Full-size NLJD
Nonlinear Junction Detector
- ≥ 10 m
- −140 dBm
- ≥ 9 h battery
The longest-range unit in the family. Detects through a 550 mm brick wall, with display, audio and vibration alerts and a replaceable lithium battery.
Mastoor Defense Technologies · Security and EOD
Anti-terrorism and EOD equipment
Equipment for finding hidden electronics, screening people and packages, and controlling radio signals during search, disposal and protection tasks.
12Products in the range
10 m+Longest NLJD detection distance
6.5 GHzJamming coverage, from 8 MHz up
Grade CHighest grade under GA1236-2015
Nonlinear junction detection
Finding hidden electronics
A nonlinear junction detector (NLJD) finds electronic devices hidden in walls, floors, ceilings, furniture or packages, whether or not they are switched on. The detectors below meet Grade C, the highest grade, of the GA1236-2015 standard.
Portable NLJD
Portable Nonlinear Junction Detector
- ≥ 6 m
- 0.5 kg
- Folds
A light, folding detector for routine sweeps. Detects through a 370 mm brick wall. A telescopic-rod version reaches ceilings, lamps and air vents.
Intelligent NLJD
Intelligent Nonlinear Junction Detector
- ≥ 6 m
- Type discrimination
- 4 h battery
Shows the type of object detected on screen, which cuts the time spent checking false alarms. Suited to electronic explosive investigation and contraband searches.
NLJD + wireless detection
Enhanced Nonlinear Junction Detector
- ≥ 6 m
- GSM to 5G, WiFi, BT
- Direction finding
Combines junction detection with a wireless signal detector that indicates the direction and strength of transmitting devices, so one tool covers both live and dormant devices.
High-sensitivity NLJD
AT-823
- > 6 m
- 370 mm wall
- Anti-interference
Locates very small concealed devices such as eavesdropping and covert recording equipment, even when powered off, with stable performance in electrically noisy environments.
Electronically scanned NLJD
AT-805
- Phased array
- Area scanning
- Visual positioning
Uses phased-array harmonic radar with a camera to scan an area and show where concealed devices are on screen, with multi-target detection and one-touch screenshots for evidence.
Search and screening
Timed devices and controlled entry
EOD search
Electronic Listening Device
- ≥ 3.5 m
- IP65
- ≥ 10 h battery
An RF listening device that detects mechanical and electronic timing mechanisms through packaging, to support explosive search and disposal. It can also be used to find eavesdropping devices.
Entry screening
Walk-through Cell Phone Detector
- ≥ 99% detection
- 100 sensitivity levels
- 25-inch screen
A walk-through gate that tells mobile phones and contraband apart from everyday metal items. For entrances to confidential facilities, research centres, factories and examination halls.
Frequency and signal jamming
Controlling the radio environment
Software-defined radio (SDR) jammers, so new bands and protocols are added by software update.
Portable
Portable SDR Frequency Jammer
- 8 MHz–6.5 GHz
- 360° coverage
- IP54
A one-person unit with an integrated omnidirectional antenna that blocks remote-control links, radios and mobile networks around a task site. Each band can be switched independently. Mains or built-in battery.
Vehicle-mounted
Vehicle-mounted SDR Frequency Jammer
- 20 MHz–6 GHz
- Roof-box form
- No vehicle modification
Housed in a standard roof box with no visible antennas and powered from the vehicle battery. For convoy protection and security at major events.
Counter-FPV
AT-619 Portable Counter-FPV Shield
- ≥ 1 km*
- 4.5 to 5.6 kg
- IP54
A directional, shield-shaped jammer that blocks drone video, control and navigation signals, in FPV-only or FPV plus conventional drone modes. *Distance varies with the environment and the drone.
Where it is used
Typical tasks
Counter-surveillance
Secure rooms and meetings
Sweeping offices, meeting venues and confidential facilities for recording and listening devices.
Corrections
Contraband searches
Finding prohibited phones and electronics in correctional and controlled facilities.
EOD
Search and disposal
Detecting electronic and timed devices, and blocking remote triggers during disposal.
Protection
Convoys and events
Vehicle-mounted jamming for VIP movement and security at major events.
Access control
Controlled entry
Screening for phones at entrances to restricted sites and examination halls.
Low-altitude defence
Counter-FPV
Portable directional jamming for squads, bases and event security.
Supply
Who we supply
This equipment is intended for government, defence, law-enforcement and other authorised users. Frequency jammers in particular are supplied subject to end-user verification and the regulations that apply to their use.
Specifications on this page are those published in the product manual. Detection and jamming distances are test values and vary with the environment.
More from MDT
Manual and related systems
PDF · 7.7 MB
Anti-terrorism and EOD product manual
Full technical specifications for every product on this page.
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Kinetic drone defence
Alongside electronic countermeasures, MDT's engineering division designs passive physical protection for fixed sites against FPV drones and loitering munitions. Details are shared with qualified clients on request.
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