'O.T.',
There are two different kinds of 'grounding', safety grounding and RF grounding. The safety grounding deals with not getting shocked by improper wiring, lightning, etc. RF grounding deals with the types of antenna used. Most typical antennas don't require an RF ground. If the antenna end of the coax connects to two 'things' (vertical element and radials for instance), it probably doesn't need an RF ground. Lots of "if's" and "buts" in that so do all the applicable reading you can about it. Unfortunately, there isn't a "one size fits all" thing about grounding, just depends on what you have to work with, sort of. Have 'fun'... lots'a 'fun'.
- 'Doc