Knowing the noise level measured in saline medium of -118dBm we designed and constructed a complex antenna system with which we measured the signals injected from a generator in this environment. Measurements made with the antenna system in saline environment, have highlighted the signal level of -61.5dBm, much lower than until now. Thus, the attenuation of the saline medium was determined for the horizontal plane compared to the previous measurements made for the vertical plane.