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Getting signals across to train drivers
Operating railways safely has been of paramount importance since the earliest days of steam locomotion. How to ensure that a driver can not only see but act on a signal aspect has always been top of the list of requirements. Now radio is providing a means of reducing human failure as this story of US experiences shows.
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RF device 'sniffs' out illegal phones
Berkeley Varitronics Systems has released a handheld mobile phone detector fittingly called the Bloodhound that enables security officers to scan real time for unauthorised mobile phone activity in correctional facilities and detect the precise location of the caller using a direction-finding antenna.
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