NR-900EK Eagle (NLJD)

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Non-linear Junction Detector (NLJD)



Designed for:
Detection of mines and explosive device with electronic fuses (activation system) concealed on the ground surface, slightly in the ground (snow) or soil, under the road pavement, in concealed in building structures and within various facilities.

Detects: NR-900EK
Communicational transmitters & receivers as well as alarm and remote control system facilities.
Electronic and electromechanical timers.
Acoustic, magnetic, optoelectronic sensors and midget TV cameras.
Built-in metal-ware as well as hidden machinery and appliances.
Domestic electronic units and alpine skiing in snow traps.
Detector can be used as well for detection concealed metallic devices and appliances.
The device is highly effective as well in searching electronic items and mountain sky outfit under the snowdrift.

Roads, terrain and objects inspection for mines, improvised explosive devices (IED) and other explosive appliances with electronic components.
Searching for hidden caches with weapons, ammunition, explosive devices and communication facilities.
Questioned items investigation, searching for subversive and terrorist devices and arrangements.

Long range of electronic device detection (up to 30m).
Electronic facilities localization in any operational mode: active, stand-by or even switched off installed behind walls, fences, etc.
Equipment design allows its usage in tactical airborne missions.
Efficient use in search/reconnaissance missions.
High searching rate.
Safe to handle, user-friendly design.
Long-term operation facility in field conditions.

Twochannel high sensitive receiver for 2nd & 3rd harmonic reception guarantees an effective reduction of false alarm, caused by outside metallic objects.
Circular polarization of transmitting & receiving antennas avoids the risk of tar get loss under the variation of antenna unit orientation.
Four step receiver sensitivity control (0, 10, 20 and 30dB) allows operator to adjust adequate Detector parameters to outer EM noise conditions.
Transmitter output adjustment allows operator to suppress probing signal intensity for better operation safety.
For operator handiness main units of Detector are placed in corresponding pockets of a special vest.
Antenna module are united with control panel and represents a single arrangement with convenient handle.
Reliable and durable rechargeable Ni-Cad battery ensures longterm continuous operation.
Dedicated charger unit provides an optimum operatorfree charging mode.
Sturdy weather dust-proof housing assure right operation in hard environment condition.
Discovers electronic devices concealed by various obstacles.
Easy handling, uptodate design, usable display, reasonable weight.

Technical characteristics:
Probing signal frequency: 848Mhz
Probing signal: Pulse
Power output power (switchable): 30/200W
Receiver: 2-channel (2nd and 3rdharmonic)
2nd and3d harmonics sensitivity of the receiver: -150dB/W (-120dBm)
– visual: LED-display
– audio: headphones
Power supply: Ni-Cad rechargeable battery, 6V/7Ah
Current consumtion: not more than 500mA
Start-up time: not more than 10min
Continuous operation time with fully charged battery (under nor. environmental condition): not less than 8h
Operation temperature range: -30ºC +50ºC
Weight (ready for operation/in standard packing/antenna head)

Non Linear Junction Detectors:
In 1970s Americans detected wires in the concrete columns of the American Embassy in Moscow. The bugs were installed during the construction of the building, and there was no other way to extract them except for complete destruction of the building. One shouldn’t neglect the importance of correct frequency tuning of NLJD equipment for different types of search environment (for instance, concrete walls). Bugs or wires (as covert listening devices are commonly called) can be set up deep in concrete columns and they still will be transmitting signals. Non-linear junction detectors (NLJD) are devices designed for search and detection of different types of covert listening devices, various electronic appliances and transmitters comprising of semiconductors. The principle of NLJD equipment operation is based on emission of high radio frequency energy in an area. Detectors have a sensitive receiver designated for reception of objects’ echo signals which, for operator’s convenience, are marked down with sound or displayed on graphical user’s interface. Depending on the model, non-linear junction detectors are capable of detecting almost any electronic appliance in any operational mode: active, stand-by, switch-off. The designation of such devices consists in detection of radio microphones, microphone amplifiers, dictophones in premises (walls, floors, ceilings, furniture, etc.). Non-linear junction detectors acquired a reputation as perfect means of counter-espionage, as embassies and other diplomatic posts are known to be most popular targets for eavesdropping equipment. Specific models of NLJD are used by the police in search for weapons during events involving great masses of people. Detectors are used for providing location secure from covert listening devices in different organizations. Non-linear junction detectors can serve multiple purposes and have a wide range of implementation, starting from ground detectors up to equipment used for detection of mobile phones. Wide range of NLJD is presupposed by the type of material or surface for search operations – ground detectors are preferable for object detection in soil, portable detectors tuned to appropriate frequency are better in search within wooden furniture. Non-linear junction detectors have a very peculiar designation, therefore their usage is conditioned by goals set by customers. Taking into account great variety of NLJD equipment there is a specific model for any purpose you may require. Current NLJD products line include models for various applications.

Why Non Linear Junction Detectors?
NLJD technology has proven to be most effective in detection of semiconductors containing multiple layers of silicon, a P-Type and an N-Type. The point where they meet is called a Non Linear Junction.Non Linear Junction also appears in nature: dissimilar metals in contact with one another; the rust on metals resulting from corrosion.