 The links are usually arranged as a point-to-point setup to permit the use of these antennas.This also permits the link to have better speed and or better reach for the same amount of power.These antennas are typically designed to be used in the unlicensed ISM band radio frequency bands (900 MHz, 1.8 GHz, 2.4 GHz and 5 GHz), however, in most commercial installations, licensed frequencies may be used to ensure quality of service (QoS) or to provide higher connection speeds.