FieldFox Handheld RF and Microwave Analyzers

Carry precision into the field

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. Every piece of gear in your field kit must prove its worth. Choose the Keysight FieldFox configuration that best meets your needs. 

  • NEW! Wider analysis bandwidth – up to 100 MHz – makes 5G field test a reality
  • NEW! Capture the smallest interfering signals with wide-band, real-time measurements (RTSA)
  • Configure as a cable and antenna analyzer (CAT), vector network analyzer (VNA), spectrum analyzer, or an all-in-one combination analyzer
  • All models feature USB power measurements, built-in power meter, vector voltmeter, and remote control with iOS device
  • Spectrum analyzers provide extended range transmission analysis (ERTA)

Be Ready to Test with FieldFox Handheld Analyzers

The new FieldFox B-Series spectrum analyzers support key instrument functions including signal analyzer, full 2-port vector network analyzer, real-time spectrum analyzer, over-the-air demodulation, CW signal source, power meter, and more.

  • Meet MIL-PRF-28800F Class 2 compliance with this rugged analyzer
  • View data in all lighting situations with a clear screen and backlit keys
  • Carry one integrated and lightweight unit (7.1 lbs)
  • Operate the handheld analyzer while wearing gloves thanks to the spaced keypad
  • Enjoy long operating life — up to 4 hours with each field-replaceable battery
  • Implement greater security with the ability to overwrite user data and enable/disable LAN or USB ports

Find the Model that's Right for You

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Capture every signal in real time 

  • Capture intermittent signals with 100 MHz gap-free real-time bandwidth
  • Detect small signals once masked by stronger signals
  • Measure signals as narrow as 12 µs with 100% probability of intercept (POI) with full amplitude accuracy
  • GPS/GNSS receiver for geolocation and timestamping
  • Series-B models support over-the-air measurements for 5GTF and LTE


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