Comment by creeble

2 years ago

Interesting, I wonder if I’m experiencing something a little bit similar that Comcast can’t seem to debug.

Almost every day, in the heat of summer, I get one to five 10-minute outages as soon as the temp gets over about 80F. More when it’s hotter, usually. Usually it results in a modem reset, so it’s hard to tell how long the actual outage is.

Been happening for going on 5 years. They replaced the under-street cable from our house to the junction box across the street to no effect. I suspect it’s that junction box, but afaict, none of my neighbors that share that junction box have the same issue. Not very fun to have your WFH day collapse unexpectedly in the middle of the afternoon.

Strangely, for the last month we’ve had several days of 80+ temps with no sign of outage. So fun.

Edit: yes of course multiple modem replacements and inside cable checks, to no avail.

We had the same problem at an old house. There was a cable splitter in the attic that was expanding in the heat and losing connection to the cable. We bought a heftier one and moved it under the insulation in the attic.

  • Interesting, I removed a splitter from the attic many years ago and replaced it with an F-F coupler.

    I wonder if the coupler’s center conductor contacts could be expanding just enough to break the connection?

Yeah, probably very similar thing if that pattern is true. It's the shift forcing your modem to change speeds, but neither side being willing to accept it.

If you can, try forcing a level at/below the speed you get during the breakage and see if it just rides it out. If it does, shift it back up and plan your coffee breaks around it. Or don't, I'm not your mother

Several day's of 80+ temps, meaning it hasn't dropped below 80? Possibly it is just getting above 80 before you start your work day. And not dropping below until after your work day has ended?

I've experienced something similar except for temperatures below ~32-36 degrees. At this particular location it would result in a ~1hr outage going below that temperature, but not when it went back above it for some reason.