B.A. Atajants - Ph.D. (Eng.), General Director, LLC «Kontakt-1», Ryazan. E-mail: market@kontakt-1.ru И.В. Баранов - Ph.D. (Eng.), Leading Engineer, LLC «Kontakt-1», Ryazan. E-mail: postmaster@ivb.ryazan.ru В.П. Рынин - Ph.D. (Eng.), Associate Professor, Ryazan state radio engineering University. E-mail: Rynin_homebox@mail.ru