News from the BBC of a SHINE (single high-level impulse noise)[*] that interfered with a Welsh village's internet connection on a daily basis.
The mystery of why an entire village lost its broadband every morning at 7am was solved when engineers discovered an old television was to blame.
[...] After 18 months engineers began an investigation after a cable replacement programme failed to fix the issue.
[...] Openreach engineers were baffled by the continuous problem and it wasn't until they used a monitoring device that they found the fault.
The householder would switch their TV set on at 7am every morning[sic] - and electrical interference emitted by their second-hand television was affecting the broadband signal.
The owner, who does not want to be identified, was "mortified" to find out their old TV was causing the problem, according to Openreach.
"They immediately agreed to switch it off and not use it again," said engineer Michael Jones.
While some properties in the surrounding area have Fibre to the Premises, several homes in the Aberhosan area are still limited to using copper-based ADSL connections.
[*] Broadband: Understanding REIN and SHINE.
(Score: 3, Interesting) by anubi on Thursday September 24 2020, @02:25AM
I have seen this in my high school days working as a TV repair tech in the sixties...
https://duckduckgo.com/?q=barkhausen+oscillation+horizontal+output+tube [duckduckgo.com]
Lots of UHF emission from the stub of wire leaving the horizontal output tube to the horizontal output transformer.
The tube itself could operate at far higher frequencies, and some of them did. The magic of resonance. Wire inductance and parasitic capacitance. Would emit all sorts of chaotic noise, excited by the flyback pulse.
"Prove all things; hold fast that which is good." [KJV: I Thessalonians 5:21]