Mangosat performs a professional and very thorough RF interference (RFI) inspection. Other than trial and error, this is a highly technical operation, and only a few of our field engineers are capable of performing it.
Because it requires a lot of theoretical knowledge, practical experience, systematic analysing, lots of patience, and beyond standard (rather expensive) measurement equipment such as probes, special antennas and a spectrum analyser supporting the required functionality. Furthermore, there’s simply no trick (one can learn without understanding what you’re doing) that can possibly bypass the necessary steps in the process.
If done properly, such an exercise can take more than a day because you want to observe the behaviour of the frequency spectrum under test for at least 24h. Sometimes even longer.
The objective of this more scientific approach is to understand how disturbing signals interfere with our wanted signals, when, where and how it enters the system and how we can mitigate the situation.
Specific example: If interference is caused by reflection and we understand the basic facts, moving the satellite dish antenna 1 m either way can already give good results and there’s no further need for iffy constructions. Also calculated shielding in specific places around the antenna or feedhorn can do the magic (see picture)