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    So whats a good attenuation and noise margin?

    This is a discussion on So whats a good attenuation and noise margin? within the Sky Broadband (Fibre) Help forums, part of the Sky Broadband help and support category; Had mine installed last week. Connects at 40Mb (but only getting 25Mb). See attachment. Seems a bit high?...

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      psychocandy's Avatar
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      So whats a good attenuation and noise margin?

      Had mine installed last week. Connects at 40Mb (but only getting 25Mb).

      See attachment. Seems a bit high?
      Attached Thumbnails Attached Thumbnails So whats a good attenuation and noise margin?-routerstats.jpg  
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    3. #2
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      Re: So whats a good attenuation and noise margin?

      Nothing wrong with your stats, in fact they show you could get much more if you opted for Pro. Make sure your neighbour is not using it when you do your speed tests.

      It appears you are using mainly wireless, try checking your speed with ethernet. You should get 37-38mbps, when the exchange is not busy.

      TomD


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      Re: So whats a good attenuation and noise margin?

      Quote Originally Posted by Isitme View Post
      Nothing wrong with your stats, in fact they show you could get much more if you opted for Pro. Make sure your neighbour is not using it when you do your speed tests.

      It appears you are using mainly wireless, try checking your speed with ethernet. You should get 37-38mbps, when the exchange is not busy.
      Thanks. Test was done on PC using powerline adaptors (aware that these can be problematic)
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      Re: So whats a good attenuation and noise margin?

      Added a new BT faceplate. Noise margin has increased a little.

      Is increased noise margin better?
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      Re: So whats a good attenuation and noise margin?

      Quote Originally Posted by psychocandy View Post
      .................

      Is increased noise margin better?
      Yes, the higher noise margin shows there is less interference on the line, so allowing a higher speed.

      TomD


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      Re: So whats a good attenuation and noise margin?

      These are my stats which I don't fully understand in terms of noise etc... But think I should be getting a higher speed. When I signed up they said should get 34.3meg but getting around 25meg on speed tests.

      So whats a good attenuation and noise margin?-image.jpg

      I have installed vdsl mk2 faceplate and cat5e cable from faceplate to router and this got it to 25 from 20... Is there any point ringing Sky or is this likely to be as good as it gets?

      Any help or advise would be great... Thanks

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      Re: So whats a good attenuation and noise margin?

      Looking at your noise margin I would say there is a lot of potential for more download speed, especially as you have the maximum upload. This may come automatically through the DLM, but it may be worth giving Sky a call and make them aware of the problem, just in case there is a glitch somewhere.

      Did you notice an increase in the noise margin when you fitted the vDSL plate? This is actually more significant than the attenuation when it comes to possible speed. If your margin was a lot lower, then DLM should now kick in and raise your speed. Unfortunately this can take quite a few days to correct the issue.

      TomD


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      https://www.nirsoft.net/utils/wifi_information_view.html/ TCPOptimiser /Test Socket

      Note - When downloading always select the Custom install or you will end up with stuff you don't want.





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      Re: So whats a good attenuation and noise margin?

      My connection speed is 40, upstream 10.

      Noise margin went from 18.5 to 19.5 when I fitted vdsl faceplate.
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      Re: So whats a good attenuation and noise margin?

      Thanks Isitme... I'll get onto Sky.

      i don't have any pre-faceplate stats unfortunately...

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      Re: So whats a good attenuation and noise margin?

      My download connection is 79987 and upload 20000 which are pretty much maximum. My downstream attenuation is 8.6 and snr 9.7. Going by all the figures in this thread my snr is very low but yet I still get the maximum speed. Can someone explain this please.

      Skooby

     

     
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