The apartment is located in the basement and has with E plus virtually no reception inside the home, unless you lean to the phone at the ear directly to the window. Should be covered at least. 3 m away from the window. That's why I bought this unit together with the Wittenberg outdoor antennas LAT 54 GSM / UMTS and alternatively the disc mount antenna GSM D / E / UMTS network. With two antennas no useful improvement was observed. The reception beam number increased at rest sometimes briefly from 1 to 2 - 3, but could never exist constant and broke the phone immediately back together and the call was terminated involuntarily. I have a feeling that the signal is passed in any way to the stable cell phone on the box. The function of the box is illogical to me, because the box is completely empty inside, only the antenna cable is glued to the top of the plastic bearing surface. As a layman, I see no logic in it, because then I could put my phone directly to the antenna cable or attach the antenna to my phone. Who would have the same effect. But as I said I am not a technician.
