Solved! Go to Solution.
Even without pictures the response is the same: The average user cannot combine Dish or DirectTV and TWC on a single cable. Special hardware is required and TWC->Spectrum does not support it. You need two separate runs of RG6-QS coaxial cable
...can I run my Directv cable and modem cable from the same outlet?
Absolutely not. The technologies are not really compatible for coexisting with each other.
If you overlay satellite signals onto a cable plant you can cause significant issues for yourself and your neighbors who share the tap with you. In addition to being a bad neighbor (if the ethics don't matter), then be forewarned we and often will disconnect your service, to protect the other paying customers. Charter is more strict on people causing bad noise issues for other paying customers than TWC ever was, which frankly is a really good thing in the long-term as it means the signal quality & clarity will improve across the board (faster & more stable internet & TV, less pixilation and less service interruptions). tl;dr? Don't be that guy. (I'm teasing, but seriously please don't).
I found the box out by the garage with coaxial cable and there is a box in a closet next to the fuse box with the Directv cables an such not sure if internet runs in that same box or not?
Satellite can use a pretty wide range of frequencies, all the way up to 3 GHz. Charter (depending on area) uses between 10 MHz and 1000 Mhz,
Simply put though, there's no good way to filter the two separately, it's not like a DSL filter on a phone line where you can split the analog and digital. They both use similar, but non-compatible systems. And their frequencies overlap in some places.
And when it comes to using a random coax wire you found out by the garage...
It needs to be at least tri-shielded or quad-shielded coax (RG6/RG59/RG11) and have GOOD FITTINGS/CONNECTORS. I emphasize this because if you have any of the following connectors, they are trash for using on modern cable systems. They used to be ok back in the 1960's, but are terribly leaky (ingress/egress noise sources) with as sensitive as QAM256 is these days...
All of these seen in the photos below are bad to use: