Transportable and Portable Means for Radio Monitoring


Transportable Automated Direction Finder

Direction finding techniques and equipment are protected by the RF patents.


  • Outdoor radio monitoring applications including:
    • Automatic direction finding
    • Panoramic spectrum analysis
    • Field strength evaluation
    • Radio signal parameter evaluation
    • Radio signal recording and technical analysis
    • Radio channel monitoring

Typical Configuration:

  • Foldable antenna system with integrated two-channel tuner, frequency range 20-3000 MHz
  • Two-channel A/D processing unit (or interface unit, when option of extension of simultaneous bandwidth up to 24 MHz is available)
  • Control and display unit with SMO-PPK, SMO-STA, SMO-ASPD Software Packages.
  • Power supply unit.

ARTIKUL-T Direction Finder with AC-PP4 Antenna System

ARTIKUL-T Direction Finder with AC-PP4 Antenna System


  • Extension of DF frequency range extension (1.5 – 3000 MHz)
  • Extension of simultaneous bandwidth up to 24 MHz
  • Power supply and communication unit
  • Navigation equipment integrated to the antenna system
  • Communication and data transmission equipment
  • Telescopic mast (up to 9 meters high)
  • SMO-PVP Cross Talk Detection Software Package
  • ARC-GIS Geoinformation Server.


  • The distance between antenna systems and operator's location can be up to 100 m
  • Operation at stops both standalone and as a part of Automated Spectrum Monitoring Systems (ARMADA, AREAL etc.) together with other technical means (when communication equipment is available)
  • Power supply from portable electro generator, external AC mains or vehicle on-board DC.

Direction Finder Provides:

  • Search and detection of emissions, their parameters evaluation, technical analysis and comparison with the database
  • Creation of databases, their extension and comparing of the recorded data with the references in the database
  • Field strength evaluation
  • Recording of radio signals
  • Panoramic spectrum analysis within the entire operating frequency range or within separate intervals under complicated electromagnetic conditions, detection of changes in ambient electromagnetic conditions
  • Recording radio environment within a specified frequency range. This procedure can function within a long period and is based on amplitude/frequency/bearing/time coordinates, unit location and the absolute time at the time of saving
  • Single- and multi-channel direction finding of radio signals with any modulation types and spectrum width
  • Demodulated signals playback
  • Accumulation of data for further analysis in the post-processing mode, simultaneous recording of demodulated signals and their service parameters (frequency, time, signal level, etc.)
  • Displaying bearing in electronic map.

Basic Technical Specifications of Direction Finder in Complete Configuration

Panoramic Spectrum Analysis
Operating frequency range 1.5 – 3000 MHz
Attenuators 0 - 30 dB with 2 dB increment
Single channel dynamical range 110 dB, min
Panoramic spectrum analysis rate Up to 20 GHz/s
Intermodulation free dynamic range (3rd and 2nd order) 75 dB, min
Maximum simultaneous bandwidth 24 MHz
Single-Channel and Multi-Channel Direction Finding
DF method Correlative interferometer
Operating azimuth range 0° - 360°
Operating frequency range 1.5 – 3000 MHz
Antenna system remote location range up to 100 m
Multi-channel direction finding rate up to 2 500 MHz/s
Single-channel direction finding rate more than 100 bearing/s
Maximum simultaneous DF bandwidth 24 MHz
Processed single signal minimum duration 10 ms
DF sensitivity, max
within 1.5-20 MHz range 15 V/m (typical 6 V/m)
within 20-3000 MHz range 6 V/m (typical 2 V/m)
Instrument accuracy (RMS), max.
within 1.5-20 MHz range 5
within 20-3000 MHz range 2.5
Types of recorded data radio signal sampling (I/Q), bearing, demodulated signals, spectrograms, time
Processed signal spectrum width Arbitrary
Radio Signal Recording, Technical Analysis and Parameter Measurement
Max. recording bandwidth  40 MHz

Typical curves of RMS and DF sensitivity vs. frequency are the same as curves given for ARTIKUL-S Fixed Direction Finder

Transportable and Portable Means for Radio Monitoring