Consumers worried that this will mean new set-top box equipment and yet more upheaval need not be alarmed, said Ofcom.

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Because tunnels block a radar signal, trains rely largely on hard-wired equipment like the box beside the track, which helps drivers and dispatchers talk to each other and controls a machinelike traffic signal, giving the drivers basic commands to stop and go.

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They break down contaminated equipment through a "glove box, " allowing them to disassemble the equipment a room away through lead-lined gloves.

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It said the fire damage was so extensive it was having to rebuild the box and associated equipment.

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Built in devices that can be downloaded automatically are listed on the website so you can see if all your equipment is supported out of the box.

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Black Box sells and installs communications equipment for businesses.

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Because of this close relationship, the two parties may settle up weeks later, frequently with traditional wire transfers or complex invoicing and trade schemes in electronics, farm equipment, commodities and gems (see box, p. 100).

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For customers lucky enough to already have a DVR box, the expense of new equipment has generally blocked upgrades to bigger, more powerful devices.

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With the Wireless 5x2 HD Matrix, businesses can eliminate the need for a second Blu-ray, cable box, game console or VCR and help streamline costs and space for equipment.

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