B.A. Atajants - Ph.D. (Eng.), General Director, LLC «Kontakt-1», Ryazan. E-mail: market@kontakt-1.ru V.М. Davidochkin - Ph.D. (Eng.), Head of Department, LLC «Kontakt-1», Ryazan. E-mail: skb@kontakt-1.ru V.V. Ezerskiy - Dr.Sc. (Eng.), Professor, Ryazan state radio engineering University. E-mail: ezerski@yandex.ru