Fixed Means


Fixed Compact Measuring System


  • The system is intended for search, detection, identification, recording, demodulation, spectrum and technical analysis of radio signals within HF, VHF, UHF and SHF ranges, measurement of field strength and signals parameters, as well as for localization of radio emission sources when being operated as a part of a distributed system.


Typical Configuration:

  • ARGAMAK-RS Measuring Radio Receiver (Protected Design)
  • EFSU External Field Sensor Unit (omni-directional measuring antenna)
  • Navigation and timing equipment GLONASS/GPS for location finding and synchronization of the systems when joint operating.
  • Power supply unit with back-up battery and controller
  • Mounting kit to mount the system on a rod or to a wall
  • Control and display unit with SMO-PAI, SMO-STA, SMO-ASPD Software Packages.


  • Alarm censors
  • Built-in 2G/3G/4G router
  • Shockproof case for storage and transportation
  • SMO-BS Software Packages for Wireless Data Communication System Analysis: BS 3GPP (GSM, UMTS, LTE), BS CDMA (IS-95, cdma2000, EV-DO), BS TETRA, BS DECT, BS TRUNK (DMR, APCO P25)
  • SMO-CT Software Package for Digital TV Signal Analysis
  • Software Development Kit.

Structural Diagram of ARGAMAK-RSS


  • Option of operation as a part of automated spectrum monitoring systems (ARMADA, AREAL etc.)
  • Installation to a wall, mast or tripod
  • Protected design (IP67) providing for outdoor operation in complicated weather conditions
  • To increase measuring accuracy in complicated electromagnetic environment, additional built-in analogue path with 500 kHz bandwidth can be used
  • Localization of radio emission sources localization based on TDOA method (when being operated as a part of distributed system)

Results of radio emission source localization based on TDOA method

System Provides:

  • Panoramic spectrum analysis within entire operating frequency range or within separate intervals
  • Finding and identification of radio emission sources
  • Monitoring of appropriate use of radio frequency spectrum
  • Measuring of signal parameters, determination of modulation type
  • Field strength measurement
  • Demodulation of continuous AM, NFM, WFM, USB, LSB, CW signals
  • Continuous IQ recording within the band up to 22 MHz
  • On-line radiomonitoring mode (real time operation)
  • Automated (scheduled) radiomonitoring mode with control web-interface (flexible task scheduler)
  • Saving and loading of tasks and their templates
  • Collecting data on frequency range loading
  • Search for radio emission sources based on reference spectrum data (mask) or combination of preset conditions
  • Flexible editing of reference spectrum data (group masks)
  • Creating radio monitoring and technical events (changing in radio monitoring equipment or communication channel status)
  • Saving of the event information to database, option to notify about events by e-mail or SMS
  • Display of frequency assignments with detailed information on radio emission sources from database on the spectrum
  • Monitoring of parameters of radio emission sources based on spectrum mask
  • Demodulation, playback and recording of radio signals
  • Saving of radio monitoring results to database (including spectrogram and time sample, for each measurement its date, time and coordinates are recorded) automatically or on operator's command
  • Option of printing or export to storage of radio monitoring results
  • Analysis of operation results in postprocessing mode
  • Creating reports in MS Word, MS Excel, PDF, HTML, XML, and OpenOffice formats, which presents the results in text, table or graphic forms
  • Editing report templates
  • Multiuser operation mode, including differentiation of user rights by access and data editing features
  • Display of the structure and status of system nodes, frequency assignments, relocation of mobile nodes, and operation results on an electronic map
  • Open control protocol, option of integration with external information systems
  • Localization of radio emission sources with amplitude method, as well as TDOA and combined methods (when being operated as a part of distributed system).

Basic Technical Specifications of Systems in Complete Configuration

Operating frequency range 0.009 – 18000 MHz
Input signal maximum level +23 dBm
Input radio signal level measurement limits 0 - 120 dBV
Attenuation range From 0 to 40 with step 1 dB
Error of sine signal level measurement 3 dB, max.
Relative error of non-modulated signal and AM-signal frequency measurement, max.:
When operated with buit-in reference generator 5×10-8
When GNSS-based synchronization 1x10-10
Bandwidth measurement error using X dB method max. 5%
Amplitude modulation factor measurement error max. 7%
Frequency deviation measurement error for signals with frequency modulation max. 5%
Noise figure, max:
within 20 - 3000 MHz range 12 dB
within 3000-8000 MHz range 16 dB
Phase noise of heterodyne when mistuning at 10 kHz, max.
within 20 - 3000 MHz range minus 100 dBs/Hz
within 3000-8000 MHz range minus 85 dBs/Hz
Single-signal dynamic range (with 12.5 kHz discreteness, attenuation off), min.
within 0.009 - 3000 MHz range 85 dB
within 3000-8000 MHz range 80 dB
IP2, min.
within 20 - 3000 MHz range 40 dBm
within 3000-8000 MHz range 30 dBm
IP3, min,
within 20 - 3000 MHz range 0 dBm
within 3000-8000 MHz range 0 dBm
Spurious rejection, min.:
within 0.009 - 3000 MHz range 80 dB
within 3000-8000 MHz range 70 dB
Panoramic spectrum analysis rate up to 10 GHz/s
Maximum simultaneous bandwidth 22 MHz
Speculative recording mode (cycle buffer recording of signal until trigger fires) yes
Control and data transfer interface Ethernet 1000Base-T
Operating temperature range -40C +55C
Degree of protection against external effects IP67
Power consumption up to 35 W
Dimensions of radio receiving unit, max. 300 x 300 x 150 mm
Weight, max. 7 kg

Fixed Means