A: In most cases, people asking these questions are somewhat familiar with millimeter-wave microwave radio, used at 23, 28 or 38 GHz. And it is true, that you have to build in sufficient margin in the receive signal level to accommodate the fading that occurs due to rainfall at those frequencies. However, even at millimeter-wave frequencies, a well-designed link should be very reliable 99% of the time. In addition, at 2.4 and 3.5 GHz RF bands, the frequencies that we are using, the attenuation of the radio signal due to rain is insignificant and so rain has no practical impact on the link reliability. | 
