User's Guide

• GLONASS
• BeiDou
•
GPS + GLONASS
• GPS + BeiDou
IMPORTANT:
Where the signals from satellites are not available, the GNSS Location Service does not work.
This situation usually happens when your radio cannot establish a view of a wide area of open
sky, for example, when the GNSS antenna is covered or facing the ground. Such situations
include being:
• In underground locations
•
Inside buildings, trains, or other covered vehicles
• Under any other metal or concrete roof or structure
• Near a powerful radio or television tower
• In extreme temperature outside the operating limits of your radio
Even if your location information can be calculated in such situations, it may take longer to do so.
Therefore, in any emergency situation, always report your location to your dispatcher. Where adequate
signals from multiple satellites are available, your GNSS Location Service feature provides a location,
most probably near to your actual location.
The radio can be triggered to send Location Reports in various circumstances, for example:
• Upon a request
• Entering Emergency Mode
• At specified time intervals
• At specified distance intervals
The Location Reports can be sent both in TMO and DMO by using:
• SDS messages
• Packet Data (in TMO mode only, with Packet Data enabled on the network by the service provider)
The radio can be configured to give audio-visual notifications upon sending the Location Reports.
Depending on the radio settings, viewing the radio position and the status of the visible satellites is
available. The position may consist of longitude and latitude, UK, or Irish grid coordinates.
5.6.1
Enhance GNSS Performance
Sometimes the GNSS feature is unable to complete a location calculation successfully. You hear an
audible tone indicating that your radio cannot see the satellites.
This feature works best where there is nothing between your radio and a large amount of open sky. To
maximize the ability of your radio to determine a location fix, avoid closed space, tall buildings, and
foliage. If possible, do not use this feature in underground parking lots, tunnels, under bridges, and
close to high buildings.
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Chapter 5: Features
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