I just picked one of these 7.5 footers 1/4 mile from home in nice condition(for 2o+ yrs).
Got the dish complete with extra wire, 14 ft pole, Venture motor, GI 450i analog receiver for $100.
I transported the dish face down on some 8 ft 2x4s screwed down to 2x4s mounted in the stake holes of my old pickup, lightly tied down of course so as not to bend anything.
My dish was sans the lnb cover as you can see, so there was nothing left to id the maker of the dish.
Are most mesh dishes like these all aluminum(excepting the polar ring mount of course)?
Good luck with your project there in Baja. When I get mine back up in the air I'll upload some pics.