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Thread: Poor WiFi or OTA TV reception?

  1. #1
    Super Moderator Javaphile's Avatar
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    Exclamation Poor WiFi or OTA TV reception?

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    The culprit may be something in virtually everyone's home that you'd never think of.

    When my TV's OTA (Over The Air) signal suddenly went to cr*p on all 50+ channels I figured a neighbor has acquired some new piece of equipment that was generating some nasty RF interference. When that turned out not to be the case I started going going through my usual troubleshooting procedures. To make a long story short the culprit was a seldom used light fixture with a 3-way LED light bulb in it. Yup, an LED light bulb. Turn the light off and reception was perfect. Turn it on and all the channels disappeared.

    Thinking about it later a friend had been having issues with WiFi reception in their house with one particular device and no others. A device I knew there was an LED light sitting next too. I had them turn the light off and the connection speed went from 1 to 35Mbps. Turn the light back on and the connection speed immediately dropped back to 1Mbps. This was a standard 60w equivalent LED bulb, not a 3-way one.

    So, if you're having problems with poor signal strength or speeds with your OTA TV signals or 2.4GHz WiFi network (I've not tested the 5GHz band yet to see if it's affected.) try turning off all your LED lights and see if it improves. If it does turn the lights back on one at a time to see which one(s) are causing the problem. Try relocating them to eliminate the problem or simply leave them turned off when using the affected device(s).


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  2. #2
    Coffee Newbie okitoki's Avatar
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    good hint... Will check it out since I always have crap reception with Digital Channel 10 (or 10 related channels) so I have removed them from my list of channels.

    I am using roof antenna though so not sure if that would resolve the issue

  3. #3
    Mal Dimal's Avatar
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    Hmmm...

    Intriguing discovery JP.
    I've never really ever given it much thought but I guess some LED bulbs may be using inbuilt SM power supplies running at high frequencies with poor shielding.

    Will have do go around and check ours now...

    Mal.

  4. #4
    Senior Member CafeLotta's Avatar
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    Had heard that the cheapie LED lights are usually the culprits.

    This sort of covers it - https://reductionrevolution.com.au/b...o-interference

    As far as OTA digital TV signal issues, we suddenly started having them at one point a while back. Added a Kingray Edge masthead amplifier (signal booster) mainly due to additional antenna wall-plate connection points in the house but to top up signal strength too. Needed a Kingray FL3BPMH filter also to cut out some local interference we had. Never had any signal issues or pixellation since.

    https://www.gme.net.au/kingray.aspx?f=Amplifiers

    https://www.gme.net.au/catalogue/dip...s/fl3bpmh.aspx
    Last edited by CafeLotta; 1 Week Ago at 07:46 AM. Reason: Repaired link
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  5. #5
    CoffeeSnobs Owner Andy's Avatar
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    Good tip Java, I'll add LED lights into the thing to look for next time I'm scratching my head over WiFi signals.
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  6. #6
    Senior Member robusto's Avatar
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    A couple of weeks ago we finally agreed to have ALL our globes replaced, free, to LEDs. We have about 75 of them.
    The install tested by switching each one on/off as he went. No problems.

    We have a dimmer in the family room, and the installer assured us the new LEDs were dimmable.

    But next day, weird things started to happen.

    The 3 LED globes in the laundry down the passageway started blinking on and off in rotation.

    Then the ones in the adjacent bedroom joined in.

    Three of the guaranteed for 2 years LED globes in another room blew.

    The dimmer? I thought. Removed it altogether, still the merry LED dance.

    Replaced the dimmer with one which especially says made for LEDs...still it happens, whether the dimmer is on or off.

    Installer returned to replace the blown lights -- but of course the dancing ones behaved while he was there.

    It happens at random and I can't seem to replicate it at will to fathom what's causing it.

    Weird.

    PS: All the reception problems I have now and then with all my TVs are the result of the very poor connectors on fly leads -- into the TV, and into the wall plugs. I squeeze the female receptors with tiny pliers to make the connection with the male ones tighter. I really like the old way when the leads were secured with little bolts.
    Last edited by robusto; 2 Weeks Ago at 03:59 PM. Reason: Added a PS

  7. #7
    Super Moderator Javaphile's Avatar
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    I have little doubt that cheap LED's are the culprits. The 3-way here is certainly a cheap off brand one. The neighbors weren't sure what theirs were but it's a pretty safe bet they were also off brand.

    In re the article it sort of covers it, in a roundabout way. The article covers low voltage systems while the lights in use here are all mains powered. All those different components of the system they suggest replacing to fix the problem are, in the mains powered LED's, contained right in the LED bulbs themselves. So yeah, as above, I've little doubt cheap LEDs are the culprits.

    An amplifier as well as an appropriate filter and splitter can be very handy to have if you have a central antenna. I'd even say a requirement.


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  8. #8
    Senior Member robusto's Avatar
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    I'd guess that the LEDs in my home are probably the cheapest Chinese ones availliable. Most are 5 Watts, the larger 9 Watts. Next to nothing to run.

    Still, I'm thinking it was a mistake to have them put in, even if they were free.
    Most of the ones they replaced were compact fluorescents, also very cheap to run, and a couple of them 25 years old from when they first hit the markets.
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  9. #9
    Senior Member CafeLotta's Avatar
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    Quote Originally Posted by robusto View Post
    I'd guess that the LEDs in my home are probably the cheapest Chinese ones availliable. Most are 5 Watts, the larger 9 Watts. Next to nothing to run.

    Still, I'm thinking it was a mistake to have them put in, even if they were free.
    Most of the ones they replaced were compact fluorescents, also very cheap to run, and a couple of them 25 years old from when they first hit the markets.
    We run a few LED globes in the areas that are most used. A couple in the kitchen spots and a couple in the lounge. Checked up online and ended up using Crompton LED globes. Haven't had any issue with WiFi. The router is in a direct line between the non-dimmable LEDs and no issues.

    If you want to use dimmible LEDs the globes have to be a specific dimmible LED globe. You can't use a standard LED globe with a dimmer switch.

    https://www.power-supplies-australia...tch-led-lights

  10. #10
    Senior Member Yelta's Avatar
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    Just replaced a few QH down lights with cheap LED's from Bunnings, so far not so good, SOB's flicker during warm up, then turn off, seems when they cool down they come on again, frustrating.

    Seriously thinking of putting the QH's back in.

  11. #11
    CoffeeSnobs Owner Andy's Avatar
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    Slightly off-topic but sorta on topic too...

    At about midnight last night I turned on telly to watch the news on Digital "ABC News 24" and while we live a long way from the tower, we have some elevation (175m) and DTV is normally very good at home, we even get Traralgon and sometimes Tassie channels when doing a channel scan on a clear night.

    But last night News24 was digital pixel popping and dropping a word every 10 seconds, the cause? Smoke haze. It rolled in heavy like a fog on dusk last night and obviously contains enough carbon and stuff to screw the signal path. Obviously the further you are from the signal tower the more impact it will have and I doubt that metro Melbourne or Geelong would have gotten it but being another 30km out made a difference.
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  12. #12
    Super Moderator Javaphile's Avatar
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    Yup smoke, heavy clouds, high humidity, ash clouds, they can all cause issues with radio/TV signals, especially weak ones.


    Java "We don't need no steenkin' smoke!" phile
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  13. #13
    Mal Dimal's Avatar
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    Quote Originally Posted by Yelta View Post
    SOB's flicker during warm up, then turn off, seems when they cool down they come on again, frustrating.
    Most problems with LED bulbs are down to the power supply section of the bulb, not the LED itself. If components are not adequately supported or secured, they can become damaged during shipping. Would be best to return them to Bunnings and ask for replacements or maybe, better to get a refund and buy replacements elsewhere...

    Mal.
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  14. #14
    Senior Member robusto's Avatar
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    It makes you think twice whether you should buy a $6 LED or an 80 cent incandescent in the hope the LED will last long enough to recoup the greater outlay through power savings.

    Of course we have no choice. Incandescent are banned.

  15. #15
    Mal Dimal's Avatar
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    Name brand bulbs will be fine, as CafeLotta referred to above...
    The very small extra expense of mounting the hardware properly is usually what is missing from the 'cheapies' but brands like Crompton, Osram, etc do this properly.

    Mal.
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  16. #16
    Senior Member Yelta's Avatar
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    Quote Originally Posted by robusto View Post
    It makes you think twice whether you should buy a $6 LED or an 80 cent incandescent in the hope the LED will last long enough to recoup the greater outlay through power savings.
    It certainly does, at $10 each for name brand LED's, I suspect I will replace the quartz halogen lights and as Mal suggested, return the LED's to Bunnings.
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  17. #17
    Senior Member robusto's Avatar
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    Yelta, at least the halogens will warm the room in winter!! (A minus today though, 36 degrees out here)

  18. #18
    Senior Member Yelta's Avatar
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    Quote Originally Posted by robusto View Post
    Yelta, at least the halogens will warm the room in winter!! (A minus today though, 36 degrees out here)
    Fortunately we don't have them on during the day, another plus I have half a dozen spare Halogens.
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  19. #19
    Senior Member CafeLotta's Avatar
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    Quote Originally Posted by Andy View Post
    But last night News24 was digital pixel popping and dropping a word every 10 seconds, the cause? Smoke haze. It rolled in heavy like a fog on dusk last night and obviously contains enough carbon and stuff to screw the signal path. Obviously the further you are from the signal tower the more impact it will have and I doubt that metro Melbourne or Geelong would have gotten it but being another 30km out made a difference.
    Had the same thing happen a few years back with fires up in the Dandenong Ranges near the TV transmission towers. At times, the signal would totally disappear for long periods with some channels worse than others. Occasionally severe thunderstorms up there can have a similar effect. We pretty much have direct line of sight with the transmission towers and mostly 100% signal strength. The signal quality readout shown on the TV tuning utility drops sharply though during the really bad thunderstorms on Mt Dandenong.


    Quote Originally Posted by robusto View Post
    It makes you think twice whether you should buy a $6 LED or an 80 cent incandescent in the hope the LED will last long enough to recoup the greater outlay through power savings.
    For us in Melbourne, probably more about lessening demand on a power supply grid with little in reserve. Every really hot summer's day they warn of possible blackouts, especially since closing down Hazelwood Power Station without any realistic or practical replacement of any sort to take up the shortfall. Murmurs now of Yallourn also closing in the not to distant future once again without any sensible plans for a cost effective replacement. Gotta get those greenie votes.

    As far as name Brand LED globes and ones that don't cause interference, the local suburban specialist lighting stores should be able to point people in the right direction. There's also a fair bit online about brands to buy to avoid issues.
    Last edited by CafeLotta; 1 Week Ago at 07:50 AM.
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