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MS27101A Interference Hunter

Remote Spectrum Monitor

RSM is a small half-rack receiver which can be deployed 100s or 1000s of km from the control center. It is an ideal solution for spectrum monitoring.

Anritsu MS27101A Remote Spectrum Monitor

Anritsu offers three models of remote spectrum monitoring products, designed to both mitigate interference problems and to identify illegal or unlicensed signal activity.  The MS27101A is housed in a ½ rack enclosure with 1U height, designed exclusively for indoor applications.   MS27102A is an IP67 rated device which operates outdoors, with the ability to be mounted on poles or walls (using the included mounting bracket).  The MS27103A is a multi-port spectrum monitor (12 RF In ports or optionally 24 RF In ports) which is ideal for cellular, DAS and other applications requiring the use of multiple antennas.

  • 9 kHz to 6 GHz
  • Sweep speed up to 24 GHz/s
  • Integrated web server to view, control and conduct measurements via web browser
  • Hardware watchdog timer to insure long-term stability for remotely deployed monitors
  • Low spur levels for accurate signal discovery
  • 20 MHz instantaneous FFT bandwidth

In-Building Coverage Mapper

  • Frequency range: 9 kHz to 6 GHz, maximum 6 channel per walk-through
  • Location tracking uses a wearable tracking device, so no GPS signal is needed
  • Easy floorplan import function uses simple floorplan photos
  • NEON Command software display results of entire walk-through in both 2D and 3D
  • Battery pack for up to 4 hours of coverage mapping
  • Light, stylish backpack for both convenience and unobtrusive scanning in public areas
  • Accepts all antennas sold by Anritsu (see Anritsu Antenna Catalog for more information)
  • The bundle includes:
    • Remote Spectrum Monitor MS27101A
    • NEON Tracking Unit
    • NEON Signal Mapper application for tracking and NEON Command software for capturing and displaying results
    • Battery pack with up to 4 hour life
    • Wireless router for tracking device and spectrum analyzer communication
    • Custom foam to house all components inside backpack and protect them during walkthroughs and transportation
    • Backpack
    • Note: The solution also requires an Android device and Windows PC, which are not included as part of the solution.

The In-Building Coverage Mapper Bundle MS27101A-IBCM is a fully integrated coverage mapping solution for both in-building and outdoor applications. The solution provides users with a complete coverage mapping solution that enables the verification of proper signal field strength across multiple frequencies in a single walk-through. Any signal from 9 kHz to 6 GHz can be scanned including: all public bands (all LTE bands), Wi-Fi, and NB-IoT, as well as public service bands (P25, DMR, LTE/FirstNet, UMTS/WCDMA, LMR channel).

The solution is especially ideal for facilities where there is no GPS signal available, such as multi-story buildings or sub-terrain floors. This is because the solution does not rely on a GPS signal, or even a cellular or Wi-Fi signal for that matter. Instead it uses a wearable tracking device that coordinates RF measurements with the exact location in the building. This also makes it ideal for traditionally difficult to cover areas (e.g., stairwells, elevator shafts, and standpipe cabinets) whose exact locations are called out by the NFPA 72 and IPC 510 regulations as requiring coverage for public safety in-building networks.

Building floorplans are easily entered via the photo import function. Coverage mapping results are stored either locally on the device for security reasons or in the cloud for documentation and reporting convenience. Results can be viewed in 2D or 3D to aid in pinpointing exact locations of weak coverage. Multi-floor buildings are supported and battery life is a robust 4 hours.

PC based IQ analysis software for use with IQ data captured from a Remote Spectrum Analyzer

IQ Signal Master MX280005A Vector Signal Analysis Software provides a comprehensive suite of measurements that deliver post processing and analysis of IQ data files captured on the Remote Spectrum Analyzers. The software is designed to bring together all the essential tools required to capture IQ data files and then gain critical insights into the nature of the captured signals. Modes within the application, support the ability to capture or stream IQ data into the PC memory, perform modulation quality measurements and playback IQ data with high frequency and time resolution.

A file conversion mode allows IQ data captured on the supported analyzers to be converted to the format required for playback using a Vector Signal Generator MG3710E further enhancing the overall capability.

The software is designed for national RF spectrum regulators, security agencies and defense electronics companies who need to gain critical insight into RF signals that have been captured in the field. It is also suitable for organizations that need to monitor and protect RF spectrum from unlicensed operators or unintended sources of interference

IQ Signal Master MX280005A Vector Signal Analysis Software

Connecting to the Remote Spectrum Monitor Using an Ethernet Network

Communication with the MS27101A is done via the GBit Ethernet port located on the instrument. Options are provided for using DHCP to obtain an IP address dynamically or for setting up a static IP address. The instrument is shipped with the default static IP address of Once a connection is made to the instrument via a laptop/PC, the IP type can be changed via the user interface presented by the monitor’s integrated web server.

For DHCP usage, Anritsu offers an Ethernet Discovery Program which queries your network for all connected devices. The Ethernet Discovery Program can be found on the Anritsu website.

Some customers may prefer to use a Domain Name Server (DNS) where the spectrum monitor’s hostname can be resolved into its dynamic IP address. A DNS server provides the ability to create a hostname. Examples might include hostnames such as “” or “”. There are several free DNS services available. One such service used by Anritsu is You will need to create an account and select a hostname for your instrument.

Further details about configuring your Ethernet connection can be found in our Configuration Quick Start Guide available for download on the Library tab.

  • Detection of illegal or unlicensed AM/FM/Cellular broadcasts
  • Sensitive site monitoring (national borders, military facilities, nuclear power plants…)
  • Airport monitoring (with communication frequencies often adjacent to FM bands)
  • Monitor jails/prisons for illegal broadcasts
  • Positive Train Control (PTC), insure clear communication channels for trains
  • Cable TV, to mitigate leakage to outside environment and leakage into cable system
  • Government regulators enforcing spectrum policies
  • In-Building wireless network coverage mapping – Validate proper coverage for any band or signal from 9 kHz to 6 GHz. This is ideal for network contractors who need to provide proper coverage documentation to the Authority Having Jurisdiction (AHJ) or building owner in order to receive their occupancy permit (OP).
  • Public safety regulation validation – With regards specifically to NFPA 72 or IFC 510, the In-Building Coverage Mapper Bundle MS27101A-IBCM provides the scanning capability and reporting to satisfy these regulations.
  • Outdoor DAS and public venue coverage mapping – Map the coverage area and more importantly find “dead zones” in your venue or outdoor DAS network so they can be addressed appropriately.

Remote Spectrum Monitor Specifications

Frequency Range 9 kHz to 6 GHz (tunable to 0 Hz)
Tuning Resolution 1 Hz
Maximum sweep speed 24 GHz/s
Resolution bandwidth 10 Hz to 3 MHz in 1 – 3 sequence (-3 dB bandwidth)
Video bandwidth 10 Hz to 3 MHz in 1 -3 sequence (-3 dB bandwidth) (auto or manually selectable)
SSB Phase noise -98 dBc/Hz @ 10 kHz offset
Dynamic range >106 dB at 2.4 GHz, 2/3/(TOI-DANL) in 1 Hz RBW
Measurement range DANL to maximum continuous input
Reference level range -150 dBm to +30 dBm
Attenuator range 0 dB to 50 dB in 5 dB steps
Amplitude units Log scale modes: dBm, dBµV
Amplitude accuracy ± 2.5 dB
Operating Temperature range -40° C to 50° C

MS27101A-IBCM System Level Specifications

Maximum number of channels per walkthrough 6
Maximum number of floors Unlimited. In addition, each floor height can be defined individually if necessary.
Battery life 4 hours
Total unit weight 11 kg
Floor plan input JPG, GIF, PNG, or other photo formats
Location tracking method Wearable tracker device. A GPS signal is not necessary.

Hardware Options

Option Description
MS27102A-0128 Vector Signal Analysis Enabled (use with MX280005A)
MS27101A-0706 9 kHz – 6 GHz Spectrum Monitor

Vision Options

Option Description
MS27101A-0400 Vision Monitor Enabled
MS27101A-0401 Vision Locate Enabled (requires option 400)
MS27101A-0407 High-Speed Port Scanner
MS27101A-0486 Coverage Mapping (requires option 407)

Optional Accessories

Option Description
760-288-R Transit Case
2000-1371-R Ethernet Cable, 2.13m (7 ft)
2000-1528-R GPD Antenna, SMA(m) with 5 m (15 ft) cable, 3 dBi gain, requires 5 VDC
MA8100A-001 NEON Signal Mapper - 3D in-building coverage mapping solution for use with MS27101A
(1 year license)
MA8100A-003 NEON Signal Mapper - 3D in-building coverage mapping solution for use with MS27101A
(3 year license)
MA8100A-005 NEON Signal Mapper - 3D in-building coverage mapping solution for use with MS27101A
(5 year license)
MA8100A-100 NEON Signal Mapper - 3D in-building coverage mapping solution for use with MS27101A
(Perpetual license with 3 years cloud service and 3 years maintenance and support)

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