The frequency of the probing signal in the range: 2400MHz +/-
The maximum power of the probing signal (max. // average):
Pulse mode: 10W // 230mW
Pulse mode with small duty cycle (CW): 200mW
Receiver sensitivity, not worse than: -110dBm (-140BmW)
The adjustment range of the probing signal power: 20Bm
The dynamic range of the receive path: 24Bm
Battery life at maximum power in a pulsed (continuous)
mode: 3 h (1.5 h)
The operating temperature range: from +5 to +40º С
Device dimension: 39х10х6 (22х11х7)cm
The full weight of the item in active status: 0.7 kg
The full weight of the item in a bag: 1.7 kg
Accessories:
R-T unit with a control knob
2 removable (LI-ION) rechargeable batteries (3.6V),
Battery charging container,
Battery charging adaptor (220V)
Wireless headset and receiver
AC adapter for the receiving device (220V)
Transportation bag
Manual, Certificate
Details
Datasheet
Manual
Video
An NLJD operation principle is based on illuminating a certain object
under search with high power RF energy (either CW or pulsed) and on
receiving the re-emitted object response at the multiples of the probing
signal frequency (its second and third harmonics). The NLJD capability
of detecting hidden electronics comes from the non-linear properties of
semiconductors. Any electronic device will contain some printed circuit
boards (PCB's) with conductors (virtual antennas) to which various
semiconductor elements (diodes, transistors, microchips) are connected.
For a high frequency probing signal all these elements can be considered
as non-linear reflectors. This high frequency probing signal will
induce in these conductors an alternating emf being converted by
elements with a non-linear volt-ampere characteristic into RF signals on
multiples (harmonics) of the probing frequency. These harmonics will be
eventually re-emitted into space and detected by the NLJD's receivers
tuned to these very frequencies. Detecting the 2-d and 3-rd harmonics of
the probing signal by NLJD's receivers will mean that a hidden
radioelectronic device is present in the illuminated area regardless of
whether this device is powered on or switched off. It is conventionally
assumed that the detected non-linear object is artificial in origin if
the second harmonic's level exceeds that of the third one. If opposite
is the case then the detected object is considered a natural non-linear
junction of MOM-type (metal-oxide-metal). However, the NLJD application
practice tells us that the mentioned criterion of the object origin
identification may not always work well (e.g. a rusty metal element may
exhibit a higher second harmonic level). In such a case additional
identification methods may prove useful. This is where harmonics
spectrum analysis will come really handy. In an ambiguous situation one
may want to apply some physical impact on the object under search (e.g.
knocking at it) while observing the second and third harmonics spectrum
(or listening to the demodulated harmonics response in the headphones).
The natural objects under a physical impact will show spectrum widening
(regrowth) whereas the harmonics spectrum of artificial (electronic)
object will remain largely unchanged. During demodulation the spectrum
regrowth will manifest itself as a rustling noise in the headphones.