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 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.
The Industry's Most Integrated Handheld Analyzer
Keysight's FieldFox portable analyzers are equipped to handle your toughest working environments during routine maintenance, in-depth troubleshooting, and anything in between. Choose the software-enabled Keysight FieldFox configuration that best meets your needs.
- Configure FieldFox as a cable and antenna analyzer (CAT), handheld vector network analyzer (VNA), handheld spectrum analyzer, or an all-in-one combination analyzer.
- Get frequency 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.
- Lightweight, portable, and rugged RF analyzer.
FieldFox RF Analyzer Software
Offering 25+ license-key activated software applications.
- Real-time spectrum analyzer (RTSA)
- Analog demodulation
- Interference hunting
- IQ analyzer
Cable and Antenna Testing (CAT)
- Vector network analysis (VNA)
- 2 port S-parameters
- TDR Cable Measurements
5G / LTE Field Testing
- EMF Measurements
- Over-the-air (OTA) testing
- Channel Scanner
- Wideband Analysis
- USB Power Sensor Measurements
- Built-in Power Meter
- Pulse Measurements
- Peak Power Sensor
- Remote Control
- GPS Receiver
- Indoor/Outdoor Mapping
- DC Bias Variable Voltage Source
Buy One FieldFox, Get Two Software Free
Do you work with radio frequency (RF) cable trouble-shoots, over-the-air (OTA) wireless communications, analog radio, or electromagnetic interference (EMI) pre-compliance testing? Claim your offer today!
Purchase a qualifying FieldFox Handheld Analyzer and get two of our most popular FieldFox software options for free.
Buy One Get Two Featured Software
TDR Cable Measurements
Identify the location and nature of faults along cables using time-domain reflectometry measurements.
GSSN / GPS Receiver
Attach geolocation tags to measurements with a built-in GNSS/GPS receiver.
Evaluate Electromagnetic Interference (EMI) pre-compliance limits and perform regulatory audits.
Demodulate and characterize AM and FM signals of radio frequency (RF) transmitters.
Bundle Your Solution!
Speed up your decision-making with a bundle that meets all your needs. These optimized bundles save you time and money and let you quickly configure your FieldFox to its full potential.
Bundle today; get the right solutions for a fraction of the price.
Aerospace and Defense Bundles
- Satellite Ground Station Testing
- Spectrum Management
- Radar Applications
Wireless Communication Bundles
- 4G/5G Over-the-air (OTA) Testing
- Interference Troubleshooting
- Cable and Antenna Testing (CAT)
General Purpose Bundles
- Electromagnetic Interference (EMI)
- Spectrum / Signal Analysis
- Vector Network Analysis (VNA)
Bundle Your Bundles
Explore Bundles for the PXA Signal Analyzer, PSG Signal Generator, and FieldFox Handheld Analyzer.
What's New With FieldFox?
RF Explained Video Series
Check out the video short series tackling the toughest RF development and deployment challenges.
Keysight Spectrum Monitoring Software (KSMS)
Control your spectrum, measure utilization, and identify interference, all in a single platform.
5G Field Tests Video Course
- Path loss and electromagnetic field (EMF) measurements
- 5G NR over-the-air (OTA) demodulation
- Interference troubleshooting with RTSA
Time Difference of Arrival (TDOA) with KSMS
TDOA is an emerging directional finding technique providing accurate results with as little as ten meters of uncertainty.
Using this direction finding method, several FieldFox analyzers in separate geographical locations with synchronized GPS signals can determine the location of an unknown signal source.
Detect, locate, and mitigate interference issues.
Real-Time Spectrum Analysis At Your Fingertips
Find the Model That is Right for You
Technical Overviews 2023.07.27
FieldFox Handheld Analyzers 4/6.5/9/14/18/26.5/32/44/50/54 GHz
Technical Overviews 2021.10.31
FieldFox Handheld Analyzers 4/6.5/9/14/18/26.5/32/44/50 GHz
Data Sheets 2023.07.10
FieldFox Handheld Analyzers 4/6.5/9/14/18/26.5/32/44/50 GHz
Data Sheets 2023.11.29
FieldFox Handheld Analyzers
Configuration Guides 2023.08.06
FieldFox Handheld Analyzers 4/6.5/9/14/18/26.5/32/44/50/54 GHz (B and C models)
Solution Briefs 2023.03.21
FieldFox Microwave Analyzers Portable Satellite Test Solution for Field and Lab Applications
Six Essential 5G Field Tests Using FieldFox Handheld Analyzers
White Papers 2022.11.22
Four Measurements You Can Perform on the Go
Application Notes 2020.04.01
Transmission Lines and Reflected Signals
FieldFox Microwave Analyzers B-Series vs. A-Series Specifications
View All Resources
Frequently Asked Questions - FieldFox Handheld Analyzers
What is a FieldFox?
FieldFox is the industry's first 50 GHz handheld microwave analyzer. The Swiss army knife of electrical measurement, FieldFox functions as a vector network analyzer (VNA), spectrum analyzer (SA), or an all-in-one combination analyzer.
What are essential 5G field tests?
There are six essential field tests for 5G networks. These include (1) path loss characterization; (2) base station coverage testing; (3) component carrier power measurements; (4) over-the-air control channel coverage testing; (5) network quality and beam performance verification; and (6) EMF exposure evaluation. To learn more about using FieldFox to perform 5G field testing, check out our eBook: Essential 5G Field Tests or view this short course: How to test 5G networks in the field.
Why choose a FieldFox handheld analyzer?
FieldFox provides benchtop accuracy in a portable package. Built to withstand your toughest working environments, FieldFox is rugged enough to meet MIL specs and enables 5G, satellite, and radar operators to make true RF coverage measurements up to 54 GHz and beyond. Lightweight, rugged, and portable, FieldFox is ready to meet your RF test needs. For more information on the world’s most integrated handheld analyzer, see our technical overview.
What are the benefits of using a handheld network analyzer?
Network analyzers are used to verify the performance of various components such as antennas, amplifiers, cables, and many other active or passive devices. Network analyzers tend to be sensitive equipment, but many network measurements involve devices that live outside the laboratory. Because of this, having a handheld analyzer to carry with you into the field is extremely valuable.
Does FieldFox function as an RF Analyzer?
Yes, you can configure FieldFox as a cable and antenna analyzer (CAT), vector network analyzer (VNA), spectrum analyzer (SA), or an all-in-one combination analyzer. With the FieldFox, you can make 5G field test measurements with wide analysis bandwidth up to 120 MHz.
What network analyzer functions does a FieldFox perform?
The key network analyzer functions of FieldFox are pulse measurements, TDR (Time Domain Reflectometry) cable measurements, QuickCal, and full 2-port S-parameters.