[mpiscitello]

I just installed the mast assembly for my new AT9 this past weekend and have been concerned about the whole grounding aspect quite a bit - I have a quad grounding block (grounded) mounted near the dish and that is bonded to the dish "base" which is where the dish instructions say to put the grounding screw. The part that really confuses me (easily done these days) is that the entire dish assembly is powder coated. The dish reflector mount "clamps" to the top of the mast effectively a paint to paint interface. So the base is effectively grounded but the mast, dish & lnb's are not!!?? Do the coax connections (since the coax is grounded) in the lnb's provide any protection? Has anyone else thought about this?
Maybe I am just overthinking this...

 

[kay]

You are overthinking this. There are connection points (specifically where the bolts go through) that have no coating on the inside, and thus contact is made. If you were to scrape a small area clean on the back of the relfector and test the resistance between that and the based of the mounting with a multimeter, the resistance would be very low. The coax itself and the LNB is intentionally isolated, and it is grounded by running the 4 coax cables coming out through a coax grounding block - something it sounds like you already have.

Just make sure your grounding block is properly grounded, there are all sorts of grounding jobs out there that are horribly improper.

 

[mpiscitello]

I tend to overthink things sometimes...

I spent a lot of time getting the system properly grounded - so I got concerned when I looked at the top of the mast and saw that it is completely painted and then inside of the dish mount clamping sleeve and saw the same without any bare spots that would make contact to ensure continuity. I guess once I get the dish securely mounting on the mast I'll check with a multimeter and see what I get.