Slightly offtopic, but I wonder if anyone could explain to me how to correctly read my Hlog? It appears to be a stable curve for most tones, but upon reaching tone 2750, there are many spikes.
Reading it from low frequency to high frequency (left to right), you have usable US (green), DS (red), US (green) and DS (red). At the frequencies of the
next US band, the signal is so degraded (due to line length, conductor material (aluminium), etc) that it drops to the "no signal present" value (-94.6 dB). At the following DS band (even higher frequencies) there is an indication of some signal "getting through" but it is essentially unusable (the "ragged tail" of the plot).
I would also like to suggest that you consider the the bands in the "Discovery Phase" and in the "Medley Phase" (a.k.a. "showtime") of your pbParams information.