INVESTIGATION OF THE TELEPHONE'S EXPOSURE TO "HIGH-FREQUENCY PUMPING"

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Published Jul 15, 2025

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Анатолий Анатольевич Хорев
Тимофей Витальевич Чачилло

Abstract

The article presents the results of experimental studies of the possibility of intercepting acoustic speech information from a dedicated room using the "high-frequency pumping" method of a telephone device. It was found that the phone is subject to "high-frequency pumping" in the frequency range of 168-270 MHz. The dependences of the signal-to-noise ratio (in terms of the field strength of the emitted signal) on the power of the RF generator and the acoustic pressure level for the 230 MHz pumping frequency are obtained. According to the indicator of verbal intelligibility of speech, it has been established that the method of "high-frequency pumping" of a telephone in real conditions is not possible to intercept speech information from a dedicated room.

Article Details

Issue
Vol 2 No 56 (2025): Journal of the Ural Federal District. Information security
Section
Methods and systems of information protection, information security
Author Biographies

Анатолий Анатольевич Хорев

Doctor of Technical Sciences, Professor, Head of the Department "Information Security" of the Federal State Autonomous Educational Institution of Higher Education "National Research University "Moscow Institute of Electronic Technology" (MIET). 124498, Moscow, Zelenograd, Shokin Square, house 1, MIET.

Тимофей Витальевич Чачилло

Student of the Department of Information Security at the Federal State Autonomous Educational Institution of Higher Education National Research University Moscow Institute of Electronic Technology (MIET). Shokin Square, 1, MIET, Moscow, 124498, Zelenograd.