I'm mounting a light-weight metal TV antenna to a metal mast attached to old-school metal roof columns (with the curly-cues) on a small second floor porch which has a metal porch roof, and metal floor covered with outdoor deck carpet. The mast mounts have rubber bumpers between them and the metal porch supports. The mast does not touch the porch floor, so there does not appear to be a bond (?) between the antenna and metal porch components. The mast extends a few feet above the porch, but nowhere near the height of the brick house, which has a gable roof going at least another 10 feet higher.
The mast and coaxial are each grounded to the house ground rod with 10 gauge wire. The 1930's house has one primary rod of unknown/unmarked length near a newer 200amp box, and the cable/internet service line grounds to a 5' rod 30' away from the primary rod. I have bonded the 5' cable rod to the primary rod with #6. The unused phone line-in is grounded to the iron water line-in (which goes at least 40' underground to the meter at the street). The main panel is near the water-in, but not grounded to it. Presumably the primary rod, even with the cable rod, isn't 'code' (no ohm test). I know one option is replace the unknown primary with two 8' rods > 6' apart, bonded by #6. I'm not inclined to bother with the aging iron pipe. Input about the grounding electrodes is welcome, but I'm inclined to do two new 8' rods and a jumper. So...
If I replace the unknown rod with 8', and replace the 5' cable rod with 8', and bond them using the existing #6 jumper (30' length), is that ok, even if something is grounded to each rod (electric to one, cable to other)?
Should I ground the metal porch to the rods (or perhaps to the grounded antenna mast, which is grounded to the rods)?
If I leave the phone line grounded to the water pipe, does the pipe need to be bonded to the ground rod (my understanding is that grounding electrodes are supposed to be bonded together)?
Am I correct to bond the cable ground rod to the main rod? Was it unnecessary?