GPS Receiver Installation

To optimize performance of the GPS receiver, mount it in an area that has full exposure to the sky. The effective area of reception is 10° above the horizon.

Different circumstances determine the mounting method appropriate for your GPS receiver.

If you have…

Then use:

An antenna stem with standard 1” – 14 thread

Stem Mount with 1" - 14 Thread

Access under mounting location

Access Under Mounting Location

No access under mounting location

No Access Under Mounting Location

Stem Mount with 1” - 14 Thread

Receiver Head

Follow these steps to stem mount the GPS receiver:

 

1.

If you have a pre-existing stem mount, skip to step 2. If you

 

 

need to mount the antenna pole (stem), determine the best

Receiver

 

location, preplan and test the cable routing to your Fishfinder

 

unit before any drilling or cutting of your boat surfaces, then

Base

 

 

 

route the 20’ (6 m) cable to the desired mounting location.

 

 

Mark the location and drill a 3/4” (19 mm) hole for the cable

 

 

and cable connector. If you have purchased hardware to stem

 

 

mount your GPS receiver, follow the instructions included with

Antenna

 

that hardware to attach the stem to the boat.

Stem

NOTE: 10’ extension cables may be purchased from Humminbird® if

Stem Mount, Attaching

your planned cable route exceeds 20’ (6 m). Maximum cable length,

Receiver Base to Stem

including extension cables, should not exceed 50’ (16 m). Visit our

 

website at www.humminbird.com, or call our Customer Resource

 

Center at 1-800-633-1468 to purchase extension cables.

 

2.

Screw on the receiver base to the stem first, making sure

NMEA

Pigtail

 

that the stem pipe does not protude from the receiver base.

 

Taped

 

This adds protection to the cable when pulling it through

 

 

the pipe stem. In addition to this, deburr the pipe edges to

 

 

reduce cable abrasion.

NMEA

3.

Use electrical tape to secure the NMEA pigtail to the cable as

Pigtail

Cable Out

 

 

shown in the illustration.

NMEA Pigtail

Taped to Cable

4

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Humminbird GR16 manual GPS Receiver Installation, Access under mounting location, No access under mounting location