My DVB-T indoor antenna Kathrein BZD 30 is an active antenna, but without connecting an external power supply - the amplifier is supplied via the antenna connection of my DVB-T twin tuner. Now I have allowed myself a new LED TV that has a built-in DVB-T tuner and this power supply for such antennas does not deliver. So I made myself at Amazon for a new active antenna with power supply to the search. And I came across this Spannungseinspeiseadapter. Because my DVB-T antenna has excellent reception characteristics, I wanted to keep this as possible and have ordered the adapter. Good Decision! Because that part works just fine! Example SAT1: the adapter without Empfanssignal maximum about 10%. With adapter between 90 and 100% !!! The worst of all the signal to be received by me transmitter is about 65% and is sufficient to consider all of!