I bought this whistle so as not to lead the wire from the router to the desktop computer in the next room (1 brick wall, about 5 m in a straight line). Communication is needed constant and stable (remote work via RDP). In practice, the connection appears and disappears when it wants to, it is impossible to work. At the same time, the wifi signal is excellent, the laptop on the same table keeps the connection without any complaints. Router Asus RT-AC68U
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