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Overview 9
Antennas
The MD400 has two built-in antennas and the MD400g has an additional GPS antenna.
1. Main - GSM/UMTS/HSPA (transmit and receive)
2. Diversity - UMTS and HSPA (receive only)
3. GPS - Global Positional System (MD400g only) (receive only)
Global Positioning System
The MD400g Mobile Broadband Modem contains a Global Positioning System (GPS) receiver. GPS
is a satellite-based navigation system made up of a network of 32 satellites orbiting the Earth. GPS
works anywhere in the world, 24 hours a day.
To access the GPS features of the MD400g, select View GPS in Wireless Manager. If you are
using other software, for example, supplied by your mobile operator, please consult the
documentation for that application.
GPS data is provided over the Sony Ericsson GPS Port. This is a Windows virtual COM Port. When
you install the MD400g, Windows will assign a number, for example COM23. To link a third-party
GPS-enabled application to your MD400g's GPS receiver, you may need to access the application
settings and select the COM port number that Windows has allocated. This is displayed in the GPS
main screen. To view the COM port information select View GPS. This information is also
available in Device Manager.
The data that the GPS device provides, is in Nautical Marine Electronics Association (NMEA)
format. This format is commonly understood by GPS-enabled applications.
For more information on GPS, refer to your Wireless Manager User Guide.
Network and subscription requirements
The network subscription you use in conjunction with your MD400 depends on the functions and
features that are available from your network operator. Contact your network operator or service