The resonance parameters are depend essentially from ionizing radiation sources located on the distances, that can essentially exceed the charged particles path length (1 m and more). <...> Connection of the spatial configuration of a sensitivity area with the electric potential distribution, and also the possibility of identification of the radiation source type by the analyzing of the resonant characteristic parameters change is shown. <...> PACS: 52.80.Hc, 52.90.+z, 07.07.Df, 07.77.Ka, 29.90.+r Keywords: high-voltage gas discharge, resonance, ionizing radiation sources, sensitivity area, identification of radiation, potential distribution. <...>