@boozy
Thanks for the further explanation and link which I shall have to read later. :/ It was not my intention to be up at this ungodly hour but circumstance dictates that I am, but it also means Im slow and not the best time to attempt to digest reading anything technical, didn't even get far with wombats thread.
>> I have no clue why the attenuation is less with the degraged service
It's not uncommon. Noise can and does affect the attenuation. I've seen faulty/incorrectly fitted filters can add up to 10dB, there's also plenty of examples where oxidised joints have also affected the attenuation, even on my own line many years ago. RFI, EMI, electrical currents and damaged cables all have the potential to increase the attenuation.
Whilst the measurement provided by the modem is used to estimate line length, the reality is the modem calculates the attenuation figure based on the difference between the power transmitted and the power received. The difference between these 2 figures can be affected by a multitude of things, not just line length. *
linky@Chrys
Are neighbours also experiencing similar severe speed losses or it just you?
With the fault having other effects such as increasing the attenuation, does this not mean the problem is pretty local - between the cab & home. iirc youre <300m from the cab?
One of my concerns is ignoring what the other graphs and figures are telling us and focusing solely on the bridge tap.
*was about to link to my own page written many years ago, but then deliberately chose a different source.
Got a heavy few days coming up with appts, so bowing out of this convo now as regretfully dont have any more time to speculate or justify my reasoning.