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Lornet 24 Non Linear Junction Detector

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Call Us @ 1-949-791-7904 For A Price Quote!
$250.00 (Fixed shipping cost)


The Lornet 24 Non-linear Junction Detector is used for detecting any electronic device in your office, home, or in a jail or prison.

Up until now, Non-linear Junction Detectors cost just under $20,000 and were out of reach for many small police departments or private investigators. The Lornet series of non linear junction detectors come in three models and prices, so you can find one to meet your needs and budget.


The Lornet Non-linear Junction Detector is perfect for jails, or prisons, as it will allow you to see if any inmates have smuggled in a cell phone to make illegal calls.

Download the Lornet Non-Linear Junction Detector History Specifications Brochure
Download the Lornet Non-Linear Junction Detector Catalog

The Lornet Non-linear Junction Detector is also a great bug detector, as it will find anything that has an electronic component, and it does not have to be turned on!

Check out this video of the Lornet 24 finding a bug!

A non-linear junction detector «LORNET» is used while conducting strategic and search work afield, in rooms, transport, and is designed to find special equipment containing semiconductor components. An automatic system of frequency selection is integrated into the device, and it can tune away from narrowband interference automatically (by a сriterion of minimum noise of the receiving channel of the 2nd harmonic).

Main characteristics:

  • Type of a probing signal: pulse, CW
  • Power of pulse/CW signal: 10/1 W
  • Sensitivity (by the 2nd and 3rd  harmonics): not worse -108 dBm
  • Probing signal frequency: 2400 - 2483 MHz
  • Dynamic range: more than 80 dB
  • Operation time from a built-in battery at maximum power of probing signal (pulse/CW): not less 3.0 / 1.0 h
  • Dimensions in transportation /operation position: 23х10х5.5/39х10х4 cm 
  • Full weight of the device in operation state: less than 700 g



  • It is a unique device worldwide by its frequency, weight and dimensions (it can be placed in a pocket) characteristics.
  • Easy-to-use, it is ideal as checking one
  • All operation modes of “LORNET” device are kept (automatic and manual modes of power change of the probing signal in a pulse mode, manual power change in CW mode)
  • Use of the latest technologies and materials, ergonomic
  • Electromagnetic effect to a person (while checking) is significantly lower then that of a cell phone
  • High detection potential (in some cases due to higher frequency of the probing signal  it is more effec-tive in comparison with detectors operation with more power, but in standard range)
  • Use of wireless earphones
  • It is possible to operate in hard-to-reach places and under conditions of limited space (antenna thickness does not exceed 18 mm)


This Russian product could take up to 2 weeks to receive Federal Service of Customs Export Control approval, plus normal Customs Clearance and shipping times.


  • Height: 23 cm
  • Width: 10 cm
  • Thickness: 4 cm
  • Weight: 700g
  • Power supply:Rechargeable battery
  • Frequency band: 2400 - 2483 MHz
  • Dynamic range: 80 Db



  • LORNET 24 device with Li-Ion battery
  • Wireless accessories (a receiver with head phones)
  • A charger for a battery and a receiver of wireless accessories
  • Power adaptor (220V) for a charger
  • Soft Carry Bag


About Non-Linear Junction Detectors...

The non-linear junction detectors LORNET are used for searching and locating electronic devices both in active and switch-off state.

Operating principle:

A Nonlinear junction locator known as a detector of semiconductor units or nonlinear transfer detector, and is designed for detecting electronic devices that contain semiconductor elements (diodes, transistors, circuits). Nonlinear junction locators are used when detecting electronic eavesdropping devices like radio frequency bugs, as well as remote control units of improvised explosive devices.

The operating principle of nonlinear locator represents high-frequency signal radiation of the investigated object, and visual and audio analysis of levels of second and third harmonic signal transmitted from the object. The Nonlinear junction locator is a mandatory sweeping device for any technical security service, and corresponding offices in law-enforcement agencies.

The Lornet detectors’ operation is based on the property of semiconductor components to generate a response at the 2d and 3d harmonics when radiated by an RF probing signal. Semiconductor components of artificial origin will have a higher level second harmonic while semiconductor components of natural origin (e.g. oxide films) will have a higher level third harmonic respectively. The detectors analyze the 2d and 3d harmonics response of the radiated objects, which enables a quick and reliable identification of electronic devices and natural oxide semiconductors.

The detectors automatically find the best receiving frequency channel that is free of noise and distortion, providing flawless operation even in a complicated electromagnetic environment. The frequency tuning algorithm implemented in the Lornet detectors automatically selects the correct RF probing signal frequency such that the noise level in 2d harmonic receiving channel is held minimal, while digital processing of a demodulated signal gives maximum sensitivity.


It is important to mention that the majority of nonlinear locators’ customers are in the technical security services of companies, and the corresponding offices in law-enforcement agencies.

The specialists who have worked with such devices see clearly the advantages of our products –  we are ready to demonstrate them, if needed.

There are two types of radiated signals:

  • Continuous wave carrier (CW)
  • Pulse modulated carrier with a duty cycle of 1% (pulse)

This enables to combine wide detection range and reliable identification of the devices found.

LORNET and LORNET-24 have both signals.

The non-linear junction detector “LORNET 24”

LORNET-24 simultaneously displays the 2d and 3d harmonics levels at its LED panel. Besides, the 2d and 3d harmonics levels can be estimated in turn aurally by the click repetition rate reproduced through a built-in loudspeaker or wireless earphones.

This device is very effective when it comes to identify a suspicious object (e.g. in the luggage), and compared to radio-metal locator, allows to detect even an unauthorized unpackaged audio-recorder in protected premises.

Detector of the returned RF signal envelope enables tapping radio microphones and using the acoustic feedback mode which facilitates search work.
LORNET-24 has both radiated signals: continuous wave carrier (CW) and pulse modulated carrier with a duty cycle of 1% (pulse).

Product files

Software Firmware Manual to
program RecManager
Series manual Supplement to
the model
      Series Manual. Version September, 2010  

The Lornet 24 Non Linear Junction Detector product normally ships from Russia UPS Overnight for $250.00 each.

Model:  Lornet 24 Non Linear Junction Detector

Warranty Information

EyeSpyPro guarantees this product for 90 days from date of purchase. If the manufacturer offers a longer warranty, we will assist you in obtaining repairs under warranty. Contact us for the manufacturers warranty for this product.

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