My MK2 purchase arrived yesterday, and I fitted it with much glee.
Some before/after stats on my ADSL2+ line, using a BT HG612 - with a big caveat after
Item Attainable Actual Attainable Actual Attenuation S/N Margin
UP UP DOWN DOWN UP DOWN UP DOWN
before reboot 1252 1020 21480 20412 10.1 20.5 14 5.5
After reboot 1268 1020 21492 19952 10.1 20.5 14.7 6.1
With MK2 1224 1020 21484 19967 10.1 20.5 12.6 6.1
2nd reboot with MK2 1220 1020 21492 19944 10.1 20.5 12.5 6.1
So, swapping from a Mk1 to a MK2 VDSL plate did not affect attenuation or synch speeds in my case.
The drop in UP S/N margin is odd, and puzzled me. It corresponded to me seeing about 30 "UP" bitswaps per second, which I'd never seen before. This continued after rebooting the modem.
I wondered if I'd done something wrong, and disconnected it all then reassembled, but the problem remained.
However, about 2 hours later the UP S/N margin returned to previous levels, and currently it's at 15.8 . Rogue bit of interference? Something settling in? Who knows
Finally, 3 QLN plots : the first from the day before, the 2nd after a reboot and finally the 3rd following the swap to the MK2 VDSL.
Seems to be almost no difference!
So, for me it has so far not made anything better, nor worse, although
possibly I'm seeing fewer bitswaps and errors (now that it's settled down) but I need to monitor a bit longer for that.
Hope that's of some interest
Ian