Set 2 of these antennas on a Lancom 1781EW in the 5.8 GHz band a, which is not visible on purpose in a storeroom of the office. Thus, the range of the WLAN is appreciably restricted. With these antennas is compared to the original, a very significant gain achievable, it works now as if the wireless router would be in the same room.
Test manner compared to a Fritz! Box at home with the original LANCOM antennas, in turn have the Lancom antennas over several rooms significant advantages over these antennas.
It also depends on the underlying wireless station. Provided that the coordination fits, these antennas are in any case a recommendation.