The product is actually very good but unfortunately not in it what is described here is only double shielded how much DB I can not say. In my signal strength and signal quality is now always up 100% in advance (with certain broadcasters RTL and co. Only 85% quality but strength always 100% and the other channels also both 100%) and very little screen Error Rate.
Nevertheless there 4 stars but it should urgently the product description be repaired.