I have this Edision QSL 4 Quad LNB against in the tooths Alps - exchanged LNB. I have 3 SAT - cable hanging off. And a performance gain of min. 10 dB, at 2 terminals of the level is depending on the broadcaster almost 100%. At the 3rd connection level is somewhat lower. But that is on the 20-year-old coax - cables, then there was this high-performance cable with 5 - not yet screenings. I will therefore replace this cable.