FieldFox Is Now a Pulse Generator

The Industry's Most Integrated Handheld RF 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, pulse generator, or all-in-one combination RF 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.

Learn More About Each Software Option

FieldFox RF Analyzer Software

Offering 25+ license-key activated software applications.

5G / LTE Field Testing

  • EMF measurements
  • Over-the-air (OTA) testing
  • Channel scanner
  • Wideband analysis

Spectrum Analysis

  • 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

Power Measurements

  • USB power sensor measurements
  • Built-in power meter
  • Pulse measurements
  • Peak power sensor

Utilities

  • Remote control
  • GPS receiver
  • Indoor/outdoor mapping
  • Pulse generator

Never Sacrifice Capability or Portability

Lightweight, rugged, and portable, FieldFox is ready to meet your RF test needs. Stay ahead of changing measurement requirements by upgrading your handheld RF analyzer in the field with 25+ convenient, user-installable license keys.

What's New With FieldFox Handheld RF Analyzers?

Interference Hunting

Identify and locate the source of unwanted emitters and interfering signals with real-time spectrum analysis.

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 in the field with the FieldFox handheld RF analyzer.

5G Field Testing Course

Explore path loss, electromagnetic field (EMF) measurements, and 5G NR over-the-air (OTA) demodulation with RTSA.

Real-Time Spectrum Analysis At Your Fingertips

Take a Tour

  • Start immediately
  • Self-serve? Yes
  • Experience duration: 3 mins

Request a Live Demo

  • Start in < 2 days
  • Self-serve? No
  • Experience duration: 30 mins

Request a Free Trial

  • Start immediately
  • Self-serve? Yes
  • Experience duration: 30 days

Use Cases

Explore Our Most Popular Models

View All Models

N9918B FieldFox Handheld RF Analyzer

Max frequency: 26.5 GHz
Max bandwidth:
120 MHz

N9953B FieldFox Handheld RF Analyzer

Max frequency: 54 GHz
Max bandwidth:
120 MHz

N9912C FieldFox Handheld RF Analyzer

Max frequency: 10 GHz
Max bandwidth:
40 MHz

N9915C FieldFox Handheld RF Analyzer

Max frequency: 10 GHz
Max bandwidth:
 120 MHz

FieldFox Handheld RF Analyzers Featured Resources

Frequently Asked Questions - FieldFox Handheld RF Analyzers

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