Chad, you didn't describe specifically what part of the satellite system you mean. If you're installing a dish and mean the cable bringing in the signal from the dish to the settop box(which is in the gigahertz frequency range), RG6 is generally suggested, especially if the run is over about 50'. If you mean the signal coming out of the box, which has been converted to a lower frequency, RG6 is unnecessary and a thinner cable, such as RG59, is fine.

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Enjoy the music, not the equipment.