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:

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

frequencies

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:

Notes