Modeling of the heating the lower-ionosphere by modulated high-frequency radiation N. V. Lebedev, N. D. Naumov, V. V. Rudenko The 12th Central Research Institute Sergiev Posad-7, Moscow Region, 141300, Russia E-mail: jasmin@spnet.ru The modeling of the heating the lower ionosphere by high-frequency electromagnetic radiation was considered. <...> The results for electron temperature and ionosphere conductivities are obtained for quasi-longitudinal and quasi-transverse propagation of lower-frequency amplitude modulated highfrequency radiation. <...>