1. Anritsu Mobile Interference Hunting System
Interference Hunting Made Easy
Corporate
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Product
Service
Customer

2. Mobile Interference Hunting System
Anritsu mobile interference hunting system is designed to automatically identify and locate sources of interference
Maps provided on tablet/laptop provide directions to locate interference sources

3. Mobile Interference Hunting System
Basic configuration for the Anritsu interference hunting system:
MX280007A InterferenceHunterTM Software
Anritsu handheld spectrum analyzer
Off-the-shelf omnidirectional magnet mount RF antenna with GPS (or use separate GPS antenna)
Windows Tablet (recommended) or PC with Windows 7 or 8 operating system running the MX280007A software
Antenna R
Anritsu Handheld Spectrum Analyzer
Windows Tablet with Mounting Hardware

4. InterferenceHunter User Interface
GPS positions car location on map
Power vs Time/Position
Colored “breadcrumbs’ left along drive indicating power levels along drive
Grey circle indicates probable interferer location
Breadcrumbs ‘Power v Color’ Chart
User Interface for mobile interference hunting system

5. Mobile Interference Hunting System
Wide frequency range (9 kHz to 43 GHz possible)
with appropriate Anritsu handheld spectrum analyzer and antenna
Compatible with most existing Anritsu HH spectrum analyzers - (no firmware updates needed, GPS required)

6. Mobile Interference Hunting System
Type of Interferers Found
Low power
Narrowband, wideband
Modulated
Pulsed signals (similar to radar)
Signals hidden in LTE uplink channels
“Black” TV/radio stations & BTS cellular equipment operating illegally
Channel Power Measurements Used
Track signals drifting in frequency
Track both wideband and narrowband interference
Spectrum Analyzer in Channel Power Mode

7. Mobile Interference Hunting System
Shown with Anritsu Part No R Antenna
Mobile Interference Hunting System Startup
Connect Spectrum Analyzer to tablet with USB cable
Set analyzer RBW/VBW, Frequency, Channel BW, GPS ON, Preamp
Load Map into MX280007A, adjust settings as needed
Start the system and begin driving

8. Mobile Interference Hunting System Maps
MX280007A works with both GoogleMapsTM and OpenStreetMapTM
GoogleMaps requires an internet connection (a USB modem is typically used)
Care must be taken so modem frequencies do not interfere with signals being hunted
OpenStreetMap is downloaded to tablet/PC hard disk and imported into the interference hunting program
Maps/Instructions for OpenStreetMap can be found here:
Both mapping systems are open source and free of charge !

9. Special Features & Capabilities
Interference within LTE uplink bands difficult to hunt
Traffic information often masks presence of interference
Anritsu ‘Min Hold’ setting eliminates LTE traffics signals from measurement consideration
Comparison of LTE Uplink Band screenshots taken before and after MIN HOLD applied n
Interferer obscured by LTE traffic on left can clearly be seen on screen on right

10. Other Features & Innovations
Multi-emitter mode of operation, ideal for finding multiple leakage sources such as cable TV
Extensive on-site Help Menu
Zoom In/Out controls provided
Full-Screen Spectrum View on tablet
Visual indicators show power levels along drive path
Ability to capture and store interference hunt log files for later playback and analysis
Squelch Control to optimize hunting for low-level signals
Voice Prompts – enables one-person operation !

11. Finding CATV Interference
CATV Leakage tends to occur at multiple locations in a neighborhood. Select ‘Multiple Emitter’ from ‘Mode’ tab.
Enter Threshold level.
Drive along various streets in the neighborhood.
Multiple locations will be identified on map indicating positions of interference sources.
Sample CATV Spectrum

12. Drive in area of interest.
Spectrum Clearing
Identify areas where signals may exceed a user settable threshold Select ‘Spectrum Clearing’ from ‘Mode’ tab.
Enter Threshold level.
Drive in area of interest.
Multiple locations will be identified on map showing threshold exceptions.

13. ‘Burst Mode’ Available for Receiver-like Speeds
To find extremely fast signal pulses, Anritsu has developed “Burst Detect”
Uses FFT technology to capture and process intermittent signals
Capable of 20,000 measurement per second, 15 MHz bandwidth… Entire span captured simultaneously
Available on MS2720T Spectrum MasterTM, the MT8220T BTS MasterTM, and the MS203xC VNA MasterTM

14. Log Files - San Francisco
Next set of slides depict interference hunting process in San Francisco Financial District.
Interference signal hidden downtown SF
Total hunt time approximately 20 minutes

15. Mobile Interference Hunting System
Vehicle Position
Position Estimate

16. Mobile Interference Hunting System
Vehicle Position
Position Estimate

17. Mobile Interference Hunting System
Vehicle Position
Position Estimate

18. Mobile Interference Hunting System
Vehicle Position
Position Estimate

19. Mobile Interference Hunting System
Vehicle Position
Position Estimate

20. Mobile Interference Hunting System
Vehicle Position
Position Estimate

21. Key Differentiators Frequency Range Value High Sensitivity
Eliminate need for expensive proprietary antenna
Spectrum Analyzer can be re-purposed for other applications (signal analysis, demodulations, etc)
One person operation
Frequency Range
9 kHz to 43 GHz possible
High Sensitivity
Detect signal from further distances
User Friendliness & Driver Safety
Requires < 5 min setup, 1-person operation)
Small unobtrusive antenna

22. Additional Equipment for Interference Hunt
Anritsu mobile interference hunting system allows the user to find interference positions quickly and easily
For pin-pointing exact interference locations (such as on rooftops or inside office buildings), the MA2700A Handheld InterferenceHunter can be used
MA2700A
Pinpointing interference location with MA2700A
Opt 25 Mapping

23. Thanks Anritsu Mobile Interference Hunting System
Interference Hunting Made Easy
Thanks