do you see what I see ?
Now I'm even more confused than before.
While the mount may have once had several degrees of freedom (movement in different directions), it now appears to be braced and unmovable.
Even for EME, you wouldn't do that.
I'm wondering if it's a research site for measuring something in the atmosphere???
That would make sense, if the dish can look only directly "up".
I'm thinkin weather radar.
The other confusing clue is that it's well off the ground.
Why would you do that for any purpose?
And especially so if you can only look up?
PS: I agree with the 18 - 20 foot diameter estimate.
It's about the size of the car in the first picture.