The radio modules XT75 and XT65 are said to be especially suited for fleet management, vehicle positioning, navigation, emergency call or location-based services. The modules aim to allow the user to determine the exact location of persons, vehicles, goods in transit or end devices.

Location-related information can also be sent and called up via the mobile network, the company says. A car driver, for example, can load information on the nearest restaurant in a navigation system, or send an emergency SMS with position data, the company continues.

Fast satellite positioning is carried out via 16 parallel channels, using A-GPS data, the company says. The integrated TCP/IP communication protocol (TCP/IP stack) is designed to convert the A-GPS data into data packets, and then to transmit these via EDGE (XT75) or GPRS (XT75 and XT65) technology to the mobile network. Both modules are designed to send and receive on the frequencies 850, 900, 1800 and 1900MHz.

The XT75 can send data packets at up to three times the speed of ISDN, the company claims. The modules are 54mm x 39mm x 3,5mm in size, and are said to use various GSM & GPS energy-saving modes to minimise power consumption. The integrated RIL driver aims to ensure simple connection to end devices based on Microsoft Windows Mobile.

Thanks to Java support for the XT75 and XT65, programming all the applications is fast and easy for developers, the company says. The integrated processor and memory are designed to reduce the total cost of ownership and guarantee a shorter time to market. All standard sensors and actors can be linked via digital and analogue interfaces, the company adds.

According to Siemens Communications, all of its radio modules are manufactured in compliance with the EU directives on restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS).