Street lighting and SNR

[kinmel]

It seems street lighting does indeed affect your ADSL connection:-

This week all the street lights between my house and the BT street cabinet have been completely replaced; new cabling,new posts and energy efficient lamps.

The new lights were switched on yesterday and this morning I re-booted my 2700hgv router and the sync has improved from 4672 to 4928, still with a 6.0 SNR at 58.8 attenuation.

To think that back in January my old router gave me a sync of 3616, thats a 36% improvement !

ADSLMax rocks 

[ducky22]

Hmm... is there underground BT cabling or are there polls?

I wouldn't have thought the interference from an energy saving bulb would bother underground cables - can definitely see polls having minor issues tho.

[Lance]

I know Rik sees his noise margin drop when the street light outside his house comes on. At least having the lights replaced has had a positive effect, Alan!

[JK]

I have a street light about 6 feet from my line.
In my case it has a very small effect just when starting up. Once lit zero effect at all.
More effect from the boy racers with noisy motors.

[plugwash]

Hmm... is there underground BT cabling or are there polls?

I wouldn't have thought the interference from an energy saving bulb would bother underground cables - can definitely see polls having minor issues tho.

Remember the mains cables probablly run underground too, if the filter circuits are ***** and the lamps are putting a lot of high frequency noise on the mains then some of that could potentially end up on nearby telephone cables.

[Rik]

Having watched Routerstats over the months, I can definitely link a 1db drop in noise margin to the switching on of the street lamp which sits on my front lawn. According to the wayleave drawings, mains, telephone and TV all enter on the same path.

[Sebby]

Street lighting seems to affect users differently. For some, it can cause their ADSL to lose sync, but then that's usually faulty lighting. Others see a small dip in SNRM.

It's interesting to learn that you've seen an increase in sync. You really have had a good improvement since January!

[kinmel]

It's interesting to learn that you've seen an increase in sync. You really have had a good improvement since January!

It is amazing what is possible with AdslMax, when Adsl was first introduced this phone line did not qualify for the 512k product.

[Rik]

It's been quite a journey over the couple of years since Max was introduced. Much as I love to hate BT with the best of them, they do seem to have improved the performance of Max, and I now get 3x the speed I could achieve at fixed rate. I wonder if I could just persuade them to trial fibre to the home for me. 

[Sebby]

It is amazing what is possible with AdslMax, when Adsl was first introduced this phone line did not qualify for the 512k product.

So true. I was always able to get 512k and was just able to get 1Mb, but nothing higher. Now I'm sync'd at 4.6Mb.

[Rik]

And that's just upstream.

[Sebby]