FIELD: radio engineering, communication.
SUBSTANCE: invention can be primarily used for remote radio interception of voice information circulating in a secure facility with limited access. A method for radio interception of voice information from a secure facility is based on receiving and demodulating a high-frequency radio signal reflected from an object located in the secure facility, which vibrates under the action of acoustic waves generated by speech, wherein radio interception is carried out at the carrier frequency of the most powerful radio signal of one of local information communication stations. This most powerful signal is detected by scanning air with a scanning high-frequency radio receiver.
EFFECT: ensuring stealthiness of radio interception due to absence of a telltale feature in the form of a specially generated probing radio signal.
2 dwg
