I'd take it, if it was free. If you can get a hold of, or make, a tripod, you could set it up over it and hook a chainfall to it and unbolt the mount and then cut the pole out from underneath it and then lower it gently to the ground in one piece. Judging from the pictures, that dish looks huge and it'd have to be a tall and wide tripod, but that's what I would try, if possible.
Or, if you're lucky enough and there's a sturdy tree limb above it that a chain could be thrown over....
Do you know how big it is? Looks in decent shape still.