The type of coax cable recommended for digital satellite TV installations. RG-6 is a larger-size cable than the lower-grade RG-59 cable found in some homes. RG-59 has a small center conductor, a small insulating dielectric (white foam inside the cable) and typically a single outer shield. By comparison, RG-6 has a larger center conductor, a dual or quad shield, and a much larger insulating dielectric, ensuring greater bandwidth and lower frequency loss per foot.