I bought this antenna here on Amazon and am very satisfied with the device. I use it together with a Technisat DigiPal 2 that supports the 5V supply and therefore provides this antenna via the antenna connection with electricity. The connection of the supplied AC adapter is not required, which also saves additional cables. I live about 30-35 kilometers from the DVB-T transmission masts away, where I live is to receive an external antenna is recommended. I have previously used a passive rod antenna, which I was able to receive some channels. However, the antenna was very sensitive to changes in location and also the teletext did not work due to bad signal. By using the active Telestar Antenna 7 I now receive all stations with a much better level. Now the teletext works properly. Also, I now receive in addition the station sixx, Tele5, the fourth and QVC, which I have not previously received. I am therefore very pleased with the reception of the new antenna, also with the price.