Lornet Star (NLJD)

Non-linear Junction Detector (NLJD)



The only multifunctional non-linear junction detector featuring an integrated spectrum analyzer of 2nd and 3rd harmonics and changeable transmitter-receiver antennas of 3 frequency bands: 800MHz, 2400MHz and 3600MHz. Integrated spectrum analyzer can significantly improve the identification of semiconductor elements (only for antenna 2400MHz).

Competitive advantages:
Integrated spectrum analyzer of 2nd and 3rd harmonics can significantly improve the identification of semiconductor elements (only for 2400MHz)
The operator can analyze not only the amplitude, but also the spectrum of 2nd and 3rd harmonics signals re-emitted by a non-linear object, relative to probing frequency, which increases informational content of the non-linear features of the object. In particular, that considerably facilitates decision-making on the separation of corrosive and artificial semiconductors.
There is a built-in module measuring the reflected power of the probing signal from the research object, which allows it to estimate the extent of the reflecting surface of the object.
Use of 3 replaceable transmit/receive units significantly reduces the probability of missing a thing at search operations providing major advantages in all three ranges:
– 800MHz all-weather and relatively low attenuation of signals in dense medium (brick, concrete, etc.),
– 2400MHz the opportunity to detect SIM cards and small (about 1 cm?) semiconductor devices,
– 3600MHz providing spatial selection, which facilitates search operations in premises containing legal electronic devices.
Time to replace transmit/receive units and extension rod will not exceed a few minutes.
Reliable detection of the SIM-card at a distance of 15cm (2400MHz) and 60cm (3600MHz).
For efficient identification of artificial and natural semiconductors a visual spectrum analyzer is used or a listening through a built in speakerphone or headphones after AM decoding of the signal in continuous mode is done.
Lornet is equipped with an automatic system of protection against centered jamming by criterion of a minimum noise in the reciever path of the 2nd harmonic.
Electromagnetic radiation towards the operator is many times less than one setted by the Regulator.

Delivery set:
Control unit Lornet Star
2 removable (LI-ION) rechargeable batteries
Batteries charging container
Batteries Charging adaptor (220V)
Lornet Star basic Package includes 2400Mhz antena with spectrum analizer (24s), but the deliver yset can include up to 3 additional Interchangeable Antenna Unit (IAU) from these options:
– IAU Lornet Star / 08 (optional)
– IAU Lornet Star / 08s (optional) with spectrum analizer
– IAU Lornet Star / 24 (optional)
– IAU Lornet Star / 36m (optional)
– Transportation bag
– Documentation (user manual)

Technical characteristics:
Probing signal: 2400MHz, 800MHz (optional), 3600MHz (optional)
Type of probing signal: pulse / continous
Output power (frequency/pulse/continous):
– 2400Mhz/10W/0,3W
– 800Mhz/10W/03W
– 3600Mhz/18W/6W
Receiver sensitivity: -110dBm (-140 dBW)
Dynamic indication range of 2nd and 3rd harmonics: 24db
Manual power adjustment range: 20db
Device dimension:
– 2400Mhz spectrum – 40x20x7cm
– 2400Mhz – 40x20x7cm
– 800Mhz – 40x20x7cm
– 3600Mhz – 40x20x20cm
Telescopic rod size, 2 items: 86х4х4cm, 54х4х4cm
The bag dimensions: 65х30х20cm
Operating temperature: +5…+40oC
Weight without telescopic rod: 1kg
Maximum weight of the devices in the bag: 8kg
Telescopic rob weight: 0.2kg
Battery life at max power (frequency/pulse/continous)
– 2400Mhz spectrum/2.5h/1.5h
– 2400Mhz/3h/1.5h
– 800Mhz/3h/1.5h
– 3600Mhz/2.5h/1.5h

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.