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This device is designed to detect covert electronic devices containing semi-conducting components. The device allows inspection of light constructional elements of buildings, furniture etc (in the office area) and detection of covert surveillance devices (radio microphones, microphone amplifiers, tape and digital recorders etc.) in different operational modes: in a transmission mode, switched off or in stand-by mode (for remote controlled devices). | Operational Principle: | Modern electronic devices usually contain semi-conducting components (diodes, transistors, computer chips etc.) These components reach to a high frequency signal transmitted by non-linear junction detectors (NLJD), reradiating the energy back on doubled and tripled frequencies of the flooding signal. The effect allows effective detection of electronics devices in office areas, inside walls, furniture etc. |
| Features: | | | • | The lightweight body and built-in cable system between the antenna and transceiver make the device compact and easy to use. | | • | The advanced technology within the detector, combines the advantages of both pulse and continuous wave based NLJDs. | | • | The extra antenna head LED display shows the received signal strength for both 2nd and 3rd harmonics. |
| Transmitter | | Frequency | | 848 MHz | | Power: | | | | sweep mode | peak pulse 2W (+33 dBm)
(average continuous 0.4W (+26dBm)) | | signal's curve extraction mode (20K) | average continuous 2W (+33 dBm) | | Control range of output power | 10 dB (step 5 dB) | | Modulation | | | sweep mode | | amplitude - pulse (duty cycle 5) | | signal's curve extraction mode (20K) | CW | | | | Receivers | | Frequencies | | 1696 MHz
2544 MHz | | Sensitivity (with digital processing) | not less than - 162 dBW (-132 dBm)
(at S/N ratio - 6 dB) | | Attenuator levels | -10, -20, -30, -40 dB | | | | Antenna | | Polarization | | circular | | Ellipticity ratio | not less than 0,75 | | Gain of transmitting antenna | not less than +6 dB | | Gain of receiving antenna | not less than +8 dB | | Main lobe angel | no more than 40° | | Back lobe level | no more than -15 dB | | | | Output | | Audio | | tone (400 Hz) | | Display | 2 x 16-dot LED scale (resolution 2,5 dB) | | Dynamic range of the display | 40 dB | | Displayed data on the control panel | level of 2nd harmonic
level of 3rd harmonic
receivers' attenuator status
output power status
headphone connection status
(2nd or 3rd harmonics' outputs)
20K mode status | | Displayed data on the antenna head | level of 2nd harmonics
level of 3rd harmonics | | | | Test target | Detection range in open space (in mode
with maximum transmitter output power
and maximum sensitivity of receivers) | | not less than 0,4 m | The location accuracy of the test (in mode
with minimum transmitter output power
and minimum sensitivity of receiver) | no worse than 0,1 m | | | | Power requirements | | Battery | | 6 V (2 battery packs) | Continuous operation time from one
battery pack | | | in the sweep mode | | 5 hours | | in 20K mode | not less than 1,5 h | | | | Dimensions | | Antenna head | | ø194 mm | | Extendable handle (maximum length) | 980 mm | | Transceiver unit | 177 x 140 x 60 mm | | Device in carrying case | 485 x 390 x 140 mm | | | | Operation conditions | | Operational temperature range | | +5 ~ +50°C | | Limiting temperature range | -40 ~ +60°C | | Humidity (at +25°C) | up to 80% |
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