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Could this cable be causing internet issues? (alien.top)

submitted 11 months ago by [email protected] to c/[email protected]

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There is an aerial cable that comes to this splitter (from the left) that splits out two cables. The one powering my modem is the one that’s damaged.

I’ve been having internet issues during the day for the last few days (I live in the northeast US, so very cold right now if that’s relevant). It’s only during the day. Internet speed is VERY slow when it’s connected (<10mbps download, <1 upload) and it is constantly disconnecting. But at nights internet is normal with no interruptions (160mbsp download, 10 upload). I had a tech scheduled to come out to fix the cable today but the guy never showed up (I could do it on my own but don’t fully trust myself with it) but it seems weird it’s only happening during the day. Is this actually the issue?

The other cable from the splitter goes nowhere, so is not an option. This is a rented house so there’s only so much I can do.

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[–] [email protected] 1 points 11 months ago

100% coax is super susceptible to cuts and exposure to weather. You're probably degrading the whole node with that. even a little bit of loss of shield can compromise the low band return spectrum and the whole nodes upstream. this is why cable modem is the new DSL. it sucks for performance and reliability. Any one customer without even trying can cause an outage on coax. Lets unplug that TV with cable card and a center pin thats too long .. boom antenna. coax not tightened down enough on a splitter, modem or set top box. If your not using a PPC SignalTight or SignalTight Clone it will ingress low band. At some point you almost have to look at a coax like its a water pipe. We had a video headend that had leaks like this .. was so bad we either have to replace all cable or just put in filters. the filters worked better than expected and lowered the noise floor 5-8 db more than before the ingress problem even existed.

i have my hands in some coax hub and headend work but mostly hard troubleshooting like odd leaks/ingress problems that stuff like this picture cause.

there was a video by Brady Volp a well known expert in the docsis/coax space about how even cable staples will cause signal reflections. its a hard space to keep functional and the more stringent the requirements get the harder it is.