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Handheld Non-Linear Junction Detector
6.390,00  EUR  ex VAT
7.987,50  EUR  inc VAT
Delivery in 15 days
14 day refund
24 month warranty

The Classic Non-linear junction detector (NLJD) from Lornet provides detection of semiconductor elements, and is meant for specialists working in the field of information security. It is used for search and detection of electronic devices, both in turned off or operational state. 

With a standard operating frequency in the range of 800-900 MHz, it can detect a wide range of devices such as: audio-recording gadgets, eavesdropping devices, microphone amplifiers, remote control devices, and the like. Due to the frequency band applied it doesn't detect SIM cards (compared to newer models fo Lornet NLJD). 

The operation of the NLJD is based upon the property of semiconductor components, which then generate a response in the second and third harmonics, when they are radiated by a RF probing signal. 

What that means is, that semiconductor components of artificial origin will have a higher level of second harmonic, while semiconductor components of natural origin such as oxide films, will therefore have a higher third level harmonic. 

The NLJD analyzes the second and third harmonics response of the object in question (it can be a wide range of objects, including vehicles), which in turn enables a swift and reliable identification of electronic devices and natural oxide semiconductors. 

Furthermore, the wireless earphones enable the user to listen to parasitic demodulation of signals of second and third harmonics.

Lornet Classic Main Features:

  • Two types of radiated signal: continuous wave carrier /and/ pulse modulated carrier with a duty cycle 1%
  • Carrier frequency step 0.2MHz within a tuning range of 890-891 MHz
  • Automatic frequency selection. Possibility of radiation at the carrier frequency with a minimum noise level in the 2d harmonic receiver path
  • Lightweight - weighs less than 1 kg
  • Transceiver antenna allows hard-to reach locations to be investigated
  • Wireless earphones for audio information 

Lornet Classic Specifications:

Maximum radiated power in the CW mode: ≤2W
Peak radiated power in the pulse mode: ≤10W.
Control of the radiated power level: Manual or automatic
Dynamic control range: 30dB down from the maximum output power value with 11 level gradations
Receiver's sensitivity: better than –150dBW given a 10dB signal to noise ratio
Receiver's tuning frequencies: equal to the transmitter double and triple
Receiving path dynamic range: ≥ 70dB.
Time of continuous operation with a lithium-Ion battery at the maximum radiated
power: ≥3 hours in the pulse mode and ≥1,5 hours in the CW mode
Unlimited operation time: from 220V with a power adapter connected
Equipped device weight: ≤1kg.
Operating conditions: ambient temperature 5-40C / pressure ≥450mm of mercury
Dimensions: 40*15*6.5 (in transport bag)/ 135*15*3.2 cm

Illustration from User Manual:

Package contents:

  • Transceiver antenna (with arm, control panel, built in battery and charger)
  • Power adapter
  • Wireless phones - earphones and receiving devices
  • User manual
  • Package


Feel free to study the user manual before use. It is useful to be familiar with the operation, search recommendations and safety measures for the Lornet Classic NLJD offered in the PDF below. 

>>Download detailed specifications (PDF)<<

Disclaimer: Items on the website are not be used for the purpose of illegal surveillance of unsuspecting subjects. The items are to be used only in compliance with all the local laws and regulations under the threat of penalty.

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