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Hunt Down Elusive Signals

Interference hunting involves identifying and locating the source of unwanted radio signals or interference in a communication system. These disruptions can stem from co-channel, adjacent channel, or broadband interference. Direction finding (DF) techniques enable operators to pinpoint the exact location of the interfering source.

Tracking down these signals requires frequency visualization, measuring and logging field and signal strength. Spectrum analyzers visualize the frequency spectrum, identify unusual patterns, and use mapping capabilities to locate sources of interference, with real-time spectrum analysis (RTSA) for dynamic interference tracking.

Interference Hunting Solutions

FieldFox Interference Finder Solution 366 85574A

Interference Finder with DF Antenna

Perform last mile detection of an unknown signal source using manual signal triangulation.

Learn more about our DF antenna
Time Difference of Arrival (TDOA) solution using three FieldFox analyzers and KSMS software

Time Difference of Arrival (TDoA)

Determine the location of an unknown signal source using several FieldFox analyzers in separate geographical locations with synchronized GPS signals.

Learn more about our TDoA solution
S9910A FieldFox Software

Keysight Spectrum Management Software (KSMS)

Detect, locate, and mitigate interference issues. Control your spectrum, measure utilization, and identify interference, all in a single platform.

View our remote monitoring solution
Monitor 5G Field Interference

Monitor 5G Field Interference

Identify in-band and out-of-band interference with real-time spectrum analysis and signal capture capabilities.

View our 5G interference solution

Featured Resources

A Practical Guide to Locate and Mitigate Interference

Signal hunting grows increasingly complex in today’s crowded RF spectrum environment. Discover the most common problems and learn to detect, identify, locate, and mitigate problem signals.

View eBook
FieldFox Interference Hunting Solution

Overcome RF and Microwave Interference Challenges

Acquire strategies for tackling RF and microwave interference using RTSA. Learn about interference types in commercial and aerospace wireless networks and explore the benefits of RTSA for troubleshooting modern networks with elusive signals.

View application note
FieldFox Interference Hunting Resource

Investigate Interference Issues in the Field with RTSA

RTSA plays a pivotal role in revolutionizing interference solutions. This white paper discusses internal interference in communication networks and external interference in satellite ground stations.

View white paper
FieldFox Interference Hunting Resource

Why RTSA Is the Best When it Comes to Interference Hunting in the Field

This blog explains where traditional spectrum analysis falls short and real-time spectrum analysis (RTSA) excels when interference hunting in the field.

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FieldFox Interference Hunting Solution

Watch Related Demos

Spectrum Monitoring with TDoA

Discover the ultimate solution for detecting and locating interference issues in the RF spectrum with FieldFox and KSMS. Explore two approaches for locating interfering signals, RF fingerprinting and TDoA technologies.

Interference Analysis Using the Spectrogram

Signals can run, but they can't hide. Catch elusive, intermittent signals with FieldFox. This video highlights FieldFox's RTSA and interference analysis capabilities, which are critical for detecting and mitigating connectivity issues in modern wireless systems. FieldFox's built-in GPS and advanced features like spectrogram and waterfall display make it an invaluable tool for telecom professionals tackling signal interference from cellular, satellite, and unlicensed devices.

Detect Elusive Signals with RTSA

Learn how your microwave can affect Wi-Fi and Bluetooth connectivity. In this video, we explore microwave radiation using the FieldFox analyzer. Discover how RTSA can help you catch small, intermittent signals that traditional analysis misses. We show you how to adjust the attenuation and pre-amplifier for a better look and what happens when you add a microwave oven to the mix.

Interference Troubleshooting with RTSA

Explore the challenges of interference in 5G networks. Learn how RTSA helps detect and manage interference without disrupting communication services during 5G deployment, ensuring reliable network performance.

FieldFox Handheld Analyzers

Born in the lab, raised in the field.

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More Interference Hunting Resources

Solution Briefs 2023.03.21

FieldFox Microwave Analyzers Portable Satellite Test Solution for Field and Lab Applications

FieldFox Microwave Analyzers Portable Satellite Test Solution for Field and Lab Applications

Learn how to install, maintain, and troubleshoot satellite ground stations and end-user terminals that support satellite networks. Our brief describes a portable, accurate RF satellite test solution based on the FieldFox microwave analyzer. It verifies the performance of amplifiers, frequency converters, over-the-air (OTA) signal quality, transmit power, and more.

2023.03.21

Application Notes 2023.03.20

Getting Better Measurements on the Go with a FieldFox Handheld Analyzer

Getting Better Measurements on the Go with a FieldFox Handheld Analyzer

This application note provides tips to help you make more accurate measurements in the field for cable, antenna, network analysis and spectrum analysis applications.

2023.03.20

White Papers 2022.11.22

Four Measurements You Can Perform on the Go

Four Measurements You Can Perform on the Go

This white paper discusses the importance of commonly made radio frequency field measurements: real-time spectrum analysis (RTSA), noise figure, over-the-air measurements (OTA), and cable and antenna test (CAT).

2022.11.22

eBooks 2023.03.16

Six Essential 5G Field Tests Using FieldFox Handheld Analyzers

Six Essential 5G Field Tests Using FieldFox Handheld Analyzers

This eBook explains the six essential 5G field tests FieldFox handheld analyzers perform. Make your 5G transformation smooth with path loss characterization, base station coverage testing, and more.

2023.03.16

White Papers 2022.10.13

Reduce Interference Risk in Connected Medical Devices

Reduce Interference Risk in Connected Medical Devices

This white paper highlights the importance of coexistence testing in wireless equipment and a step-by-step guide on how it can be done in the lab.

2022.10.13

Technical Overviews 2024.01.14

Keysight Spectrum Management Software

Keysight Spectrum Management Software

Keysight Spectrum Management Software (KSMS) is a comprehensive software tool kit to modernize how frequency regulators, public and private network operators manage its frequency resource, detect, locate and mitigate interference issues, provide full stack spectrum optimization from RF to over the air analog and digital demodulation.

2024.01.14

Technical Overviews 2024.01.14

FieldFox Handheld Analyzers 4/6.5/9/14/18/26.5/32/44/50/54 GHz

FieldFox Handheld Analyzers 4/6.5/9/14/18/26.5/32/44/50/54 GHz

Now there’s a rugged, dependable handheld designed to deliver precise, lab-grade measurements up to 50 GHz. Learn more about the FieldFox microwave analyzers.

2024.01.14

Data Sheets 2024.01.14

85574A Handheld Direction Finding Antenna

85574A Handheld Direction Finding Antenna

This data summarizes the technical performance of an antenna used with the FieldFox handheld analyzers for the direction finding.

2024.01.14

Data Sheets 2024.03.19

FieldFox Handheld Analyzers

FieldFox Handheld Analyzers

The FieldFox datasheet update includes new C model versions.

2024.03.19

Data Sheets 2023.11.29

FieldFox Handheld Analyzers

FieldFox Handheld Analyzers

The FieldFox datasheet update includes new B model versions.

2023.11.29

Data Sheets 2024.03.05

FieldFox Handheld Analyzers 4/6.5/9/14/18/26.5/32/44/50 GHz

FieldFox Handheld Analyzers 4/6.5/9/14/18/26.5/32/44/50 GHz

This document is the FieldFox Data Sheet

2024.03.05

Configuration Guides 2024.03.06

FieldFox Handheld Analyzers 4/6.5/9/14/18/26.5/32/44/50/54 GHz (B and C models)

FieldFox Handheld Analyzers 4/6.5/9/14/18/26.5/32/44/50/54 GHz (B and C models)

This comprehensive handheThe FieldFox handheld analyzer configuration guide provides the potential customers to correctly pick the model and options to best fit their needs in technically and economically. By adding the new information of newly introduced C-Series FieldFox handheld analyzers (Code name Earhart) configuration information, customers can make their best purchase decision on the new C-Series FieldFox and upgrading their existing C-Series FF in later days.

2024.03.06

Flyers 2024.02.06

FieldFox Microwave Analyzers B-Series vs. A-Series Specifications

FieldFox Microwave Analyzers B-Series vs. A-Series Specifications

This is a one-pager to compare the key specs among different models within the FieldFox family.

2024.02.06

eBooks 2023.03.12

A Practical Guide to Locate and Mitigate Interference

A Practical Guide to Locate and Mitigate Interference

Signal hunting grows increasingly complex in today’s crowded RF spectrum environment. Here are the most common problems encountered as well as information on detecting, identifying, locating, and mitigating these problem signals.

2023.03.12

Application Notes 2023.02.23

Overcome RF and Microwave Interference Challenges

Overcome RF and Microwave Interference Challenges

Learn tips to overcome RF and microwave interference challenges and troubleshooting interference in the field with Real-Time Spectrum Analysis (RTSA).

2023.02.23

White Papers 2022.11.28

Investigate Interference Issues in the Field with RTSA

Investigate Interference Issues in the Field with RTSA

5G Field Testing with FieldFox

2022.11.28

Explore Our Most Popular Models

View All Models

N9918B Real Time Spectrum Analysis

N9918B FieldFox Handheld RF Analyzer

Max frequency: 26.5 GHz
Max bandwidth: 120 MHz

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N9953B FieldFox Handheld Microwave Analyzer

N9953B FieldFox Handheld RF Analyzer

Max frequency: 54 GHz
Max bandwidth: 120 MHz

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N9912C

N9912C FieldFox Handheld RF Analyzer

Max frequency: 10 GHz
Max bandwidth: 40 MHz

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N9915C FieldFox RF Analyzer

N9915C FieldFox Handheld RF Analyzer

Max frequency: 10 GHz
Max bandwidth:  120 MHz

Get quote

Interference Hunting: Frequently Asked Questions

Interference hunting is the process of detecting, locating, and mitigating interference issues impacting the performance of a wireless communication system. This involves monitoring the spectrum for signals impacting the performance and reliability of the communication system. Once the interfering signal is identified and characterized, use techniques such as direction finding to locate the source of the disruptive transmitter and mitigate the interference.

Depending on the method, interference hunting uses a variety of equipment to detect, locate, and mitigate interference issues. Remote monitoring software detects signals impacting the performance and reliability of the communication system. Tracking down these signals requires frequency visualization, measuring and logging field and signal strength.

Spectrum analyzers visualize the frequency spectrum, identify unusual patterns, and use mapping capabilities to locate sources of interference, with real-time spectrum analysis (RTSA) for dynamic interference tracking. Often paired with a spectrum analyzer, direction finding (DF) antennas indicate the general direction of the interfering source. Additionally, GPS receivers provide precise location and mapping data.  

Signal hunting grows increasingly complex in today’s crowded RF spectrum environment. Interference can cause problems such as data loss, signal degradation, and unstable network performance. This lowers the user experience with poor audio quality, dropped calls, and disrupted video streams. In a world where seamless communication is the expectation, interference hunting is crucial for preventing communication disruptions. 

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