A rely off topic question.

Finally my parents have moved to Spain, I have waited for this in twenty years. Any way when I visited them I noticed that there is a sort of micro link system for foreign TV like TV4, and that the provider uses two different kind of ways to distribute the signal. They use an old fashion MMDS system, and that system is very easy to tap in to, but they also started to use a type of digital transmission system called AMDS. It looks like an ordinary digital SAT system except for the dish that has to be mounted upside down because of the low azimuth angel.

My question is if there is anybody how knows anything of system’s like this and, if so, what type of LNB:s your suppose to use.
\mala