Looking to ground roof mounted mast - No ground rod at service entrance
Yes it's likely that merely doing what the cable guy did meets &quot;legal code&quot; for that county.
I prefer to treat antennas like lightning rods since that's exactly what they become during a lightning strike.
So I drive in a 8 foot dedicated ground rod and run a minimum of #10 solid copper or #8 solid aluminum wire to the antenna mast.
Then run a #6 copper bonding jumper from the rod to the main electrical ground to meet code.