ST 052

The Multi-Zonal Remote Radiomonitoring System ST 052 is designed to detect the sources of electromagnetic radiation from devices intended for the unauthorized obtaining of information (eavesdropping devices).

 
The ST 052 comprises remote modules (hereafter, “M”) that are placed in locations where the use of unauthorized radio transmission devices is suspected. A single M covers a local zone* and monitors the electromagnetic situation within in.

 
The receiver of M consists of two blocks: a high-speed scanning receiver with a frequency range of 70–1,200 MHz and a wideband fi eld detector with a frequency range of 900–6,000 MHz.
Via a radio channel, data from M is transmitted to a base transceiver station
connected to a PC.

The range of stable radio exchange of the ST 052 is up to 100** meters in
buildings and up to 1,000 meters in open areas. The maximum number of simultaneously operating Ms is 32. The specialized software allows for controlling the system and displays information from M on a computer monitor.

 
The following information can be displayed: alarm signal, signal level, data transfer protocols
(GSM, DECT, Bluethooth, WLAN), and spectrogram (with a frequency range of 70–1,200 MHz).
In addition, the system logs the events to a log file.

*A local zone is space limited by the sensitivity of the scanning receiver and eld detector of M and interference in the zone of monitoring.

**This number may vary in a wide range depending on the structure of the building, interference, and transmission frequency.