For your hacking pleasure:
www.lazygranch.com/temp/vectors.kmz

The 49deg vector is for the facility at the AT&T site. I'll do an
overlay viewshed tonight for line of site.

The tower150 vector points to a tower I saw at that location. [Easily
seen with binoc. I need to dig up the photo, but I could barely see
the tower in the viewfinder.]  I was trying to map the points where
Bald Mountain can't see. NOBALDA1 is pretty well defined, that is the
ridge that blocks the baldocam isn't ragged. Further down the road,
the point where bald can see again is a bit fuzzy. Take your choice
between NOBALDA2 or NOBALDB1. The Bald Mountain overlay can be found
here:
www.lazygranch.com/google_earth/nellis/bald.kmz
Pretty damn good computer analysis IMHO. Note that the experiment was
done double blind. That is, I didn't have the Bald viewshed limits
handy when I drove the back gate road looking for the baldo exclusion
zone.

I should point out that the tower150 was the only structure I spots
from the Baldo exclusion zone, which I think we should start calling
the BEZ. ;-)

I don't know what the new tower at the back gate can see. I think I'll
look for a used transit so I can measure angles accurately to compute
height. I think Harbor Freight has a Chinese knockoff.