ORION non-linear junction detector

June 2010 Products

A non-linear junction detector is important for technical surveillance countermeasures or TSCM work. Bugging devices are often thought to be transmitters, but hardwired devices or devices that can be turned on and off remotely that do not emit an RF signal could be overlooked. A non-linear junction detector (NLJD) is made to find these types of hidden devices. A NLJD detects hidden electronic devices regardless of whether the device is transmitting, hard wired or even turned on at all.

It transmits an RF signal and then listens for harmonic returns to detect the presence of electronics. When the transmitting signal encounters semi-conductor junctions (diodes, transistors, etc), a signal is returned at harmonic frequency levels according to the characteristics of the junction, providing an indication of the presence of electronics.

The ORION provides excellent discrimination between corrosives and electronics (2nd and 3rd harmonics) and utilises automatic power control which reduces the transmit power to a level where a good distinction between the different levels is visible, making it easy to discriminate between true electronic junctions and false corrosive junctions.




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