30-07-2010, 15:59
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#1
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Inactive
Join Date: Mar 2010
Posts: 19
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Signal Levels?
Hi there having had my broadband and tv installed a few months back and reporting my signal levels on Cable Forum i was informed that my levels were far to low which was contributing to my slower than normal speeds and intermittent dropouts. Having called technical support they told me my signal levels are fine and was advised that inorder to obtain the 20mb speeds to which i subscribe i must delete my browsing history and delete temporary files and cookies.....? My signal stats are below....Anyone know if these are acceptable or not? Any help greatly appreciated. Kind regards.
Downstream
Power Level -7.9 dBmV
Signal to Noise Ratio 39.4 dB
Upstream
Power Level 44.0 dBmV
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30-07-2010, 17:35
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#2
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Inactive
Join Date: May 2010
Services: Plusnet FTTC,
FoxSat HDR for TV,
Vonage VOIP.
Posts: 2,082
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Re: Signal Levels?
http://www.cableforum.co.uk/board/12...al-levels.html
According to that your downstream level may be low but as your SNR looks plenty high enough it doesn't seem to be causing you any problem.
The clear your temp files and cookies sounds like script following BS to me as the effect will virtually certainly be minimal.
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30-07-2010, 18:15
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#3
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Permanently Banned
Join Date: Jan 2009
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Re: Signal Levels?
Your Downstream is a little low so call tomorrow after 0800 on 151 from a Virginmedia phone line or 0845 454 1111 from any other phone line and an agent will run some diagnostics with you.
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30-07-2010, 19:08
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#4
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Inactive
Join Date: Mar 2010
Posts: 19
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Re: Signal Levels?
Hi thanks for the replies, i have called tech for some diagnostics and said the signal is perfectly fine for my package even though the internet intermittently drops out on occasion, especially when downloading at high speed. High speed for me would be around 600kb/s on my 20MB connection  Digital TV also experiences pixelation maybe once or twice every few minutes which also leads me to believe its a signal issue. Since my DS is within 12 and -12dBmV she said it should not be affecting my service and my speed and dropouts are likely caused by conflicting or interfering software on my computer, which i know not to be the case. Also told the nice (offshore callcentre) lady that when i moved into the property the exsisting cables were in quite bad nick, for example, the metal coax connectors on the end of the shabby exsisting cabling is held on with electrical tape rather than actually "crimped" on. She intimated that since the signal seems fine form her end there is no need to replace them.....Any suggestions?
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30-07-2010, 19:25
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#5
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Sad Doig Fan!
Join Date: Aug 2007
Location: Barry South Wales
Age: 70
Services: With VM for BB 250Mb service.(Deal)
Posts: 11,850
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Re: Signal Levels?
-12 is way outside recommended levels hence Masque saying your downstream power was on the low side.
What is your upstream modulation 16QAM or QPSK?
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30-07-2010, 19:37
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#6
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Permanently Banned
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Re: Signal Levels?
Quote:
Originally Posted by kdouglas1987
Hi thanks for the replies, i have called tech for some diagnostics and said the signal is perfectly fine for my package even though the internet intermittently drops out on occasion, especially when downloading at high speed. High speed for me would be around 600kb/s on my 20MB connection  Digital TV also experiences pixelation maybe once or twice every few minutes which also leads me to believe its a signal issue. Since my DS is within 12 and -12dBmV she said it should not be affecting my service and my speed and dropouts are likely caused by conflicting or interfering software on my computer, which i know not to be the case. Also told the nice (offshore callcentre) lady that when i moved into the property the exsisting cables were in quite bad nick, for example, the metal coax connectors on the end of the shabby exsisting cabling is held on with electrical tape rather than actually "crimped" on. She intimated that since the signal seems fine form her end there is no need to replace them.....Any suggestions?
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I did say call tomorrow morning and you should get a UK agent with more of an idea of what is going on, also mention the cabling.
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30-07-2010, 22:35
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#7
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Inactive
Join Date: Mar 2010
Posts: 19
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Re: Signal Levels?
Quote:
Originally Posted by pip08456
-12 is way outside recommended levels hence Masque saying your downstream power was on the low side.
What is your upstream modulation 16QAM or QPSK?
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Its QPSK. Is that good or bad?
---------- Post added at 23:35 ---------- Previous post was at 23:31 ----------
Quote:
Originally Posted by Masque
I did say call tomorrow morning and you should get a UK agent with more of an idea of what is going on, also mention the cabling.
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You never mentioned a UK agent in your first post? Im worried they're gunna think im messing them around  I already told the lady today about the cabling and the signal and she said theyre ok. Will a different agent not see it the same way the first one did? I would just feel stupid if they say yeah you rang yesterday and we told you its fine lol...Cheers
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30-07-2010, 23:16
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#8
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Wisdom & truth
Join Date: Jul 2009
Location: RG41
Services: RG41: 1Gig VOLT
Rutland: Gigaclear 400/400
Posts: 12,969
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Re: Signal Levels?
It's dead simple. If your TV is pixellating and your modem is dropping out, you've got signal attenuation and you've clearly identified the likely reason. -7 dBmv is too low.
Take Masque's advice or call 150 and take the leaving us option and tell them the rubbish you've been told and you're not standing for this. Unless your problem is taken seriously, you'll leave VM (even if you won't).
HTH.
__________________
Seph.
My advice is at your risk.
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30-07-2010, 23:24
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#9
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Inactive
Join Date: Mar 2010
Posts: 19
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Re: Signal Levels?
Quote:
Originally Posted by Sephiroth
It's dead simple. If your TV is pixellating and your modem is dropping out, you've got signal attenuation and you've clearly identified the likely reason. -7 dBmv is too low.
Take Masque's advice or call 150 and take the leaving us option and tell them the rubbish you've been told and you're not standing for this. Unless your problem is taken seriously, you'll leave VM (even if you won't).
HTH.
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I shall definatly be giving them a call....im slightly worried if i say "im not standing for this, i want to leave virgin please" and they says "ok, no problem" lol....
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30-07-2010, 23:42
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#10
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Sad Doig Fan!
Join Date: Aug 2007
Location: Barry South Wales
Age: 70
Services: With VM for BB 250Mb service.(Deal)
Posts: 11,850
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Re: Signal Levels?
QPSK as the modulation points to a line fault. Don't worry about threatening to leave they don't want that.
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30-07-2010, 23:44
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#11
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Wisdom & truth
Join Date: Jul 2009
Location: RG41
Services: RG41: 1Gig VOLT
Rutland: Gigaclear 400/400
Posts: 12,969
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Re: Signal Levels?
Fair point. But get names of people you're talking to so that even if your bluff is called, you can go to complaints and put the problem to them.
Another course of action is post your story, modem stats and event log onto the VM forum where tech support will pick up on the problem for you.
__________________
Seph.
My advice is at your risk.
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30-07-2010, 23:45
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#12
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Sad Doig Fan!
Join Date: Aug 2007
Location: Barry South Wales
Age: 70
Services: With VM for BB 250Mb service.(Deal)
Posts: 11,850
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Re: Signal Levels?
Quote:
Originally Posted by Sephiroth
Another course of action is post your story, modem stats and event log onto the VM forum where tech support will pick up on the problem for you.
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After a minimum of 48hrs if no one else posts in his thread.
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31-07-2010, 05:30
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#13
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Re: Signal Levels?
Quote:
Originally Posted by kdouglas1987
You never mentioned a UK agent in your first post?
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I said in the morning after 0800 not now for the simple reason we do not work during the night and only start at 0800, we also do not work Sunday's.
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31-07-2010, 17:54
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#14
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Inactive
Join Date: Aug 2007
Location: Scotland
Age: 53
Services: 20mb, Tv, Phone
Posts: 2,849
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Re: Signal Levels?
Quote:
Originally Posted by Masque
I said in the morning after 0800 not now for the simple reason we do not work during the night and only start at 0800, we also do not work Sunday's.
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Yes we do
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31-07-2010, 18:16
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#15
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Permanently Banned
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Re: Signal Levels?
Quote:
Originally Posted by moaningmags
Yes we do
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Sorry of course you guys work Sunday it is just us guys in Liverpool and Swansea that don't.
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