Xfinity followed up the end of the last thread where high ambient temperatures (~90+F) directly correlated with high packet loss and ~10db LESS Pwr (dBmV) than when temperatures cooled down in the evenings. Power readings were made with my MB8600 cable modem. Xfinity sent out a tech and I gave instructions to take a look at and replace cabling from demarc to telephone pole splitter.
Tech came out but did not want to do that, so I still have ~10db of variation in signal power every day. However, he did say there was a problem at "the node" (I assume HFC-Fiber node) and that would be fixed by someone else in a few days.
Indeed in a few days the base power level increased almost 10db but the level still varies from 0.3db to 9.8db every 24 hours (pictures below). This still causes some packet loss but, as the daytime temperatures are no longer reaching 90F, the loss is less.
So my quetion to the experts are:
