I thought the table was pretty clear about the sharp drop on G.fast....or is comprehension of distance so bad I need to list it in football pitches

In reply to a post by Ignitionnet:

If you aren't getting full 80Mb sync due to loss you aren't going to get anything better out of technology that runs at higher frequencies.

Right now, this looks like a decent rule-of-thumb.

Better range is available out of a "raw" G.Fast line, but that would need to reuse the frequencies that VDSL2 is using. That won't be possible in the near future; BT seem to be looking at how to better deal with this. That might turn into something or nothing ... but it is likely to be a way off.

Is it accurate though?

On fttc I'm 175m from my cabinet as the crow flies, 283m as reported by a GEA test and my router reports 11.6dB attenuation.

Your 2nd table indicates a line length of 500m for an 11dB attenuation with a downstream speed of 38Mbs.

You're not even on the ballpark with that figure!

Edited by IanBB (Sat 26-Aug-17 21:25:10)

It is probably best to assume that attenuation figures aren't consistent.

I had one line with an attenuation of 16.5dB, of around 375-400m. Fairly consistent with your figure.

My current line is 8.6dB, and about 100m. I think this one is thinner 0.4mm copper.

I am at 400m get 79 sync at 19.9 attenuation. How does that stack up?

The answers aren't so black and white, as ever it's a shade of grey in between, due to all the variables.

NTE to DSLAM for my line is 220m spot on, I see 9db attenuation ...

There is an easy answer delete the table

In reply to a post by MrSaffron:

I thought the table was pretty clear about the sharp drop on G.fast....or is comprehension of distance so bad I need to list it in football pitches

Try flashing banners per intrusive banner ads.

Ah yes, must say we do not have anywhere near enough compared to the majority of sites that claim to be news sites

How do you get from the values reported by pbparams to a single figure?

VDSL Band Status	U0	U1	U2	U3	U4	D1	D2	D3
  Line Attenuation(dB):	2.3	14.1	22.5	N/A	N/A	7.6	18.5	29.4
Signal Attenuation(dB):	2.3	13.3	21.8	N/A	N/A	10.8	18.3	29.4