Garmin 190-01030-02 Manuale Utente

1.  Use the surface-mount bracket as your mounting template.

Use a pencil to mark the three screw locations on the surface and to trace the cable hole 

in the center of the bracket.
Set the surface-mount bracket aside. Do not drill through the surface-mount bracket.

2.  Drill three 

1

/

8

 in. (3 mm) pilot holes.

  Note: If you are mounting the GXM 51 on fiberglass, it is recommended to use a countersink 

bit to drill a clearance counterbore through the top gelcoat layer (but no deeper). This will help to 

avoid cracking in the gelcoat layer when the screws are tightened.

3.  Use a 1 in. (25 mm) hole saw to cut the cable hole in the center.
4.  Use the included M4 screws to attach 

the surface-mount bracket to the 

mounting surface.

5.  Route the NMEA 2000/audio cable 

through the 1 in. (25 mm) cable hole 

and connect it to the GXM 51.

6.  Make sure the large gasket is in 

place on the bottom of the GXM 51 

antenna, place the antenna on the 

surface-mount bracket 

➊

, and twist it 

clockwise to lock it in place 

➋

.

7.  Secure the antenna to the mounting 

bracket with the included M3 set 

screw 

➌

.

8.  Route the NMEA 2000/audio cable 

away from sources of electronic interference, and connect it to your NMEA 2000 network 

and to the audio input of your stereo receiver (see 

With the pole-mount adapter attached to the GXM 51, you can install the GXM 51 on a 

standard 1 in. OD pipe-threaded-pole marine mount (14 threads per inch—not included). You 

can route the NMEA 2000/audio cable either through the pole or outside the pole.

1.  Route the NMEA 2000/audio cable through the pole-mount adapter, and place the cable in 

the vertical slot along the base of the pole-mount adapter.

2.  Thread the pole-mount adapter onto a standard 1 in. OD pipe-threaded-pole marine mount 

(14 threads per inch—not included). Do not overtighten the adapter.

3.

  Connect the NMEA 2000/audio cable to the 

GXM 51 antenna.

4.  Place the GXM 51 antenna on the pole-mount 

adapter 

➊

 and twist it clockwise to lock it in 

place 

➋

.

5.  Secure the antenna to the adapter with the 

included M3 set screw 

➌

.

6.  (Optional) With the GXM 51 installed on the 

pole mount, fill the remaining gap in the vertical 

cable slot with a marine sealant (not included).

7.  Attach the marine mount to the boat if it is not 

already attached.

8.  Route the NMEA 2000/audio cable away from 

sources of electronic interference, and connect 

it to your NMEA 2000 network and to the audio 

).

•

•

➊

➋

➌

➊

➋

➌

➊

➋

➌

➊

➋

➌