Parabolic WiFi antenna by Ubiquiti for outdoor installation. Parabolic WiFi antennas function similarly to directional antennas, meaning they amplify the signal of our wireless network in one direction but have a much greater range than those. Their design allows us to target a specific point and, with the help of the dish they feature, to diffuse the signal over an area. It has a gain of 19dBi. If your goal is to transmit a signal over a long distance, you will need an antenna with higher gain. Conversely, if you want to improve the signal in your yard, high gain is not such a good idea.