Abstract
Energy and cost efficiency are becoming criteria of increasing importance in the design of 5G radio relay lines, especially for areas close to water surfaces, where there is pronounced fading, which is characteristic of radio relay paths that pass on the surface of the water. In this paper, the research was carried out on two radio relay links with different frequencies- the first one at 8 GHz, and the second at 18 GHz, working in frequency diversity mode. To troubleshoot, the measurements were made during the shortest possible time, with fixed emissions to account any fluctuations in signal levels.