Ways to ground roof-mounted Sattelite Dish
I recently moved the RG6 conductors between my satellite multiswitch and the exterior dish from a path that exited a crawlspace and ran up the side of the house. The new path is shorter and is concealed by using interior framing cavities, then through the attic floor, and up to the eaves. Originally, there was a grounding block with a conductor running down the side of the house to a clamp on an outdoor water spigot (not the best ground, but good for the house since my house electrical ground is still my cold water supply).
I'd like to NOT have a ground conductor running down the side of the house (aesthetics), so I'm thinking of putting a ground block just inside the attic (close to the penetrations in the eaves) and connecting to a ground inside the structure.
If I do this, can I connect it to the ground in an existing lighting branch circuit located in the attic or am I better off running a dedicated conductor down through the house to connect as close as possible to the building ground connection? I.e. would the "lightning ground" for the satellite have different grounding characteristics than your typical conductor in residential branch circuit?
Your thoughts and suggestions are appreciated.