szymonit928 wrote: Will it be the same on ac86u?
Walls, windows or air have some constant attenuation, depending on materials and frequency or distance.
If the wall attenuates, for example, 10dB on 2.4GHz, it means that depending on the level of the signal transmitted by the router, on the other side of the wall there will always be 10dB less signal level.
Pathologically:
Layout: router next to the wall --> wall --> measurement on the other side of the wall next to the wall.
Router #1 transmits at -20dBm --> behind the wall the signal is: -20dBm - 10dB = -30dBm
Router #2 transmits at -35dBm --> behind the wall the signal is: -35dBm - 10dB = -45dBm
