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Non Linear Junction Detector

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Non Linear Junction Detector represents a unique equipment capable to find out practically all concealed eavesdropping devices though the analysis of harmonic emissions caused by an illuminating signal when it is reflected off of a target.

  • Power supply - Accumulator (7,2 V)
  • Continuous operation time - Not less than 4 h.
  • The transmitter operates in a pulse mode in a frequency range 915 MHz
  • Spacing of retuning 200 KHz>
  • Maximum impulse output power 16 V±1 Db
  • Minimal impulse output power 1,6 Db
  • Receivers adjustment frequencies are equal to double or triple transmitter frequency accordingly.
  • Both receivers sensitivity at signal/noise ratio not less than 6 Db -136 Db/W
  • Receiver dynamic range not less than 30 Db
  • Manual receivers amplification control in 4 steps; each step equals to (10±1) Db
  • In a "20K" mode of operation both receivers emits signals modulating radio-frequencypulse pattern.
  • Demodulated signal bandwidth 500-2000 Hz.
  • There are three aerials combined in one unit.
  • Beam Width Angle (at 3 Db level on transmitting and receiving aerials) not more than 90.
  • All aerials are circular polarized.


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