This happens to me (and my neighbours) 2 or 3 times a week:

http://img43.imageshack.us/img43/6374/screenshot003f...

You can see the effect it has on the connection. (Red line is sync speed.) The neighbours with Sky and BT are permanently DLM'd to 2.5 Mb or less. Two of us on other LLU (TalkTalk and C&W) are able to recover to circa 5Mb.

BT/Openreach REIN engineers are aware but the randomness of the noise burst has defeated them so far. It is very noticeable on an off-tune AM radio and appears to be strongest above the BT junction box next door.

Mine line has been up at 5120kbps for 9 days, just checked the stats and it's gone back down and the router stats graph is all over the place.

Everyone is back at work today. Hmmmm

No overhead lines around here at all.

Edited by wolvesmad (Tue 04-Jan-11 17:32:32)

i have played with the rein aspect and its not easy at all. thankfully the area rein guy is smarter than my wife and usually hits it on the head after a bit of work.

9 mins of noise. you would need to be very lucky to be in the right spot at the right time.

In reply to a post by wolvesmad:

Mine line has been up at 5120kbps for 9 days, just checked the stats and it's gone back down and the router stats graph is all over the place.

Everyone is back at work today. Hmmmm

No overhead lines around here at all.

doesnt have to be power lines, and the source doesnt need to be in your immediate area.

There are no overhead lines around here at all. All lines leaving the exchange are underground.

just noticed something, today my line has been fine (obviously someone back at work etc) anyway its gone downhill again now so either someone turning a device on or crosstalk.

There was no issues with these tones earlier, however they now have issues, is this a sign of crosstalk or noise?

It seems the higher adsl2+ frequencies.

Gap8 1682kHz-1686kHz (Tone390)
Gap9 1751kHz-1760kHz (Tone406-Tone407)
Gap10 1824kHz-1833kHz (Tone423-Tone424)
Gap11 1893kHz-1902kHz (Tone439-Tone440)
Gap12 1966kHz-1975kHz (Tone456-Tone457)
Gap13 2001kHz-2014kHz (Tone464-Tone466)
Gap14 2040kHz-2044kHz (Tone473)

In reply to a post by andyboygsi:

9 mins of noise. you would need to be very lucky to be in the right spot at the right time.

That particular noiseburst lasted 1 hour 35 mins. It was very bad for the first 9 minutes; although the router managed to resync after that the connection was almost unusable (very high error count) until the noise stopped.

Very interested to find this thread...

Early last year we had one of those letters telling us that our electricity supply would be out for two hours or so.

We were out when the switch off happened, but arrived home to find our Sky Box on the blink (it wasn't connected to the 'phone line). I mention this because of the high co-incidence factor with what I'm about to write...

A few weeks after the switch off, II noticed that my sync had dropped from our usual 8128 to around 6500.

I've been unable to re-establish my former 8128, despite trying various routers, connecting to the master socket etc...

So, what precisely did the National Grid (or its contractors) do to mess things up for us...?

Bridgnorth, Shropshire.

SPD.

Has you Target SNR increased? That would explain why your sync has dropped.

My overhead power lines were replaced by EDF in December. My phone line shares the same pole. They managed to 'nick' my phone wire while they were working I had a feeling something would happen! (just my luck)

My stats/errors etc. were all over the shop when it rained(sic - see thread title ) BT changed my cable from pole to house and things seem fine again

On Wednesday, my stats were:

Downstream 6528, Upstream 896. Noise 6.1 down and 11.0 up. Attenuation 23.0 down and 9.0 up. Output power down 19.8 and up 10.7.

I was switched to 21CN on the 5th, but hadn't requested a move to ADSL2+.

Strange that tonight, my downstream connection is now 11534 and my up is 1083.

SPD.