Right, just a typo.

Why do you need DC to pass through the protector? This is one of the things I don’t understand!

Fair warning, this rabbit hole goes deep … very deep!

I haven’t met a shallow ham hole yet!

laws and requirements for grounding (and associated lighting protection) vary across the globe and within a country

Yes, was curious to get an international picture of practices here…

your best bet is a locally licensed electrician or better yet, one who is also an amateur.

Fair enough, you’ve inspired me to at least ask my club if we have an amateur radio electrician in the area. I do have a pretty simple station, however, so I had planned to do this myself. [edit: grammar fix]