world congress Versatile vehicle radio
Selex’s new mobile – with GPS, colour display and a hot-spot
every station is an IP node. “Above 30 base stations, for medium-
large systems, where you need usually to have a centralized call controller, we use this, which is basically an industrial PC on which we run the centralized call control. But it is not actually a switch in the traditional form because it doesn’t have any switching matrix for the audio. Te audio is routed directly from one base station to
M
aking its debut on the Selex Communications stand was a new 10-watt TETRA vehicle radio, the
ElettraSuite VS4000. “Tis is TEDS-ready, so as soon as we will have finalized the development of the software, which is due in October, more or less, it will support TEDS”, explained Francesco Pasquale. “What is new is that this has been directly derived from a software-defined radio concept. So, basically, 95 per cent of the components are totally frequency-independent. “Tis is the first TETRA radio that can go,
without changing anything, from 380 up to 470 MHz. Usually you have two sub-bands, but it can cover all of this. And then, by changing the power amplifier, you can go also up to the 800 MHz band.” Accompanying the radio is the new FPG3E
front panel, which is rugged enough (it is IP54- rated) for fitting to motorcycles and patrol boats. It includes a colour display and – a novel feature – an integrated Wi-Fi access point. “So you can realize, for example, in the immediate boundaries of a police car, a Wi-Fi hotspot, transferring images, pictures and so on to the mobile radio, and then through TEDS to the control room”, Mr Pasquale added. Te control head can even be installed at a
remote location, controlling the radio over a long-distance digital link.
Peer-to-peer TETRA On the infrastructure side, Selex introduced its TETRA IP node module, a cost-saving building block for new systems. Tis, too, is TEDS-ready. “Our new network solution is a full IP solution”, Francesco Pasquale continued. “Up to 30 base stations, it allows you to build a network without any switches – just peer-to-peer networking, and
38 another in a VoIP way.”
Train radio Also shown by Selex was another TETRA- enabled radio terminal, the Perseus WiNN Mobile V2. “Tis is basically a radio controller for on-board installation on Metro trains or other trains, buses and even police cars”, Mr Pasquale explained. “It has a TETRA radio embedded in the motherboard and then it has an additional board for various types of connections. It can support up to five other radio modules, such as Wi-Fi, UMTS, HSPA, WiMAX and so on. Tis can actually realize a multitechnology system. It supports ‘vertical’ handover: that means that it automatically chooses the best radio connection. It has LAN ports, USB ports, for integration with other on-board systems such as passenger information systems, video surveillance and so on.”
On show for the first time, a dual-mode satellite/TETRA pocket telephone prototype, demonstrated here by Dae Il Oh of Asia Pacific Satellite Communications
A sia Pacific Satellite Communication Inc (APSI), a
manufacturer of handsets for the satellite service provider Thuraya, was modestly showing what must surely have been one of the most innovative handset developments at the show – a prototype Thuraya/TETRA dual- mode phone. Dae Il Oh, APSI’s chief technical
officer and executive vice president, said: “Our satellite and TETRA dual- mode hand-held terminal is the only one of its kind and will have many important applications for emergency/ rescue services in remote regions.” He explained that his company had developed the phone using its own resources and without direction from Thuraya, but when it showed the prototype to the Dubai-based satcoms operator, it had been received with considerable excitement. The Thuraya satellite network
Selex’s train-proofed multi-mode radio for rolling-stock and other transport applications
provides voice and data coverage across some 140 countries, from Europe to the Far East and Australia. Thuraya claims now to have the largest subscriber base for mobile satellite handsets.
TE TRA TODAY Issue 4 2011
Reaching for the sky with a dual-mode radio
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