Transportable and Portable Means for Radio Monitoring


Two-Channel Panoramic Radio Receiver

Professional System for Revealing of Unauthorized Radio Emissions

Processing techniques and equipment are protected by the RF patents.


  • Variety of functions related with search for radio emissions inside facilities and outdoor radio monitoring, including:
    • detection of data leakage technical channels indoors
    • Wire network monitoring
    • Automatic direction finding and outdoor localization of active radio signal sources
    • External radio monitoring of extended facilities
    • Radio signal recording and technical analysis
    • Radio signal spectrum analysis and parameters measurement.
    • Search of intermodulation interferences
    • Analysis of parameters of wireless communication and data transmission network base stations (GSM, IS-95, cdma2000, EV-DO, TETRA, UMTS, LTE, Wi-Fi, WiMAX, DECT, DMR, APCO P25), as well as DVB-T/T2/H.

ARC-D11 Central Unit

ARC-D11 Central Unit

Typical Configuration:

  • Central unit of ARC-D11 with integrated two-channel digital radio receiver, antenna switch, AC and vehicle on-board power unit with charger and battery
  • Set of ARC-A2M Wideband Antenna with operating frequency range from 25 to 3000 MHz
  • Set of ARC-A14K Wideband Antenna with operating frequency range from 3 to 8 GHz
  • Network probes: active (ARC-ASP2) and passive (ARC-PSP2)
  • ARC-MA2 HF Magnetic Receive Antenna
  • ARC-A12 Wideband Antenna
  • Control and display unit with SMO-PA, SMO-STA, SMO-ASPD, SMO-DX Software Packages
  • Case for storage and transportation of the accessories


  • ARC-A7A-3 Broadband Antenna for Installation on Vehicle
  • ARC-KNV4M Remote-Controlled Frequency Down-Converter (3-18 GHz)
  • Frequency down-converter (8 – 40 GHz)
  • ARC-UP3D Remote Controlled Three-Coordinates Antenna Rotator
  • ARC-ABS External Wi-Fi Analyzer
  • DF antenna systems: AS-HP-HF, AS-HP1, AS-HP2, AS-HP5
  • ARC-IG Video facilities for visualization of radio emission sources in spatially distributed locations
  • Vehicle luggage box with fasteners to mount DF antenna systems
  • Mast for mounting of DF antenna systems
  • ARC-A3A Directional Antenna Set and handle provided for amplitude direction finding
  • High-stable external reference generator
  • Communication and data transmission equipment
  • 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 TRUNK (DMR, APCO P25), BS Wi-Fi, BS WiMAX
  • SMO-CT Software Package for DVB-T/T2/H Signal Analysis
  • ARC-GIS Geoinformation Server.

ARC-D11 Operated in DF Mode with AS-HP1 Mounted on Vehicle Roof and Mast

ARC-D11 Operated in DF Mode with AS-HP1 Mounted on Vehicle Roof and Mast


Two physical channels of coherent receipt and digital processing

  • Frequency range of each channel is 9 kHz – 8 GHz

Broad operating frequency range:

  • Frequency range of one channel can be extended up to 40 GHz (optionally)

High efficiency:

  • Simultaneous bandwidth of each channel: up to 24 MHz
  • Panoramic spectrum analysis rate (with 6.25 kHz spectrum discreteness): up to 20 GHz/s
  • Multi-channel direction finding rate: up to 2 500 MHz/s
  • FH signal detection: up to 1000 hps
  • Detection of the pulse radio signal with the length: from 1 s

High interference immunity:

  • Intermodulation-free dynamic range (3rd and 2nd order): 75 dB
  • Maximum allowable input voltage: 23 dBm
  • Out-of-band rejection: 70 dB
  • Image rejection: 70 dB
  • Additional receiving path: 0.5 MHz bandwidth

Multifunctional performance based on Software Defined Radio design approach:

Indoor radio monitoring (from 9 kHz to 40 GHz):

  • Detection of "new" radio emissions with arbitrary modulation kinds, including UWB signals and signals with FH
  • Identification of unauthorized radio emitters
  • Localization of radio emission source in the course of indoor and outdoor radio monitoring in objects
  • Wire network monitoring: 50 Hz – 30 MHz

Outdoor radio monitoring (from 9 kHz to 40 GHz):

  • Automatic direction finding: 1.5 - 8 000 MHz
  • Automated direction finding: 8 - 40 GHz
  • Detection of radio emissions and localization of their sources outdoor
    • Analogue VHF/UHF communication equipment
    • Transmitters of digital standards
    • Transmitters of analogue and digital video surveillance system

Common functions:

  • Continuous radio signal recording within the band up to 40 MHz
  • Multi-channel (up to 64 channels) recording of radio signals with 12.5/25 kHz bandwidth within each of two independed receiving channels
  • Technical analysis of radio signals in postprocessing mode
  • Search of intermodulation interferences
  • Powering from AC mains (90 – 250 V) or vehicle DC 10 - 15 V
  • Option of remote control

The Unit provides:

  • Outdoor and indoor radio monitoring from 9 kHz to 18 GHz (when ARC-KNV4 Frequency Down-Converter is available)
  • External radio monitoring for extended objects within frequency range from 25 MHz to 8 GHz (when ARC-IG and DF antenna systems are available)
  • Automatic single- and multi-channel direction finding of radio signals with arbitrary spectrum width within frequency range from 1.5 to 8000 MHz (when optional DF antenna systems are included)
  • Evaluation of radio emission sources location based on signal levels evaluated in different points of route or based on bearings (when optional DF antenna systems are included)
  • Real-time two-channel synchronous radio monitoring
  • Two-channel synchronous or single-channel search, accumulation and maintenance of signal source database and processing of results
  • Detection of any kind of radio emissions indoor, including signals with dynamic frequency-time structure (frequency hopping), noise-like signals, ultra-wide band (UWB) signals etc.
  • Continuous radio signal recording within the band up to 24 MHz
  • Technical analysis, determination of modulation type and evaluation of radio signal parameters
  • Analysis of signal parameters and localization of Wi-Fi sources (when ARC-ABS External Wi-Fi Analyzer is available)
  • Search of intermodulation interferences
  • Evaluation of the radio emission levels
  • Wire network monitoring
  • Indoor radio monitoring

Basic Specifications

Operating frequency range for each channel 9 kHz – 8000 MHz
Frequency range for one of the channels with external frequency down-converter available 9 kHz - 18 (40) GHz
Input attenuator 0 to -30 dB with 2 dB increment
Maximum allowable input voltage 23 dBm
IF rejection, min. 70 dB
Image rejection, min. 70 dB
Intermodulation free dynamic range (3rd and 2nd order) 75 dB
Input IP3, attenuator off, min. 0 dBm
Input IP3 with 30 dB attenuator running 30 dBm
Transfer factor irregularity at operating frequencies of the basic configuration, max. ±3 dB
When operated with internal reference generator
Relative error of frequency tuning ±5x10-7
When Operated with External Reference Generator
Relative error of frequency tuning ±1x10-9
Panoramic Spectrum Analysis
Panoramic spectrum analysis rate up to 10 GHz/s
Detected signal minimum duration from 1 s
Sensitivity with 3.125 kHz discreteness depending on the frequency 0.8 - 1.5 V
Automated single-channel and multi-channel direction finding
DF method Correlative interferometer
Operating azimuth range 0° - 360°
Operating frequency range 1.5 - 8000 MHz (replaceable antenna systems)
Field sensitivity Depends on antenna system used
Instrument accuracy (RMS) Depends on antenna system used
Processed signal minimum duration 10 ms
Indoor Radio Monitoring
Coupling attenuation of antenna switches between channels (within range 25 – 3000 MHz),, min. 40 dB
System total sensitivity (wattage of a transmitter in an 8 x 8m room with 99% detection) 50 W
Wire Network Monitoring
Signal detection level:
within 0.05 - 10 kHz 1 mV, max.
within 10 kHz - 1 MHz 100 V, max.
within 1 MHz - 30 MHz 10 V, max.
Input impedance of the probe
ARC-ASP2 1 MOhm, max.
ARC-PSP2 1 kOhm, max.
Max. input voltage of ARC-ASP2 network probe
below 60 Hz 400 V
from 60 Hz to 20 kHz 50 V
from 20 kHz to 5 MHz 10 V
Max. input voltage of ARC-PSP2 network probe 400 V
Radio Channel Monitoring, Technical Analysis and Broadcast Recording
Max. processing bandwidth:
within 9 kHz - 25 MHz 1 MHz
within 25 - 110 MHz range 5 MHz
within 110 - 220 MHz range 10 MHz
within 220 - 8000 MHz range 24 MHz
Types of recorded data radio signal sampling (I/Q), bearing, demodulated signals, spectrograms, time
Continuous recording of radio signal within the band Up to 40 MHz
Continuous recording time Depends on storage volume
Demodulated signal recording
Demodulator bandwidth 250 kHz, 100 kHz, 50 kHz, 12 kHz, 6 kHz, 3 kHz
Receiver sensitivity in AM mode 1.5 V, max.
Receiver sensitivity in FM (narrow) mode 0.8 V, max.
Receiver tuning discrete 1 Hz
Demodulation types AM, FM, SSB, AT
Operating Parameters
Operating temperature range 0°C +45°C
AC network power supply 90 - 250 V
Vehicle power supply 10 - 15 V
Power consumption (without PC), max. 70 W
Dimensions of central unit, max. 490 x 400 x 200 mm
Weight of central unit, max. 12 kg

Transportable and Portable Means for Radio Monitoring