Wireless router interference?

Discussion in 'Computer Corner' started by borrowers, Apr 19, 2008.

  1. borrowers

    borrowers Gardener

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    Hi all

    As you will know from previous posts i have recently got a wireless router to enable me to use laptop in any room.

    I noticed bad signals on TV when i had this on, but now it is seeming to affect the TV next to me in 'pc' room. The wireless router comes on when main plug is switched on, which does pc, printer, cable, tv & digi box.

    I have never noticed the bad signal in this room before though. Could this be due to 'freeview'? I can swap to 'analogue' tv for some channels sometimes if neccessary. What is going to happen when 'digi' is the norm though?

    Any help much appreciated. You know i'm a dumb nut when it comes to anything so 'easy' language would be appreciated.

    Sarra, Pal, Imps et al.....have another laugh :D

    cheers
     
  2. pete

    pete Growing a bit of this and a bit of that....

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    Cant help with your problem as such, but you asked what happens when digi TV is the norm.

    That bothers me as well, as at the moment I consider digital TV to be total rubbish.
    Analogue is much more reliable and works, digi ****.
     
  3. Dave W

    Dave W Total Gardener

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    I'd be very surprised if the interference with the TV was coming in to the TV antenna as a radio frequency signal.
    Wireless routers work on microwave frequency (GHz - gigahertz) and digital/freeview TV works on ultra high frequency (MHz - megahertz).In radio terms these are miles apart. There is a very slight chance that your router is badly constructed and emitting a strong out of band signal, but if it's a reputable make this is unlikely.
    You've not said where your TV antennas are located. Are they out doors or are you using an indoor antenna? In the latter case there is a possibility of a weak, out of band signal from the router swamping an even weaker signal picked up on an indoor antenna.
    If your TV and router are connected to the same mains socket, if the router generates weak out of band signals they can get into the TV (or more likely, digi-box) via the mains lead. A filtered adaptor or even winding the mains lead to the router round a ferrite ring may help eliminate this.
    Digital reception is less prone to disruption due to radio frequency 'interference' than analogue reception. I make radio tranmissions at powers several hundred times greater than a wireless router and when we used analogue TV I had to fit special filters all over the place (including on the phone in the cop shop next door!). Now we are on digital all I use are mains filters.
     
  4. borrowers

    borrowers Gardener

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    Thanks for comments all.

    Pete, i have to say i agree with you. And..one of the annoying things is that digi can change it's mind about what it's showing. we had a couple of channels at first that are now 'not broadcasting'. A couple of channels come on. One make of digi box has different information to the other. I don't think its fair to make everyone have this. Not until it's all sorted & all free.

    Dave W, i don't know the answers to half the questions you ask but i'll try to shed some light.. I have cable. I'm not sure whether the upstairs tvs are on outdoor or loft aerials. The tv reception by digi on BBC1 & 2 are unwatchable when i have my desktop on in this room(well you know which room i'm in don't you [​IMG] ) & when i'm on laptop in bedroom or living room. I have to put them on analogue to watch. All the other digi channels are ok.
    This didn't happen using computers till i got the router.

    Does that help? Suppose not, but i am trying (as you know :D )

    Thank you.

    cheers
     
  5. Dave W

    Dave W Total Gardener

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    Is your desktop wired to the router or does it use wireless?
    Do any of your TVs work OK with no interference - if so which ones?
    Do you only have one digi-box feeding all the TV's?
    You say you have cable - is this providing your TV and and your internet?
    Try your laptop on mains and then battery (with the mains plug out of it). See if it makes any difference.

    Sorry no answers - only questions.
     
  6. borrowers

    borrowers Gardener

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    Hi Dave, sorry for the delay.

    In answers to your questions:-

    Yes desktop is wired to router. Cable also wired to router-not sure if that's an obvious thing!

    With router on, the tvs downstairs work ok if i'm upstairs. If i am downstairs with laptop using wireless then the tv in the room is affected. Kitchen tv has no digi input so is not affected.

    We have two tv's upstairs with their own digi set top boxes, different makes. The tv downstairs has digi inbuilt(is there any such word as that, i keep using it).

    Yes, cable is supplying tv & broadband.

    Will try the battery option.

    Thanks for all your help.

    cheers
     
  7. Dave W

    Dave W Total Gardener

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    Thanks - that makes things slightly easier to understand.
    From what you've said it doesn't look like the 'interference' is coming from the router. My best guess is that it is the signal from your laptop to the router that is causing the problem or possibly some form of spurious radiation from the laptop and that this is being picked up by the digi-boxes or in the case of the TV with in-built digi, the in-built converter.
    Quite how to eliminate the problem is rather difficult. If you find that interference is less with the laptop running on battery I'd suggest fitting a ferrite filter (cheap) on the mains lead. There are other options, but they involve first checking the antenna connections on all the TVs. to ensure that the screen on the cable is properly connected.


    You've too many TV's anyway! :-)
     
  8. borrowers

    borrowers Gardener

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    Hi Dave W, i know, we are only basic at home though sounds alot of tv's but they are mostly old ones. I'm going to have to check things, ha ha. Thank you for your reply. I will look at it properly, tomorrow. You're a good mate. Thank you.

    Cheers i appreciate your answer, funny thing is for the last day it hasn't been going funny. Why is that? I'll let you know how things go.

    cheers
    Sandra
     
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