[jrgagne99]

I did a bit of research on the mast and coax grounding.

Mast grounding: As I understand it, the main purpose is to prevent static charge build-up at the antenna, thereby reducing the likelihood of a lightning strike. Connection to any decent ground-stake should suffice for this.

Coax shield-grounding: This should be tied to the same ground that the house and its appliances (e.g. my TV) use. Anything else could result in a floating ground or a ground loop.

Therefore, I think I should move my grounding block to the house-side so that I can utilize the house ground-stake, rather than my ground-stake at the tree. Since the entry point of my coax into the house is on the opposite side of the house from my house ground-stake, would it be ok to just connect the grounding-block to the ground-wire (bare wire) of a convenient 110V outlet, such as the outlet that I'm using to power the preamp's power-inserter?