@zoltan in my opinion that is a fair assumption, ~5dB. Of course, I have no scientific proof that I am spot on with my aiming at all times, either, as it seems to vary a bit day-by-day using the bare LNB. I have seen days where it was possible to do -12 with the bare LNB, but it seems that is a stretch, and also seems to be quite critical to keep the LNB pointed spot-on for this good an SNR. Thanks for the view of the undressed Maverick MK1.
“This is proving that the “satellites experts” are not the best resource. In “theory” a 1/4” grid mesh would NOT be a great shield or reflector of a 11.9 GHz. In “theory” it would have to be almost a “solid”…"
I think the “satellite experts” likely have to lean toward general situations of “what works for sure” and what can be easily mass-produced and installed by some field technicians (installation mechanics) who have little or no knowledge of wave propagation or antenna theory. And I agree also that with this type of experimentation, we may accidentally stumble right past a good solution due to our own ignorance of some of the laws of physics, or we may, in the same iteration, fall into an occasional win. My accumulated opinion thus far of all the things we have tried, perhaps this one is a “tad” better in some ways, but it is yet also an awkward device to build and work with. And true, this all still begs the question, do we really know for sure what it is that we are shielding from?