Name: Lornet Star 24S Non-Linear Junction Detector, 2.4GHz
Brand: Lornet
SKU: LORNET-STAR24S
Price: 21500.0 NZD
Availability: InStock

Lornet Star 24S Non-Linear Junction Detector, 2.4GHz

$21,500.00 NZD

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Key Specs

Detection Type

Non-linear junction, dual harmonic

Transmit Band

2406 to 2414 MHz

Output

10 W peak pulse, 200 mW CW

Sensitivity

At or below -110 dBm

Battery

2 x 12V 7.8Ah, 3 h pulse

Reach

54 to 86 cm telescopic rod

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Description

Lornet Star 24S is the 2.4GHz handheld in the Lornet range: a nonlinear junction detector that finds semiconductor junctions whether or not the device containing them is powered.

It transmits between 2406 and 2414MHz at 10W peak in pulse or 200mW in CW, and reads the second harmonic at 4812 to 4828MHz and the third at 7218 to 7242MHz. Receiver sensitivity is at or below -110 dBm across 24 dB of dynamic range. Automatic channel search steps in 200kHz, 2MHz or 13MHz across five channels, with anti-jamming filtering. The detector head is 0.8kg on a removable 54 to 86cm telescopic rod, and two 12V 7.8Ah batteries run it for three hours in pulse.

Features

Dual-Harmonic Detection: Reads second and third harmonics together to confirm a semiconductor junction, including devices that are powered down.
Pulse And CW Modes: Pulse at 10 W peak for wide scanning, CW at 200 mW for precise localisation with audio feedback.
Smart Frequency Control: Automatic channel search across five channels with anti-jamming filtering to hold a clean working window in busy RF areas.
Handheld With Reach: Removable telescopic rod extends 54 to 86 cm for wall cavities, ceilings and under-desk spaces.
Visual And Audio Cues: On-unit indication with headphone monitoring for confirmation during a sweep.
Manual Power And Sensitivity: Output power and receive sensitivity are set on the handle, without menus.
Two Batteries Supplied: Two 12 V 7.8 Ah cells and a fast-charge container, so one charges while the other works.

Applications

Real-World Scenarios

A Room Inspection In A Working Building

Offices, boardrooms and executive suites are full of legitimate electronics, so the question is never whether a junction exists but which junction is not accounted for.

Working with the rod extended lets an operator cover furniture, skirting, wall fixtures and ceiling voids at a consistent standoff, which is what makes readings comparable from one surface to the next.

A Server Room Or Laboratory

Dense installed equipment is the hardest environment for an NLJD and also the one where an implant hides best.

Five automatic channels with 200kHz to 13MHz stepping, plus anti-jamming filtering, give the operator somewhere quiet to work. CW mode with headphones is the close-in tool once pulse mode has narrowed the area.

A Vehicle Or A Field Deployment

0.8kg for the detector head and 0.2kg for the rod is a difference you feel across a full day of inspections.

Two 12V batteries and the fast-charge container mean one is charging while the other is in use, which is what keeps a multi-site day moving.

How it Works

Fit the antenna module and the telescopic rod, then run automatic channel search so the transmitter settles on the quietest of the five channels for the site.
Sweep in pulse mode at 10W peak, watching the second and third harmonic returns together rather than a single level.
Switch to CW at 200mW to localise, using the headphones for audio feedback as you close in. The ratio between the two harmonics is what separates a semiconductor from a corroded metal junction.

Specifications

Transmitter Bandwidth: 2406 to 2414 MHz
Radiated Signals:Pulse modulation (44 % duty cycle) Continuous-wave (CW)
Peak/Average Power: 10 W peak / 230 mW avg (pulse), 200 mW (CW)
Harmonic Frequencies:2nd: 4812 to 4828 MHz 3rd: 7218 to 7242 MHz
Receiver Sensitivity: ≤ -110 dBm; dynamic range 24 dB
Channel Selection: 5 automatic frequency channels
Power Source: Two 12 V Li-ion batteries (7.8 Ah)
Runtime: ≥ 3 h (pulse) / ≥ 1.5 h (CW)
Dimensions: Detector head 39 × 10 × 6 cm; rod 54 to 86 × 4 × 4 cm
Weight: ~0.8 kg (detector head) + ~0.2 kg (rod)
Operating Temp: +5 °C to +40 °C
Module Thickness: ≤ 18 mm (antenna modules)

Frequently Asked Questions

What is the difference between pulse and CW here?

Pulse gives 10W peak at 44 percent duty for faster, wider scanning. CW holds a steady 200mW carrier and is the mode for pinpointing a suspect spot with audio and visual feedback.

How does automatic channel search help?

It scans the five available channels, in 200kHz, 2MHz or 13MHz steps, and settles on a quiet one. Anti-jamming filtering then suppresses centre-frequency noise so the reading stays stable.

How long will it run?

At least three hours in pulse or about 1.5 hours in CW. It ships with two 12V 7.8Ah batteries and a fast-charge container, so one charges while the other works.

Can I reach behind and above things?

The telescopic rod extends from 54 to 86cm and is removable. The antenna modules are 18mm or less thick, which is what lets them get into shallow gaps.

How heavy is it in the hand?

About 0.8kg for the detector head plus 0.2kg for the rod. Operating range is plus 5 to plus 40 degrees Celsius.

Who is this equipment for?

Technical surveillance countermeasures practitioners, corporate security teams and facilities that run their own inspection programmes. A non-linear junction detector is an operator-dependent instrument: results depend on technique, on knowing what a false response from a corroded joint looks like, and on interpreting harmonic ratios. It is not a plug-in-and-scan device.

Does it replace an RF detector?

No, they answer different questions. An RF detector finds what is transmitting now. An NLJD finds semiconductor junctions whether or not anything is powered, which is how a dormant or switched-off device is found. A full sweep uses both.