Ensure the Antenna is Mounted Correctly
A 0dBi antenna radiates in a perfect sphere, when gain is applied to the signal, the radiation pattern is compressed vertically and stretch horizontally, creating a donut / disc shape.
The higher the gain of the antenna, the flatter and wider the donut shape is and the further the signal will travel. However, due to the flattened radiation pattern, there is less vertical tolerance and more precision is needed when mounting the antenna.
The router transmits a fixed amount of power, the antenna does not increase or decrease the power of the signal, it focuses the signal to help transmit over larger distances.
Are You Using the Right Antenna
High gain antennas are great for reaching large distances as long as the antenna is mounted at the correct angle to direct the signal towards the tower.
Lower gain antennas are great for when the height of the antenna or tower is a factor, as a larger vertical area is covered.
