What are you looking for?
FieldFox Handheld Spectrum Analyzers
Carry precision into the field
![Keysight FieldFox handheld spectrum analyzer family](/content/dam/keysight/en/img/ind/aerospace-defense/field-test/fieldfox-five-screenshots-field-test.png)
What's new with FieldFox handheld spectrum analyzers?
![Easily capture signals with FieldFox handheld spectrum analyzers](/content/dam/keysight/en/img/other/video-thumbnails/FieldFox_Spectrum_Monitoring_TDOA_Thumbnail.jpg)
Interference Hunting
Identify and locate the source of unwanted emitters and interfering signals with real-time spectrum analysis.
![Control you spectrum by pairing Keysight Spectrum Management Software with FieldFox handheld spectrum analyzers](/content/dam/keysight/en/img/prd/scopes-analyzers-meters/fieldfox/fieldfox-in-action/fieldfox-military-rtsa-field-test_16x9.png)
Keysight Spectrum Monitoring Software (KSMS)
Control your spectrum, measure utilization, and identify interference, all in a single platform.
Fox Hunt
Join this 9-part video series on hunting down elusive signals with the FieldFox handheld spectrum analyzer.
![Woman in keysight lab with FieldFox handheld spectrum analyzer and EMF antenna](/content/dam/keysight/en/img/prd/scopes-analyzers-meters/fieldfox/fieldfox-in-action/FieldFox_5G_FieldTests_EMF.png)
5G Field Testing Course
Explore path loss and electromagnetic field (EMF) measurements and 5G NR over-the-air (OTA) demodulation with RTSA.
Industry's most integrated handheld spectrum analyzer
Keysight's FieldFox portable spectrum analyzers come equipped to handle routine maintenance, in-depth troubleshooting, and anything in between. Choose the software-enabled Keysight FieldFox configuration that best meets your needs.
- Get coverage up to 54 GHz with precision comparable to benchtop results.
- Make 5G field test a reality with wide analysis bandwidth up to 120 MHz.
- Capture small, interfering signals with wideband, real-time analysis.
- Perform measurements with one of the lightest instruments in the industry — 30% lighter than other handheld analyzers.
- Configure FieldFox handheld spectrum analyzer as a cable and antenna analyzer (CAT), vector network analyzer (VNA), spectrum analyzer, or an all-in-one combination analyzer.
Never miss a signal
- Easily capture and demodulate intermittent, beam sweeping technologies used in 5G and radar systems.
- Detect small signals once masked by stronger signals with RTSA.
- Measure signals as narrow as 5.52 µs with 100% Probability of Intercept (POI) and full amplitude accuracy.
- Accelerate communications system development by quickly switching to over-the-air (OTA) measurements.
FieldFox RF analyzer software
Offering 25+ license-key activated software applications.
![Interference Analyzer and Spectogram software screenshot](/content/dam/keysight/en/img/prd/scopes-analyzers-meters/fieldfox/fieldfox-software/Interference-Analyzer-800x450.png)
Spectrum Analysis
- Real-time spectrum analyzer (RTSA)
- Analog demodulation
- Interference hunting
- IQ analyzer
![2 port s parameters software screenshot](/content/dam/keysight/en/img/prd/scopes-analyzers-meters/fieldfox/fieldfox-software/2-port-s-parameters-800x450.png)
Cable and Antenna Testing (CAT)
- Vector network analysis (VNA)
- 2 port S-parameters
- TDR Cable Measurements
![RTSA Interference hunting on FieldFox Handheld Analyzer](/content/dam/keysight/en/img/prd/scopes-analyzers-meters/fieldfox/fieldfox-software/RTSA-mode-with-interference-800x450.png)
5G / LTE Field Testing
- EMF Measurements
- Over-the-air (OTA) testing
- Channel Scanner
- Wideband Analysis
![Pulse Measurement with USB Peak Power Sensor software](/content/dam/keysight/en/img/prd/scopes-analyzers-meters/fieldfox/fieldfox-software/USB-pulse-800x450.png)
Power Measurements
- USB Power Sensor Measurements
- Built-in Power Meter
- Pulse Measurements
- Peak Power Sensor
![Indoor and Outdoor Mapping for data collection](/content/dam/keysight/en/img/prd/scopes-analyzers-meters/fieldfox/fieldfox-software/mapping-800x450.png)
Utilities
- Remote Control
- GPS Receiver
- Indoor/Outdoor Mapping
- DC Bias Variable Voltage Source
Never sacrifice capability or portability
Field testing modern communications networks puts new demands on your equipment and requires trade-offs between capabilities and portability. With over 25 software-enabled measurement capabilities in one portable, battery-powered unit, FieldFox handheld spectrum analyzer is the most capable handheld analyzer in the industry. Stay ahead of changing measurement requirements by upgrading your handheld analyzer in the field with convenient, user-installable license keys.
![portable spectrum analyzer used in field testing](/content/dam/keysight/en/img/prd/scopes-analyzers-meters/fieldfox/fieldfox-in-action/fieldfox-satellite-base-station/FieldFox_satellite_800x600_14.png)
Find the model that's right for you
View All Models
Featured resources
FieldFox handheld spectrum analyzers: frequently asked questions
Extend your capabilities with the right tools
Get more functionality out of your test instrument today by pairing it with the right accessories to improve productivity and the right PathWave design and test automation software to accelerate your product development.
Want help or have questions?