Yu.N. Parshin – Dr. Sc. (Eng.), Professor, Head of Department «Radio Engineering Devices», Ryazan State Radio Engineering University
E-mail: parshin.y.n@rsreu.ru
I.I. Frolov – Ph. D. (Eng.), Deputy Director STC, Ryazan State Instrument-Making Enterprise
E-mail: ntc@plata.ryazan.ru