The Non-Linear Junction Detector (NLJD) by NIRIKHON locates powered-off, unpowered, and shielded electronics — including hidden bugs, trackers, and nano-SIM cards — through 2nd and 3rd harmonic analysis at sensitivity better than -120 dBm. Silicon vs metal discrimination reduces false alarms during sweeps. Weighing ≤750g with an aircraft-grade aluminum body, it's built for extended field deployment. Backed by a 1-year warranty.
Machined from aircraft-grade aluminum, this enclosure houses the unit's transceiver electronics while keeping total weight at ≤750g. This construction balances rugged field durability with the lightweight ergonomics required for extended handheld sweep operations.
This transmitter emits a controlled RF signal across the 2.400–2.425 GHz ISM band, with output adjustable from 0.5W to 2.0W. This transmitter is what excites semiconductor junctions in target electronics, generating the harmonic response the receiver depends on for detection.
This receiver captures both 2nd (~4.8 GHz) and 3rd (~7.2 GHz) harmonic signals reflected back from semiconductor junctions. Comparing both harmonic bands is what allows the system to reliably distinguish a genuine electronic junction from environmental noise.
This receiver stage detects signal levels better than -120 dBm, capturing extremely weak harmonic responses from concealed or powered-off electronics that lower-sensitivity equipment would miss entirely.
The onboard DSP processes received harmonic signals to distinguish genuine semiconductor (silicon) junctions from metal-based false positives. This discrimination capability is what separates a true electronic threat detection from a wasted sweep on ordinary metal objects.
This display presents real-time sweep results directly on the unit, giving operators immediate visual feedback during active detection without requiring a separate monitoring device.
The Li-Po battery delivers 3 to 4.5 hours of continuous operation per charge, supporting extended sweep sessions across large facilities or multi-room technical inspections.
Charges via a standard USB-C connection, providing convenient, widely compatible power replenishment between field deployments without requiring proprietary charging hardware.
The built-in loudspeaker provides audible feedback during Tone and Demodulation Mode analysis, allowing operators to confirm detection results through sound alongside the visual display.
This jack supports connection to external headphones, enabling discreet audio monitoring during sensitive sweep operations where audible feedback from the built-in speaker would be inappropriate.
The unit is transported and stored in a rugged, military-grade hard case, protecting the transceiver electronics and accessories during transit between field deployment sites.
Yes. The system uses non-linear junction detection, which identifies semiconductor junctions based on their physical properties rather than any active RF emission — meaning detection capability is not dependent on the device being powered on. This allows the unit to locate hidden voice recorders, nano-SIM cards, and other concealed electronics up to 20 cm away, regardless of their power state.
The system's DSP-based processing compares 2nd (~4.8 GHz) and 3rd (~7.2 GHz) harmonic responses to distinguish genuine semiconductor (silicon) junctions from metal-based sources such as corroded metal joints or fasteners. This dual-harmonic comparison significantly reduces false-positive alerts during sweeps, allowing technical counter-surveillance teams to focus efforts on genuine electronic threats.
The system detects nano-SIM cards and covert transmitters at distances of up to 20 cm through building materials. Procurement committees evaluating specific penetration performance across individual material types (such as wood, drywall, or concrete) should note that this 20 cm figure is the confirmed general detection range as specified for the unit.
The unit's Li-Po battery delivers 3 to 4.5 hours of continuous operation per charge. This runtime is designed to support extended sweep sessions across single or multi-room facility inspections, with USB-C charging available for convenient recharging between operational sessions.
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