So far we have used a 40dB antenna (Vivanco TVF 20)
the meticulously aligned to the window and depending on the broadcaster, mood and moon stand often sound / picture skips had ...
According to this test SV 9395 is to be the currently strongest indoor antenna.
Accordingly great was the disappointment when the One received no transmitter.
A replacement, the suspicion was confirmed that the first antenna was broken.
The new one has on all channels (42 instead of 30) full reception.
Even then, if the antenna is located 2 meters from the window and the amplifier is at its lowest setting.
Highly Recommended.