TV is murdering my wifi speeds

[WhiteEagle22]

A long story short, ive been trying to diagnose what is up with my wifi. Its been dropping to as low as 1-2mb in the furthest room from the router, and in the room with the router, its been 10-15mb slower than I would expect. And ive come to the conclusion its the TV. The TV is connected by ethernet, ive tried disconnecting it, and it makes hardly any difference, so I would assume its not hogging a great deal of bandwidth. But what I have noticed is, when the TV is on it kills the wifi speeds. When the tv is off, speeds are normal. So it must be interfering with the signal somewhere, somehow. Ive tried using wifi analyzser, and changed my channel to 13, which was recommended.

Any advice on resolving this ?.

I've included a few details below, if you need any more details please ask, i wasnt sure what else include, if anything.

TV
Samsung UE32J5500AK

Router
Sky Hub 2 (SR102)

ISP
SKY

Master Socket is a NTE5 (20 odd years old and doesnt have openreach on it). Router plugged directly into this via a filter.

Service - Fiber
38520 kbps downstream. Line Attenuation 23.0 dB. Noise Margin 5.9 dB
8697 kbps upstream.

Speeds im getting when everything is good
- Ethernet to router 35/36mb.
- Wireless in same room 30-35mb
- Furthest room from router 15-25mb

 

[kanewolf]

Do you have a wireless keyboard or similar connected to the TV? Those could be interfering.

Since most devices have to tolerate interference, the only option may be relocating your WIFI source.

 

[DeauteratedDog]

This is a bit of a long-shot, but a colleague of mine solved a wi-fi network problem where their TVs (used as information displays) were sending huge amounts of multicast traffic at 1 Mbps, occupying most of the channel capacity. I don't know the model or even brand of TVs.

If you have a radio that you can get into monitor mode, you might do a packet capture and see if anything like that is going on.

 

[WhiteEagle22]

Do you have a wireless keyboard or similar connected to the TV? Those could be interfering.

Since most devices have to tolerate interference, the only option may be relocating your WIFI source.

No nothing like that connected to the TV. Iphones have been used to occasionally connect to youtube, theyve been disconnected when not in use. I could try moving my router further away, but i dont think i've got any longer telephone cables at the moment to give it a go. I suppose i could move the TV further away, and connect it via wifi ? to achieve a similar thing ?.

Anything else to try ?

I've spoken to Samsung theyve told me to call Martin Dawes, and show them my receipt. The nearest store is like 20 miles away. Sounds as if im going to have to go through the usual diagnosis process, before they eventually say to me, take it back to who you bought it off for a refund or replacement. It cant be usual for such strong interference surely, is this just a faulty tv, or are all smart tv's prone to it ?. Any brands worse than others ?. We had a non smart Samsung tv previously to this one, no problems what so ever, the router was in the exact same place.

 

[WhiteEagle22]

This is a bit of a long-shot, but a colleague of mine solved a wi-fi network problem where their TVs (used as information displays) were sending huge amounts of multicast traffic at 1 Mbps, occupying most of the channel capacity. I don't know the model or even brand of TVs.

If you have a radio that you can get into monitor mode, you might do a packet capture and see if anything like that is going on.

How did they resolve it, did they resolve it, or just find out what the problem was ?. I havent got a radio, and wouldnt be sure how to go about doing that, id have to have a read up on it.

 

[kanewolf]

WIFI interference from a random RF source takes specialized hardware (spectrum analyzer) to troubleshoot. There is one reasonable prices device --http://dl.ubnt.com/newsletters/0112.html

 

[DeauteratedDog]

This is a bit of a long-shot, but a colleague of mine solved a wi-fi network problem where their TVs (used as information displays) were sending huge amounts of multicast traffic at 1 Mbps, occupying most of the channel capacity. I don't know the model or even brand of TVs.

If you have a radio that you can get into monitor mode, you might do a packet capture and see if anything like that is going on.

How did they resolve it, did they resolve it, or just find out what the problem was ?. I havent got a radio, and wouldnt be sure how to go about doing that, id have to have a read up on it.

If i remember the story correctly, a firmware upgrade to the TV fixed the problem.