What's New With FieldFox?

FieldFox Channel Scanning in car on the go

RF Explained Video Series

Check out the video short series tackling the toughest RF development and deployment challenges.

RTSA FieldFox

Keysight Spectrum Monitoring Software (KSMS)

Control your spectrum, measure utilization, and identify interference, all in a single platform.

Woman in keysight lab with FieldFox handheld analyzer and EMF antenna

5G Field Tests Video Course

  • Path loss and electromagnetic field (EMF) measurements
  • 5G NR over-the-air (OTA) demodulation
  • Interference troubleshooting with RTSA

Industry's Most Integrated Handheld Analyzer

Keysight's FieldFox family of portable 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 as a cable and antenna analyzer (CAT), vector network analyzer (VNA), spectrum analyzer, or an all-in-one combination analyzer.

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 22 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.

handheld spectrum analyzer used in field testing

Find The Model That's Right For You

View All Models

Already own one of these products? Visit Technical Support

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.

Featured Resources

View All Resources

View All Resources

Frequently Asked Questions ‑ FieldFox Handheld Analyzers

What are the benefits of using a handheld spectrum analyzer?

Spectrum analysis primarily measures the frequency, power, and noise of a signal. All of these are essential measurements in the field, where lugging a benchtop analyzer would be difficult. Handheld analyzers are portable, rugged, and lightweight. They are built to last in harsh conditions and overcome sun glare. Bring the solutions out in the field with you and never compromise capability or portability.

Does FieldFox have RTSA capabilities?

Yes, using real-time spectrum analysis (RTSA) up to 50 GHz, FieldFox can capture interfering signals in real-time. With a dynamic density display and high Fast Fourier Transform (FFT) rate, the FieldFox displays gap-free data capture. For more information about FieldFox RTSA, check out our brochure: FieldFox Handheld Analyzers with Real-time Spectrum Analysis (RTSA).  

What spectrum analyzer functions does a FieldFox perform?

The key spectrum analyzer functions of FieldFox are over-the-air (OTA) measurements, real-time spectrum analysis (RTSA), electromagnetic field (EMF) measurements, channel scanning, and noise figure. 

Want help or have questions?