounting it this way keeps it free of
interfering objects and water spray, which can interrupt reception of GPS satellite signal if
the water freezes.
Note: If the antenna cable is to be passed through a hole in a bulkhead which is too small
to pass the connector, disassemble the connector with radio pincers and a monkey
wrench. After passing the cable through the hole assemble the connector as below.
Washer
Clamping Nut
How to assemble the antenna connector
Gasket
Shield
Pin (Solder.)
4
Housing
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