The antenna is directional, so how can I determine the direction of the antenna?
Here's the answer.
A good signal coverage can be obtained if you place antennas with a correct polarization direction. From the following figure, you can see that the gain of an AP's omnidirectional antenna is the highest in the direction vertical to the antenna.
Figure 1 Signal radiation of an omnidirectional antenna
When an AP is placed horizontally or wall-mounted, the major lobes of antennas should be placed vertically to receive the optimal signal coverage and then it will have the best connection.
