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The GOTO Function
Use the GOTO function to navigate to a saved waypoint.
key then select List (fig 6) and press
1. Short press the
Enter. The waypoint list appears (fig 7).
2. Rotate the multi-function knob to select the desired
waypoint then press Enter. The View, Edit and Delete
options are listed (fig 8).
3. Press Exit repeatedly to return to normal operation.
4. Now long press the
appears (fig 9) showing the position details of your
selected waypoint along with navigational data such as
distance and bearing from your present position to the
waypoint. SOG (Speed Over Ground) indicates your current
speed. COG (Course Over Ground) indicates your current
heading.
WTP1
POS: 31°26.93562S
151°32.25530E
DISTANCE: 26.4
BEARING: 136°
SOG: 12 KITS
COG: 136°
UTC: 1354
Exit
Figure 9
To navigate to the waypoint, adjust your course so that your
COG matches the bearing to the waypoint. The distance will
get smaller as you move towards the waypoint.
Note:
If there are no waypoints saved in your radio, a long
press of the
key will give an error beep.
DIGITAL SELECTIVE CALLING (DSC)
The Digital Selective Calling (DSC) feature on your GX875
uses pre-formatted digital messages instead of voice to
transmit urgent or important information to another radio. In
times of an emergency, DSC can alert all radios within range
to a distress message even when a listening watch is not
being maintained. This increases the chances of your signal
being heard. DSC can also be used to make All Ships Calls,
Group Calls and Position Requests as well as routine calls to
individual radios. DSC is part of the Global Maritime Distress
G X 8 7 5
key. The navigation screen
Loop
Enter
Figure 9
and Safety System (GMDSS) which is expected to eventually
replace listening
watches on distress frequencies and will be used to announce
all routine and urgent maritime safety information broadcasts.
DSC AND GPS
DSC operation is enhanced by the in-built GPS receiver
in your GX875. By using GPS, your distress call can
automatically include your current position and time. If a
GPS position cannot be obtained, DSC calls can still be sent
and received to alert the operator of another vessel for
subsequent voice communication.
DSC calls are automatically sent and received on CH70. The
GX875 has two receivers, one of which is dedicated to CH70.
Therefore, regardless of which channel you are operating on,
the GX875 will not miss a DSC call.
USER MMSI (MARINE MOBILE SERVICE
IDENTITY)
A User MMSI is a unique 9-digit number used to identify a
DSC capable radio. An MMSI is used to selectively call other
vessels. Before you can use DSC, you must enter your User
MMSI number into the 'My MMSI ID' option in the DSC
Menu. If you don't yet have a User MMSI, please register
with your local Maritime Authority (AMSA in Australia – go
to http://www.amsa.gov.au/mmsi/ for more details and to
download an application form) who will then issue a unique
MMSI number.
Please refer to the 'My MMSI ID' option further below for
instructions on entering your User MMSI.
I N S T R U C T I O N M A N U A L
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