Dual RG6 Cable with an integral web messenger or ground maybe used for Cable TV or Satellite, aerial or premise feed with ground or both depending on bandwidth and messenger material composition. Bandwidthes of 1 GHz (1000 MHz) are typically reserved for use with Cable TV. Today's Satellite use is 2200 MHz (2.2 GHZ0 with cable manufactured to sweep test to 3 GHz (3000 MHz). The "Messenger" is either for Aerial support or grounding or both. If the material is STeel or Stainless steel, it is for Aerial Suspension use. If copper, then it is obviously used for a ground connection/ lightning arrest from the Dish installation. If it is copper clad steel, then depending on the thickness and hardness of the steel, it may be used for both.
