Enhance Gnss Performance - Motorola MTP8500Ex User Manual

MN002033A01–AC (en-US)
Chapter 5: Features
• 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.
5.17.1

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.
To maximize the ability of your radio to determine a location fix please note the following guidelines:
• Stay in the open — The GNSS feature works best where there is nothing between your radio and a
large amount of open sky. If possible, go outside, away from tall buildings and foliage. While the
performance in a building is improved by moving closer to windows, glass with certain sun shielding
films may block satellite signals.
• Position your radio to enhance reception — Signals from GNSS satellites are transmitted to your
GNSS antenna, which is in your radio antenna. Hold your radio away from your body, giving the
antenna clear access to satellite signals. Do not cover the antenna area with your fingers or
anything else.
• Stand still — If possible, stand still until your radio is finished determining your location. Moving your
radio at a walking pace while your radio is calculating your approximate location may substantially
decrease GNSS performance.
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.
5.17.2
Location Report Backlog
The radio can record location track when it is out of service, when in DMO, or when in TXI mode.
The location reports generated during this time is stored, and all location report backlog recordings are
uploaded once the radio is back in service. Your radio can save up to maximum 180 location reports.
The location report backlog function differently when in different mode:
Location Backlog Recording in Trunked Mode Operation (TMO)
The radio starts recording location reports when radio is out of service in TMO Mode.
The radio resumes latest location reporting when TMO coverage is regained.
Location Backlog Recording in Direct Mode Operation (DMO)
The radio starts recording location reports in DMO Mode.
The radio resumes latest location reporting when it switches back to TMO mode.
NOTICE: This feature is only available when enabled by your service provider.
Location Backlog Recording in Transmit Inhibit Mode (TXI)
When the radio is in TXI mode, location reports are generated and recorded but not sent out.
Once the radio exits TXI mode and is within TMO coverage, the location reports are uploaded to
the server.
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