Transportable and Portable Means for Radio Monitoring


Portable Automatic Direction Finder

Direction finding techniques and equipment are protected by the RF patents

First Grade medal awarded by the XII Moscow International Forum & Exhibition «Security and Safety Technologies» (2007)

«Security & Quality» medal awarded by «National Security» International Contest (2006)


  • The direction finder is purposed for 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

ARTIKUL-P Direction Finder disarranged for transportation

Typical Configuration:

  • Portable foldable antenna system with a built-in two-channel receiver
  • Two-channel A/D processing unit
  • Telescopic mast
  • Antenna system and mast transportation tube
  • Backpacks for transportation
  • Control and display unit with SMO-PPK, SMO-STA, SMO-ASPD Software Packages.

ARTIKUL-P Direction Finder deployed for operation


  • The distance between antenna systems and operator's location can be up to 80 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).

ARTIKUL-P with communication equipment when operated as a part of DF network

Direction Finder Provides:

  • Single- and multi-channel direction finding of radio signals with any modulation types and spectrum width
  • Search and detection of radio emission, measurement of their parameters
  • 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, direction finder location and the absolute time at the time of saving
  • 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.)
  • Demodulated signals playback
  • Creation of databases, their extension and comparing of the recorded data with the references in the database
  • Displaying the emitter bearing and localization of detected emitter on the electronic map (when ARC-GIS is included)

Antenna system of the direction finder comprises two arrays: basic and additional ones. The basic array consists of nine flat antenna elements mounted on foldable cross-arms. The additional array extends frequency range up to 3 GHz. It comprises seven antenna elements installed inside protective radome. Antenna system contains integrated satellite navigation module, which provides for true north calibration of the antenna system and its localization.

Basic Specifications

Panoramic spectrum analysis and detection
Operating frequency range 25 – 3000 MHz
Intermodulation free dynamic range (3rd and 2nd order) 75 dB, min
Panoramic spectrum analysis rate up to 3 500 MHz/s
Automated single-channel and multi-channel direction finding
DF method Correlative interferometer
Operating azimuth range 0° - 360°
Operating frequency range 25 – 3000 MHz
Processed emitter signal spectrum width Arbitrary
DF field sensitivity 6 V/m (typical 2 V/m)
Instrument accuracy (RMS)
Multi-channel direction finding rate up to 150 MHz/s
Single-channel direction finding rate 30 bearing/s
Operating Parameters
Total weight of equipment and accessories max. 65 kg
Required number of operators for transportation up to 3
Weight of the antenna system (with cased mast) max. 24 kg
Weight of the backpack with spare parts and accessories max. 23 kg
Weight of power generator with reeled 20 m cable max. 18 kg
Time of deployment by two operators max. 15 minutes
Deployment site preparation Not required

Typical curves of RMS and DF sensitivity vs. frequency are given in Table 4 on page Technical Means for Radio Monitoring.

Transportable and Portable Means for Radio Monitoring