I want to install an OTA external antenna to an existing satellite dish mast, I have removed the dish and plan on just attaching the antenna. The existing dish mast was never grounded, there are also coax grounding blocks on the outside of the house, but they are not grounded either.
The location of the mast is within a valley about mid way up the roof, between the main roof and the garage, its below the ridge of the house. Its not in a very good location to run a ground wire, the wire would have to run across the top of the roof then down to the side of the house grounding stake.
My question I'm wondering is if its ok to ground the external antenna somewhere within the attic? I could run 2 sheathed ground wires, one from the mast grounding block, the other from the coax grounding block into the attic where the coax goes into the house, then into the house ground, either to a cold water line or possibly into an electrical ground (that I'm not sure how to do). Is this an ok solution, or would it be better to run a ground wire across the roof ? I really don't want to re-locate the mast or the antenna. Any assistance would be greatly appreciated.
I'm probably a little less then 20 miles from the towers, so a mohu leaf might be an option. I already have the antenna so was wanting to just try that and see, but if it worked, I wanted to make sure I got it grounded properly.