Professional Non-Linear Junction Detector

Professional Non-Linear Junction Detector

Category: Uncategorized

$16000.00 each

Product Number:  737

Allows for listening of low frequency devices such as tape recorders, radio, microphone amplifiers, and is a powerful tool in the identification of the type.

  • Description
  • Technical Specifications


The generation of microwave signals in the Non Linear Junction Detector, when in contact with transistors, diodes or chips re-emits certain higher frequencies, the re-emitted signal is received on the antenna and processed showing the 2nd and 3rd harmonics on LED indicators & earphones. This detectector detects a high amount of high level threats, such as listening devices.

20K MODE Allows for listening of low frequency devices such as tape recorders, radio, microphone amplifiers, and is a powerful tool in the identification of the type of non linear device (bug).


The resolution of each LED indicator is 3dB and the received signal can also be heard with the accompanying earphones.
FREQUENCY TUNING Selects the best frequencies (not interfering with GSM range) allowing the unit to work in a concentrated environment.


The Non Linear Junction Detector's emitting power can be adjusted as well as the receivers sensitivity.


The Non-Linear Junction Detector operates in pulse mode with a power of emitter up-to 4 watts per pulse, this allows for higher (-120 dBm / -150 dB/W) sensitivity of the receivers. This is achieved by optimising the parameters of the signal in conjunction with a superior antenna system.


Ergonomic one piece construction and light (1.3 kg including battery) with extendable/retractable poll inside the handle, as well the Non-Linear Junction Detector's innovative screw-in battery extends the handle further.


Operation speed, product safety, ergonomics, battery and continuous usage time (not less than 5 hours), the Non-Linear Junction Detector exceeds all currently available Non Linear Junction Detectors.

Technical Specifications:

Frequency band: 900.2 MHz ± 1 MHz
Frequency step: 200 KHz, totally 21 channels (±10 steps)
Modulation: Pulse
Maximum output power per pulse: 25W ± 1 dB
Minimum output power per pulse: 1.6 dB
Frequency bands: 1800.4 MHz and 2700.6 ± 1 MHz (x2,x3)
Sensitivity of each receiver: -120 dBm at S/N 3dB (-150 dB/W)
Dynamic range: at least 30 dB
Manual receiver gain: four stages of (±1 dB) in each stage
20k Mode - transmitter emits signals modulated by the amplitude of the sequence of radio pulses: demodulation width signal spectrum is 500-2000 Hz.
Number of antennas: 3 (three), combined in a single unit
Beam width of Tx/Rx antennas at - 3dB level: 90 degrees
Polarization of Tx/Rx antennas: circular polarization with an elliptical ratio up to 1.5
Tx/Rx antennas: coaxial pattern, maximum deviations of the main lobe, not exceeding 50

The Spy Store – For All Your Spy Equipment Needs Including; Cameras, Recorders, Radios, Night Vision, And Other Security Products.

Spy Equipment We Sell