Never Sacrifice Capability or Portability

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 Keysight FieldFox configuration that best meets your needs.

  • Configure as a full, two-port VNA, time-domain reflectometer, vector voltmeter, cable and antenna analyzer, and more
  • Measure all four S-parameters simultaneously with a single connection and up to 95 dB of dynamic range
  • Perform accurate testing with QuickCal, full two-port unknown thru Cal, and Thru, Reflect, Line (TRL) calibration in the field
  • Measure average and pulse power easily with a USB power sensor.
  • Carry the lightest handheld VNA at only 3.0 kg (6.6 lb.)

What's included:

  • AC/DC adapter
  • Localized power cord
  • Rechargeable Li-ion battery
  • Soft carrying case with backpack and shoulder straps
  • Quick Reference Guide
Number of Built-In Ports
2 ports
Maximum Frequency
26.5 GHz
Number of Built-In Ports
Maximum Frequency
2 ports
26.5 GHz
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Additional CAT/VNA Based Features:
QuickCal (Subset)
DTF/TDR Cable Measurements
Mixed-Mode S-Parameters
Vector Voltmeter
Additional SA Based Features:
Built-In Power Meter
Cable and Antenna Analyzer:
Yes - Optional
Dynamic Range:
100 dB
Form Factor:
Instrument Type:
Vector Network Analyzer
Maximum Frequency:
26.5 GHz
Minimum Frequency:
30 kHz
Number of Built-In Ports:
2 ports
Output Power:
Up to 1 dBm
Spectrum Analyzer:
System Features:
GPS Receiver - Internal Only
Remote Control Capability
Built-In DC Source
Trace Noise:
0.004 dB rms
Vector Network Analyzer:
Yes - Standard
FieldFox Handheld Network Analyzer

N9928A FieldFox Handheld Software

Make your FieldFox handheld analyzer more capable with convenient software upgrades — engineered to deliver precise measurements in the field.

  • Carry one portable instrument that handles routine maintenance and in-depth troubleshooting.
  • Configure as a VNA, built-in power meter, vector voltmeter, and more.
  • Order software pre-installed or upgrade an existing instrument.

Instrument Control Software

  • Easily connect and control your handheld analyzer with no programming.
  • Acquire screen images and trace data in a few clicks.
  • Rapidly build custom automated test sequences in minutes.
  • Includes Application Programming Interfaces (APIs) for instrument  control from your PC.
FieldFox Handheld Software
FieldFox Handheld Network Analyzer

Interested in the N9928A FieldFox Handheld Network Analyzer?

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