V.F. Akimov, A.L. Dzvonkovskaya, L.I. Dzvonkovsky, Y.K. Kalinin, V.A. Kuznetsov, N.P. Sergeenko, A.A. Vas-kin

Empirical interfrequency intergrated distribution approximation results are considered for decameter wave radio equipement signal intensity using exponential-hyperbolic Frechet functions. The expedience of new nonholomorphic model with Frechet distributions of the first and second orders for upper and lower quantiles respectively is determined. It is shown that lower quantiles (percentiles and deciles) of interfrequency signal intensity distribution are sensitive to anthropogenous macroscale ionosphere irregularities that are at the distances of 3000 km and can be observed in the mainlobe of a receiving antenna pattern.