Katran non-linear junction detector (discontinued)
Katran non linear junction detector


 		 Note: this product is discontinued, we suggest to contact us for alternative product.

The Katran is designed to detect various kinds of electronic devices containing semiconductor elements , such as eavesdropping devices, microphone amplifiers, audio-recording devices, remote control devices etc., both in switched-on and switched-off modes.
 
Katran locates potential eavesdropping devices by flooding a suspect area or target with a spectrally pure microwave RF signal. The relative strength of second and third harmonic returned being reflected by non-linear junctions varies depending on the material from which the junction is made. Metallic junctions return a greater relative 3rd harmonic signal than semiconductors junctions. And semiconductors junctions return a greater relative 2nd harmonic signal than metal oxides. By comparing the relative strengths of the two harmonics Katran gives the operator a clearer indication of the source of any reflected signal.
Features: 
  • the frequency selection (within the effective range with the tuning step 0.5 MHz) is done automatically in accordance with the minimal noise at the 2nd harmonic;
  • due to using of different formats of modulation of fundamental signal there is a possibility not only to detect radio transmitting devices, but to define their types through listening to them;
  • manual adjustment of radiation power;
  • minimized back and side directional lobes;
  • built-in loudspeaker;
  • possibility to connect headphones;
  • circularly polarized antenna reduces search time and improves reliability;
  • power supply from both rechargeable battery and 220 V AC mains.
Technical characteristics:
radiation mode
continuous
fundamental frequency
890 - 895 MHz
automatic tuning step size
0.5 MHz
analyzed harmonics
2nd and 3-rd
maximum radiation power
2 W
power gradation
0.08, 0.16, 0.6 and 2 W
receiver sensitivity
not worse than -130 dBm
dynamic range of receiving section
no less than 75 dB
indication
audible and visual (bar indicator)
power supply
12 V (Li-Ion rechargeable battery) or 220 VAC
time of non-stop operation
2.5 hours
weight (including weight of the battery)
3.1 kg
operating temperature
5 - 40 ° C