Industrial Automatic Control Systems and Controllers Annotation << Back Development of an Experimental Stand Based on SDR Technology for the Study of Technical Channels of Information Leakage A.S. Porkhun, A.V. Dushkin, A.V. Gureev, Yu.V. Savchenko, V.A. Shcherbakov Among the active methods of obtaining acoustic speech information is the option of creating an information leakage channel using high-frequency irradiation of auxiliary technical means or semi-active laying devices installed in the room. In this paper, using a system analysis, the justification of the requirements for the technical characteristics and the scheme for constructing a device for detecting high-frequency radiation signals is given. This device is used to develop an experimental stand based on software defi nition radio (SDR) technology for the study of technical channels of information leakage. The ultimate goal is to create a mock-up of a means of detecting and suppressing receiving devices of high-frequency irradiation equipment based on SDR devices. The paper describes an approach to the creation of hardware and software parts of the experimental stand, and presents the results of research on the detection of signals in a wide frequency range. Keywords: acoustic speech information, acoustic speech intelligence, dedicated room, high-frequency irradiation, object of protection. DOI: 10.25791/asu.12.2022.1405 Pp. 40-48.