Video tutorial for Kathrein antenna assembly and testing Kathrein antenna. In this video, I test the Kathrein antenna which I place in an area where there is only 3g signal, the end of the antenna I place in a room with poor signal, with a 20 meter long cable. In testing the antenna worked very well. Before using the antenna, the signal on the Huawei B320s 4g router, showed very weak signal strength, red and yellow indicators. By using this Kathrien antenna, the signal strength goes up, the indicator goes all green, RSRP, RSRQ and SINR goes green. Download and upload speed increased sharply. Even though I only gave this antenna a reflector from the lid of a biscuit tin and the height of the antenna was only 2 meters. #otakatikantena