Non-linear junction detector Lornet Star 24

Capabilities

The removable telescopic arm allows the operator to easily turn the device from search to inspection mode and back;
Maximum efficiency of searching for any electronic devices in the most difficult conditions when used with other replaceable antenna modules Lornet Star;
Additional battery with a charging time significantly less than the discharge time allows, if necessary, to carry out round-the-clock operation of the device;
The appearance of the device resembles a manual metal detector and is therefore convenient for inspection of individuals after passing a frame metal detector;
The small thickness (22 mm) of the antenna module, the compact design and the low weight of the device make it possible to carry out search operations in a limited space and hard-to-reach places;
Two types of radiated signals: pulse modulation of the carrier frequency with a ratio of 44 (Pulse) and continuous wave (CW);
Distinguishing (identification) of electronic components from natural semiconductors (rust, metal-metal contacts, etc.) in CW mode, by listening to the signal from the output of the amplitude detector through a built-in speaker or headphones when receiving the 2nd and 3rd harmonics;
The CW mode can be used to detect working analog radio microphones due to the occurrence of acoustic binding;
Additional assessment of the levels of the 2nd and 3rd harmonics by ear according to the frequency of clicks played through the built-in speaker or wireless headphones
Automatic search for the frequency channel with the lowest level of interference for operation in a complex electromagnetic environment;
Automatic and manual adjustment of output power;
Manual adjustment of receiver sensitivity.

Technical Specification

Transmitter

Operating frequency range	2,406 - 2,414 MHz
Two types of radiated signal:
Pulse - Pulse modulation of the carrier frequency with a ratio:	44
CW - Continuous carrier frequency radiation:
Maximum peak radiation power in pulse mode (Pulse)	10 W
Maximum average radiation power in pulse mode (Pulse)	230 mW
Maximum radiation power in continuous mode (CW)	200 mW
Manual power adjustment range	20 dB
Width of the radiation pattern	90 degrees

Receiver

Frequency range:
The second harmonic	4,812 - 4,828 MHz
The third harmonic	7,218 - 7,242 MHz
The receiver's sensitivity is at least	-110 dBm
Dynamic range of the receiving path (including the attenuator)	24 (10) dB
The number of frequency channels when automatically selecting the receiving channel	5

Battery

Li-ion battery:
Voltage	3.6 V
Capacity	7.8 A-h
Continuous operation time at maximum power not less than:
In Pulse mode	3 hours
In CW mode	1.5 hours

Dimensions and weight

Device dimensions:
When operated	39x10x6 cm
When folded	22x10x7.5 cm
Weight when operated	700 grams
Bag size	26x14x16 cm
Weight in transport package	1.7 kg
Transport package size	32x28x12 cm
Weight in export package	2.8 kg

Operating conditions

Operating temperature range

from +5 to +40°C

Package contents

Replaceable antenna module Lornet Star 24;
Handle with control panel with built-in battery container;
Removable telescopic arm;
2 (two) replaceable (Li-ion) batteries (12V);
Battery charging container;
Charger unit for the 220V network for batteries;
Headphones;
Transport packing bag
Documentation (operator's manual, datasheet).

Application

Counterintelligence (TSCM)

Search for electronic devices in the premises, including small-sized ones (bugs, voice recorders, etc.) that are both on and off;
Search for unauthorized electronics in vehicles, including RFID tags, GPS trackers, etc.;
Inspection of people after passing the frame metal detector for the carriage of prohibited electronics (case-free digital voice recorders, SIM cards, etc.);

Anti-terror

Inspection of items (parcels, suspicious bags, etc.) for the presence of electronic components of explosive devices and metal projectiles.

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FAQ ABOUT non-linear
junction detectors
Lornet

What is the non linear junction detecor?

Non-Linear Junction Detector (NLJD) is a specialized electronic device used primarily for detecting hidden or concealed electronic devices. It operates on the principle that many electronic devices, whether active or passive, contain non-linear junctions such as diodes, transistors, and other semiconductor elements. When these junctions are exposed to a high-frequency radio wave, they produce harmonics — signals at multiples of the original frequency.

### Working Principle:
1. Emission of High-Frequency Signal: The NLJD transmits a high-frequency microwave signal.
2. Detection of Harmonics: It then listens for the harmonics generated by the non-linear junctions within electronic devices. Typically, NLJDs focus on the second and third harmonics.
3. Analysis: The NLJD analyzes the returned signals. A strong harmonic signal generally indicates the presence of a non-linear device or component, suggesting an electronic device or circuitry.

### Applications:
- Counter Surveillance: To detect hidden surveillance devices or "bugs", which may be transmitting or recording sensitive information.
- Security Sweeps: In secure facilities, NLJDs are used to ensure that no unauthorized electronic devices are present.
- Correctional Facilities: To find contraband electronic devices like cell phones hidden by inmates.
- Military Operations: To detect hidden electronic devices in various environments, ensuring the safety and security of operations.
- Technical Surveillance Countermeasures (TSCM): Used by professional TSCM service providers to detect hidden electronic spying devices in commercial, residential, or governmental buildings.

### Features:
- Portability: Many modern NLJDs are designed to be handheld and portable, making them easy to use in a variety of environments.
- User Interface: These devices often come with visual and audio indicators to help the user pinpoint the location of a suspected electronic device.
- Discrimination: Some advanced models can differentiate between natural and artificial non-linear junctions, reducing false positives from materials that inherently have non-linear properties.

### Limitations:
- Material Interference: Certain materials, such as dense metals or heavy shielding, might reduce the effectiveness of NLJDs.
- False Positives: Natural non-linear junctions in some building materials or environmental elements might trigger false positives if the device isn't sophisticated enough to discriminate effectively.
- Depth Penetration: The depth at which an NLJD can effectively detect hidden devices may vary based on the material and density of the obstacles.

Overall, NLJDs are essential tools in the field of electronic countermeasures, providing a non-invasive means to detect and locate hidden or unauthorized electronic devices.

Lornet Star 24