Garmin GPS 24xd Receiver and Antenna Installation Instructions - Page 4

Surface Mounting the Antenna, NOTICE

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Surface Mounting the Antenna NOTICE If you are mounting the bracket on fiberglass with screws, it is recommended to use a countersink bit to drill a clearance counterbore through only the top gel-coat layer. This will help to avoid cracking in the gel-coat layer when the screws are tightened. Before you permanently mount the antenna, you must test the mounting location for correct operation (Testing the Mounting Location, page 3). 1 Using the surface-mount bracket as your mounting template, mark the three pilot-hole locations and trace the cable-hole in the center of the bracket. 2 Set the surface-mount bracket aside. Do not drill through the bracket. 3 Use a 3.2 mm (1/8 in.) drill bit to drill the three pilot holes. 4 Use a 25 mm (1 in.) drill bit or hole saw to drill or cut the cable hole in the center. 5 Use the included M4 screws and a Phillips screwdriver to secure the surface-mount bracket to the mounting surface. If the included M4 screws are too short, use M4 screws of appropriate length. 6 Route the cable through the center hole, and connect it to the antenna. 7 Verify the large gasket is in place on the bottom of the antenna, place the antenna on the surface-mount bracket, and twist it clockwise to lock it in place. 8 Use the M3 set screw and a 1.5 mm hex wrench to secure the antenna to the mounting bracket . 9 Route the cable away from sources of electronic interference. 4

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Surface Mounting the Antenna
NOTICE
If you are mounting the bracket on fiberglass with screws, it is recommended to use a countersink bit to drill a
clearance counterbore through only the top gel-coat layer. This will help to avoid cracking in the gel-coat layer
when the screws are tightened.
Before you permanently mount the antenna, you must test the mounting location for correct operation (
Testing
the Mounting Location
, page 3
).
1
Using the surface-mount bracket
as your mounting template, mark the three pilot-hole locations and trace
the cable-hole in the center of the bracket.
2
Set the surface-mount bracket aside.
Do not drill through the bracket.
3
Use a 3.2 mm (
1
/
8
in.) drill bit to drill the three pilot holes.
4
Use a 25 mm (1 in.) drill bit or hole saw to drill or cut the cable hole in the center.
5
Use the included M4 screws and a Phillips screwdriver to secure the surface-mount bracket to the mounting
surface.
If the included M4 screws are too short, use M4 screws of appropriate length.
6
Route the cable
through the center hole, and connect it to the antenna.
7
Verify the large gasket
is in place on the bottom of the antenna, place the antenna on the surface-mount
bracket, and twist it clockwise to lock it in place.
8
Use the M3 set screw and a 1.5 mm hex wrench to secure the antenna to the mounting bracket
.
9
Route the cable away from sources of electronic interference.
4