Grounding An Antenna In Attic
If you need to bend the ground wire make the bends as gradual and as smooth as possible.
Grounding an antenna in attic. Neither apply to an antenna in the attic. Then on a separate lug on the bussbar run jacketed stranded 2 ground wire outside and straight down the side of the house to a ground rod sunk at least six feet below ground eight feet would be better. Stick to the building code. You should therefore strongly consider grounding your attic mounted antenna by attaching a grounding block to the coaxial cable to shunt off excessive leaked current.
Run a length of 6 jacketed stranded ground wire from whichever you installed there directly to your bussbar. So there isn t any ground from the tv either to bleed off any voltage that might pass through the antenna. Air movement in your attic should not pose a problem. There is no requirement to ground an attic antenna in the national electrical code.
Securely fasten the grounding wire to the side of your house using staples or other zip screw type wire clamp suitable for the job. Exterior antennas must have their mounting rod grounded to provide electric discharge in the event of a lightning strike or static accumulation from other causes. The mounting rod is insulated from any of the active reception parts. Try to keep your ground wire runs as short as possible and avoid making 90 degree turns or bends.
From your description it sounds as if you may create a ground loop which may cause problems throughout the house.