Old TV set interfered with village’s DSL Internet each day for 18 months
Engineers traced interference with a spectrum analyzer. …
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A 400-resident village in Wales suffered 18 months of DSL Internet outages each morning until the culprit was identified as electrical interference from an old TV set.
The residents of Aberhosan mysteriously experienced the outages each morning at 7am. Openreach, a BT subsidiary that provides Internet service in the UK, replaced old cables in the village in an attempt to stop the outages.
“Unfortunately, this didn’t resolve the problems and so they began sleuthing for electromagnetic interference with the aid of a spectrum analyzer,” according to an article in ISPreview today. The article has a lengthy quote from Openreach engineer Michael Jones, who said, “Not being able to solve the fault for our customers left us feeling frustrated and downbeat, but we were determined to get to the bottom it.” Jones explained what happened next:
Having exhausted all other avenues, we wanted to do one final test to see if the fault was being caused by a phenomenon known as SHINE (Single High-level Impulse Noise) where electrical interference is emitted from an appliance that can then have an impact on broadband connectivity.
By using a device called a Spectrum Analyzer we walked up and down the village in the torrential rain at 6am to see if we could find an “electrical noise” to support our theory. And at 7am, like clockwork, it happened! Our device picked up a large burst of electrical interference in the village.
The source of the “electrical noise” was traced to a property in the
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