Due to the overwhelmingly positive reviews I decided to order the antenna, even though we have to rely on an external antenna here with us (Marl / Westfalen) as recommended or receive prognosis (ueberallfernsehen.de). This was for practical and technical reasons, not in question (cumbersome installation of the antenna cable out of the apartment into the open air). An existing and active rod antenna with 18dB gain "failed" in nachzuvollziehender way more than miserably. The TechniSat Digitenne TT1 it creates in (admittedly very) precise alignment near a window and full amplifier output (36dB) to replace the actually predicted external antenna without any reception problems in everyday life.
Because of this and also because of the price and the price / performance ratio: a very clear recommendation!