Interference Hunting Training Course Quick overview This course will provide theoretical and practical fundamentals needed to effectively identify and locate radio frequency interference issues. It begins with an overview of basic RF principles, signal types, propagation and spectrum allocation. The application of various interference hunting tools, including monitoring receivers, spectrum analyzers and drive test tools will also be discussed using real-live examples from the eld. Methods of radiolocation (direction nding) and signal analysis will be demonstrated using live signal sources and hands-on exercises.
Who should attend?
How will you benet?
Engineers involved in interference hunting and spectrum clearing ■ Civilian and military spectrum managers ■ Regulatory agency eld engineers ■ Wireless industry RF engineers ■ Cable industry RF engineers ■ Law enforcement / intelligence ofcers
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Day One
General RF principles related to interference hunting ■ Application of different interference hunting tools ■ Spectral and signal analysis ■ Direction nding principles and applications ■ Best practices for identifying and resolving interference issues
(General principles and basic introduction) )
9:00–10:00 General RF principles
11:30–12:00 Antennas
Frequency / wavelength (relationship between) ■ Power / attenuation (how to measure, etc.) ■ Measurement units (dBm, dBμV, conversions, etc.) ■ Modulation vs. unmodulated signals ■ Noise (including noise oor)
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10:00–10:30 Signal characteristics Bandwidth ■ Analog modulation types (CW, AM, FM, etc.) ■ Digital modulation types (FSK, QPSK, QAM, etc.) ■
10:30-11:00 Propagation Propagation characteristics by frequency range (HF, VHF, UHF, etc.) ■ Factors affecting propagation (ionospheric conditions, intervening objects, rain fade, etc.) ■ Non-OTA propagation (conducted emissions, etc.) ■ Reections / multipath ■
11:00–11:30 Spectrum overview General overview of spectral allocations (what is where) Band-specic overviews (HF, VHF, UHF, etc.) ■ Technology specic overviews (US cellular bands, military, etc.) ■ Baselining ■ Spectrum clearning/refarming ■ Researching spectral allocations / licensing
Overview of antenna types (omni, directional, etc.) ■ Relationship between antenna characteristics and frequency/modulation ■ Unintentional radiators
12:00–1:00 Lunch
principles of direction nding nding 1:00–2:00 Basic principles What is direction nding? ■ Uses of direction nding ■ Overview / comparison of direction-nding methodologies ■ Mapping / triangulat triangulation ion ■
2:00–3:00 Overview of interference hunting tools Spectrum analyzers ■ Monitoring receivers ■ Drive test systems ■ Antennas ■ Other tools ■
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3:00–5:00 Basic spectral analysis Understanding and interpreting spectrum displays Understanding and interpreting waterfal waterfalll diagrams (spectrograms) ■ Other spectral analysis modes (persistence display, e.g.) ■ Numerical measurements (use of makers/lines) ■ ■
Day Two
(Advanced topics and practical exercises) )
9:00–9:30 Interference types
11:30–12:00 Resolving interference issues
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Modulated vs. unmodulated sources ■ Uncorrelated interference / noise oor issues ■ Patterns in interference (time of day, reactive)
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9:30-10:00 Recognizing interference issues
12:00–1:00 Lunch
Typical signs of interference ■ Interpreting spectral issues ■ Diagnosing interference using instruments
1:00–5:00 Practical exercises
Determining type / location of interfering device ■ Communication with owners of interfering devices ■ Understanding legal / regulatory issues and remedies
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10:00–11:00 Analyzing specic interference issues Harmonics / intermodulation Narrowband vs. wideband interference ■ Use of demodulation / signal analysis ■ Device-specic interference (e.g. jammers, BDAs, etc.) ■ Long-term monitoring / recording ■ ■
Diagnosing and locating indoor interference ■ Diagnosing and locating outdoor interference ■ Drive testing / vehicle-based interference hunting (“last mile”) ■ Handheld, on-foot interference hunting (“last 100 meters”) ■ Source analysis (“last inch”) ■ Interference hunting challenges ■
11:00–11:30 Location of interfering signals Common transmitter and antenna types Interference-prone locations ■ Use of drive-test / vehicle tools ■ Use of handheld / portable tools ■ Antennas and direction nding systems ■ ■
For the current Rohde & Schwarz training schedule, visit: www.rohde-schwarz-training.com Rohde & Schwarz USA, Inc 8661A Robert Fulton Drive Columbia, MD 21046-2265 888-837-8772
