{"id":24076,"date":"2020-09-22T09:19:44","date_gmt":"2020-09-22T08:19:44","guid":{"rendered":"https:\/\/www.ispreview.co.uk\/?p=24076"},"modified":"2020-09-22T10:17:06","modified_gmt":"2020-09-22T09:17:06","slug":"18-months-of-village-broadband-disruption-traced-to-old-tv-set","status":"publish","type":"post","link":"https:\/\/www.ispreview.co.uk\/index.php\/2020\/09\/18-months-of-village-broadband-disruption-traced-to-old-tv-set.html","title":{"rendered":"18 Months of Village Broadband Disruption Traced to Old TV Set"},"content":{"rendered":"

Residents in the tiny rural village of Aberhosan (Powys, Wales) have finally seen an end to 18-months of unusually slow and unstable broadband ISP connectivity after engineers, working for Openreach<\/a> (BT<\/a>), traced the source of the disruption to an old television set, which had been leaking electrical interference (SHINE).<\/p>\n

Openreach<\/a> initially concluded that the local connectivity problems were most likely to have been caused by some old cables, which after a wait were eventually replaced. Unfortunately, this didn’t resolve the problems and so they began sleuthing for electromagnetic interference with the aid of a spectrum analyser.<\/p>\n

Regular readers of ISPreview.co.uk will be aware that all sorts of electrical interference can cause disruption for older copper and aluminium (metal) based broadband lines, such as the ADSL<\/a> and VDSL2<\/a> (FTTC<\/a>) services that cater for Aberhosan<\/strong>. This was particularly common with older style twinkling Christmas Tree Lights, although faulty or poorly shielded AC power adapters have also been known to cause problems for entire communities.<\/p>\n

In this case Openreach<\/a> detected that, at around 7am every day, there was a sudden emission of Single Isolated Impulse Noise<\/strong> (SHINE) that caused interference for the spectrum frequencies being used by local DSL<\/a> services. SHINE most commonly occurs when a device is powered on or off, which causes a burst of interference and matching disconnections.<\/p>\n

Sadly SHINE may also result in slower speeds through Dynamic Line Management<\/strong> (i.e. DLM will automatically drop the line speed in pursuit of stability), if it happens regularly enough. In this case the problem was eventually traced to a local home and an old TV set, as well as one extremely embarrassed owner \ud83d\ude42 .<\/p>\n

Michael Jones, Openreach Engineer, said:<\/strong><\/p>\n

“As a team we\u2019d been facing an ongoing issue in Aberhosan for months. 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.<\/p>\n

As a final resort we decided to bring in a crack squad of engineers from the Chief Engineers Office who were based in other parts of the UK to investigate. Accommodation was understandably hard to find due to the Covid-19 lockdown but we did eventually manage to find a guest house with a field near Llandrindod Wells, so the team camped there and made the 55-mile journey to Aberhosan early the next morning.<\/p>\n

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 omitted from an appliance that can then have an impact on broadband connectivity.<\/p>\n

By using a device called a Spectrum Analyser we walked up and down the village in the torrential rain at 6am to see if we could find an \u2018electrical noise\u2019 to support our theory. And at 7am, like clockwork, it happened! Our device picked up a large burst of electrical interference in the village.<\/p>\n

The source of the \u2018electrical noise\u2019 was traced to a property in the village. It turned out that at 7am every morning the occupant would switch on their old tv which would in-turn knock out broadband for the entire village.<\/p>\n

As you can imagine when we pointed this out to the resident, they were mortified that their old second hand TV was the cause of an entire village\u2019s broadband problems, and they immediately agreed to switch it off and not use again.”<\/p><\/blockquote>\n

Accurately tracing problems like this can be extremely difficult, not least because the event itself may only occur for a brief moment once every day. On the other hand, this was a fairly small community and since the entire village was affected then we’re a bit surprised that it took 18-months to resolve. COVID-19 can probably take some of the blame for that.<\/p>\n

Correctly tracing problems like this tends to require expensive equipment, although localised interference issues within your home can often be identified by simply using an old AM\/MW radio and tuning it to the 612Khz<\/strong> frequency. You’ll find most devices give off noise patterns when in very close proximity (touching distance), but often the key is whether or not you can still hear that clearly when standing a couple of metres away (may cause problems for DSL<\/a>).<\/p>\n

Over the years we have found that all sorts of electrical devices leak more EM noise than would be ideal, which is one reason why we often recommend trying to position your router and master socket as far away from other non-network devices as possible (obviously this isn’t always possible). Mind you we also recently came across one router from TP-Link that had a surprisingly noisy AC power adapter, so you just never know.<\/p>\n

The good news is that future “full fibre<\/em>” (FTTP<\/a>) lines won’t suffer from the same problem because they send signals using laser light down optical fibre cables, as opposed to today where electrical signals over wires – made of highly conductive metals like copper or aluminium – can easily pick-up on EM interference in the same spectrum.<\/p>\n

UPDATE 10:15am<\/strong><\/p>\n

We’ve added Openreach’s full quote above. The operator has also informed us that the Aberhosan community will be connected to fibre later this year as part of their work with Welsh Government<\/a> to further expand the fibre broadband network in rural Wales.<\/p>\n","protected":false},"excerpt":{"rendered":"

Residents in the tiny rural village of Aberhosan (Powys, Wales) have finally seen an end to 18-months of unusually slow and unstable broadband ISP connectivity after engineers, working for Openreach (BT), traced the source of the disruption to an old television set, which had been leaking electrical interference (SHINE).<\/p>\n","protected":false},"author":1,"featured_media":24078,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[1],"tags":[36,69,71],"class_list":["post-24076","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uk_isp_news","tag-ofcom-regulation","tag-bt-openreach","tag-wales"],"share_on_mastodon":{"url":"","error":""},"yoast_head":"\n18 Months of Village Broadband Disruption Traced to Old TV Set - ISPreview UK<\/title>\n<meta name=\"description\" content=\"Residents in the tiny rural village of Aberhosan (Powys, Wales) have finally seen an end to 18-months of unusually slow and unstable broadband ISP\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ispreview.co.uk\/index.php\/2020\/09\/18-months-of-village-broadband-disruption-traced-to-old-tv-set.html\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"18 Months of Village Broadband Disruption Traced to Old TV Set - 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