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[kitzuser87430]

if I could attain another 32kbps or two on a line, it would push me up to the magic 2272 ds sync which is the threshold for BTW 20CN IP Profile 2000 instead of 1750

Off topic slightly.....

Can/have you tweaked the target SNRM of your modem(s) that is what I do to gain either stability (get as close to 6240 kbps) or speed (get just above 6816 kbps).

On my hg635 I issue the command xdslcmd start --up --snr 120.

What does your SNRM drop to at its lowest at night ?

Do you monitor your modem(s), or because they are in modem only mode behind your firebrick it is too difficult?

Ian

[roseway]

Just out of interest, how large is the BT mains conditioner?

12 cm high, 19 cm long, 14 cm wide (plus mounting flanges)
Weight: 4.8 kg

[les-70]

I currently use two levels of mains conditioning, nearest to the three modems is a Tacima mains block (some hifi enthusiasts have been known to use these if memory serves) and then behind that is a Belkin PureAV mains block, and behind that a chunky APC UPS.

 
  I was never able to detect a benefit from a "Tacima", I wonder if it is the isolation provided by the Mains Conditioner rather than its filtering that gives a benefit.  The fact that it seems best with the output un-earthed suggests that. 

[les-70]

Just out of interest, how large is the BT mains conditioner?

12 cm high, 19 cm long, 14 cm wide (plus mounting flanges)
Weight: 4.8 kg

  They are a not something that you would want on view.  Mine sits on the floor out of sight behind a desk pedestal.

[burakkucat]

. . .  had kettle-type plugs (what are they properly called?) . . .

That would be an IEC connector, either C13 & C14 or C15 &C16.

[burakkucat]

Just out of interest, how large is the BT mains conditioner?

Here are a couple of single-socket versions. I have seen them with 1, 2 or 4 socket outlets. The physical size is directly proportional to the number of socket outlets.

[roseway]

That's the one I've got, for which I quoted the dimensions.

[burakkucat]

That's the one I've got, for which I quoted the dimensions.

I was not aware that you are also an owner and user of one of those devices. What device(s) do you have powered thorough the conditioner, please?

The dimensions that you have quoted along with the images via the eBay link should show that they are not small devices that can be discreetly tucked away.

[GigabitEthernet]

I'm looking at purchasing something like this as I need a new extension plug anyway.

Would this be as good as the BT option?

[les-70]

  I don't think so.  I could not detect any impact from using that one but I had a clear benefit from the BT unit. Also neither will make any difference unless you have the sort of noise that they mitigate.  You really just have try one or the other and see.

[Weaver]

if I could attain another 32kbps or two on a line, it would push me up to the magic 2272 ds sync which is the threshold for BTW 20CN IP Profile 2000 instead of 1750

Can/have you tweaked the target SNRM of your modem(s) that is what I do to gain either stability (get as close to 6240 kbps) or speed (get just above 6816 kbps).

What does your SNRM drop to at its lowest at night ?

Do you monitor your modem(s), or because they are in modem only mode behind your firebrick it is too difficult?

I can monitor the stats on my modems, because A&A's servers can interrogate them, god knows  how, remotely and get sync rate, SNRM, all the stuff I need. I check on them all once a week or so. SNRM doesn't drop much at night, below 6dB to 5 occasionally. Sometimes it is 7dB all day.

As for issuing tweaking commands to all the modems, experience suggests that that would be a step too far. I've had a bad experience (documented in an earlier thread, where?) where ds sync at 2240 or similar was basically too high and needed to be reduced (by a short off-on, luckily) slightly which brought a huge ES rate down to zero for the loss of a few k ds sync (which equals zero as it's in the same band).

[Weaver]

I'm looking at purchasing something like this as I need a new extension plug anyway.

That's what I have for the modems, with a Belkin PureAV behind it (about £40).

[NewtronStar]

Also neither will make any difference unless you have the sort of noise that they mitigate.  You really just have try one or the other and see.

Try a 12v spare car battery 1st as the noise may not be coming in on the mains.

[roseway]

That's the one I've got, for which I quoted the dimensions.

I was not aware that you are also an owner and user of one of those devices. What device(s) do you have powered thorough the conditioner, please?

The dimensions that you have quoted along with the images via the eBay link should show that they are not small devices that can be discreetly tucked away.

As you say, they're substantial, heavy units, better suited to industrial use than domestic.

I bought mine because I have a recurring issue with spikes on my upstream SNRM and I wanted to test if these were the result of mains spikes. I live in a rural area with rather dodgy mains supplies. I used it to supply power to my modem/router and network switch, and it made not a jot of difference. It's now packed away in a cupboard.

[Ronski]

I was also going to suggest testing with a car battery, but see NS beat me to it. Just make sure all the equipment is 12v