ST 052 The Multi-Zonal Remote
Radiomonitoring System
::User's
Manual ::software
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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), such as:
- radio microphones;
- telephone radio transmitters;
- radio-stethoscopes;
- hidden video cameras equipped with a radio channel for
transmitting information;
- unauthorized radio stations, wireless phones, and phones
with wireless extensions;
- unauthorized use of GSM and DECT cellular phones
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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 field 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. Generally,
this number is determined by the ability of the monitor to display the
necessary information and scanning intervals of M (see Timing of data
transmission between M and the base station).
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.
Advanced settings allow for finer customized setup of the system to
suit the requirements of the particular location.
*A local zone is space limited by the sensitivity of the scanning receiver
and field 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.
| Specifications |
| M |
Frequency range of the scanning receiver |
70-1,200 MHz |
Field detector |
900-6,000 MHz |
Sensitivity at the input | |
70-1,200 MHz |
<0.1 mV |
900-6,000 MHz |
<3 mV |
Power supply |
3.6 V (Li-Ion rechargeable battery)
220 V (power adapter) |
Current consumption | |
- standby mode |
0.1 mA |
- operation |
30 mA |
Dimensions |
85 x 53 x 21 mm (3.3 x 2 x 0.8
inches) |
| Base station |
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Dimensions |
120 x 80 x 32 mm (4.7 x 3.1 x 1.3
inches) |
| Radiomodem |
|
Frequency |
433/868/915 MHz |
Maximum output power |
12 dBm |
Data transfer speed |
19.6 bps |
Receiver sensitivity |
-113 dBm |
ST 052 box
content |
Name |
pieces |
| 1. Remote module (M) |
1-32* |
| 2. Base transceiver station |
1 |
| 3. Installation disc with software |
1 |
| 4. Data cable for the base station |
1 |
| 5. Transceiver antenna for the base station |
1 |
| 6. Transceiver antenna for M |
1-32* |
| 7. Receiver antenna for the field detector of M |
1-32* |
| 8. Receiver antenna for the scanning receiver of M |
1-32* |
| 9. Power adapter for M |
1-32* |
| *depending on the number of M |
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