We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations. Always consult with the appropriate authorities if you have questions concerning what is permissible in your locale.

Author Topic: Internet: Old TV caused village broadband outages for 18 months  (Read 2068 times)

Offline skeezix

  • Global Moderator
  • Marconi Class DXer
  • *****
  • Posts: 5791
  • Minneapolis, MN EN35
  • What does 'RNO stand for?
    • View Profile
https://www.bbc.com/news/amp/uk-wales-54239180

Wish they would've gone into the details a bit more... are Internet connections there that poorly shielded or was that old TV putting out a dangerous amount of RF?
Minneapolis, MN

Offline ThaDood

  • DX Legend
  • ******
  • Posts: 1384
  • Likely, not where you are.
    • View Profile
    • Extreme Part #15!
    • Email
Re: Internet: Old TV caused village broadband outages for 18 months
« Reply #1 on: September 23, 2020, 1821 UTC »
Huh??? Well, as much as I like Panasonic gear, they are known to be spurious generators, but what did this guy's TV have for FREQ crystals? Spark gap generators? I do remember in the mid-80's RX'ing the IF FREQ's from my parent's TV from +80ft away with a scanner. 
“I am often asked how radio works. Well, you see, wire telegraphy
is like a very long cat. You yank his tail in New York and he
meows in Los Angeles. Do you understand this? Now, radio is
exactly the same, except that there is no cat.”
-Attributed to Albert Einstein, but I ripped it from the latest Splatter .PDF March 2025 issue.

Offline JimIO

  • Sr. Member
  • ****
  • Posts: 491
  • QTH I.O. MA
    • View Profile
Re: Internet: Old TV caused village broadband outages for 18 months
« Reply #2 on: September 23, 2020, 2242 UTC »
Parasitics from the Line Output Valve over there, or the Horizontal Output Tube in 'merica.

~

Online Ray Lalleu

  • Marconi Class DXer
  • ********
  • Posts: 42050
  • Western part of France
    • View Profile
Re: Internet: Old TV caused village broadband outages for 18 months
« Reply #3 on: September 24, 2020, 2241 UTC »
Such a problem happens often here. The cable company delivers subscriber boxes with bad power supplies. When some component is blown, the PSU stills delivers power to the box, and he subscriber sees nothing particular. But the PSU then sends very strong harmonics of the switching frequency on the mains. It happened two times at my neighbours's (with strong QRN to MW and SW frequencies, which are also the frequencies of ADSL on the phone lines). The second time, there were many ADSL subscriber in the neighbourhood that lost access to Internet (I suppose those on the same phase of the power line). And that was 24 hours a day for several weeks each time! The cable company also is an Internet provider and gained new subscribers that way! Let your hardware jam the other companies using the phone wires!
D/E/F/G/It/Sp : Dutch/English/French/German/Italian/Spanish
+/- : about 0.02 offset, ++/-- 0.03/0.04 offset
Balanced wire antennas, wire lines and ATU
*** Semaines des ondes courtes, pages médias et technique, en français, demandez  les par message ici dans HFU ***

 

HFUnderground Mug
HFUnderground Mug
by MitchellTimeDesigns