If you ever go to satellite Tv, youy should think about this.
As it stands right now, in order to feed several TV sets, they usually run 4 RG6 cables from the multisatellite dish (which has 4 outputs) to a multiswitch.
Then an RG6 cable is run from each output of the multiswitch to each satellite receiver at the TV. If the satellite receiver has two tuners, you would need 2 cables running from 2 outputs on the multiswitch.
I'd recommend that the area, where the cable from the antenna and the various runs going to the TV's are located, be kept so that you can get to it easily.
You may need power available at that point also.

There is probably much more information here than you need but it does have the information you are looking for and is an interesting read.

Here is a link that might be useful: Structured wiring

Home run all your RG-6 cables to a single point. Only connect the ones that you are actually using. No point in having losses from splitter ports that are not actually used. Run two RG-6 cables to each possible TV location. This can be used for dual tuner satellite or over-the-air HDTV + sat or cable. Leave in pull strings and conduit for future changes.

Bad info above.

If, and that's a BIG if, your "potential" sat receivers would be located AT the individual TV locations you should run a minimum of 3 RG6 (2 tuners & 1 off-air)to each location. And you should also run at least one Cat5 to each as well (telco).