coaxial cable

Hey everybody, I didn't see a section for the brand name : HiSeeU, so I hope I'm posting this in the right area. I have a HiSeeU brand name IP security camera setup. I have 13 cameras in total connected, and I'm using a switch because the NVR's inputs were all used up. Anyways, today I upgraded...

I bought a new house recently. It is about 12 years old. In the master bedroom closet there is a junction box of sorts that I believe splits and amplifies the cable to other rooms in the house. My internet comes in to a modem through the cable line, so I need at least one of these but so far as...