From Popular Mechanics
A TV in Wales took down the local internet, making it a lesson about interference.
Shielded cabling and other tech helps protect signals, but this interference is unpredictable.
The ISP worked for months to figure out what regularly took down this network.
An embarrassed villager in Aberhosan, Wales, has learned their old TV has been messing up the entire village broadband connection. The cause—discovered by an engineering team from Openreach—is a burst of electrical activity called SHINE: single high-level impulse noise.
Older TVs, likely limited to only CRTs and prior unless something’s wrong with your wiring, experience an intense concentration of energy when you first power them on—you’d notice more resistance and an indescribable noise when you powered on these TVs. This, it seems, is what has plagued one ISP for months every morning around 7 a.m. Here’s how the engineers discovered the disturbance, according to Openreach.com.
“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 ‘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 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.”
All kinds of items we use in our homes are energy inefficient. Some people have up-to-date appliances or even just ones new enough to qualify for Energy Star, but that’s not the lived reality of many people. On top of that, cathode ray tube (CRT) TVs are popular