Review on 📶 Enhance your WiFi Signal with CHHLIUT WiFi Antenna 2.4G SMA Male Window 3dBi - Boost WLAN Router Performance! by Michael Olsen

Purchased to improve stability, not increase dB gain. The antennas are small enough to be hidden near a window or somewhere with less interference. We checked several places and found that antennas can actually overload the signal and increase loss. We have found a balance with the position of the antenna. We recommend testing in some cases and even using only one antenna if your tests show that the signal improves with only one antenna. Please check this before installing the antenna and also before you consider the valid ones defective.