You'd be best off pulling 2 RG 6 and 2 CAT5e to each location
(homerun)(minimum). A cable for phone and a separate cable for data.
Satellite TV and cable TV can coexist on the same cable, no problem, but
the cable modem really needs to have its own dedicated line. It needs
to be connected via its own splitter (preferably a directional coupler
(tap)) and be the first connection in the system. The other leg of the
splitter (or thru leg of the DC) then goes to the (amplifier, if more
than 3 outlets, then) distribution splitter.
> I am in the process of an addition to my house and had a couple of
> questions if you don't mind. When wiring the extension for comcast
> cable TV, cable high speed internet access, and satellite tv -- which
> cables do I use? Do I need separate cables for the 3, or will one
> cable carry all the signals?
> At home depot one guy told me to buy the 18/1, another said the CAT 5,
> another said BOTH!!! He confused me more than he helped me...
> I was hoping someone could shed some light on this for me.