My one looks like that here. I use the two normal antennas supplied with the Radarbox, 1 GP-1090 and two Skysearcher antennas. My location is not very good for the antennas. Hills and buildings and some other stuff, but i take what i have. My location is at the very southwest area of Germany and my two systems are just able to cover the Swiss - German border and a part of the Swiss - French border. I`m very lucky to receive aircraft southwest and southeast until about 150 NM. Other directions are limited to a much closer area. As long it is possible to pick up some US military aircraft it is o.k.
Rolf