My RT-AX98U has three antennae
You mean omnidirectional(omni=all, uni=one).The original router antennas are uni-directional (transmitting the same way in all directions) - so you better let them point to "all directions" and let the beamforming function to the job to optimize the signal for the devices.
In case you want to optimize the direction of the WLAN signal yourself, you should go for alternative antennas - but then the beamforming will not work anymore as designed,
Yes, but used it wrongly - now corrected my original posting!You mean omnidirectional(omni=all, uni=one).
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