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 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.

Select the functionality you need today and add more features as your needs change.

FieldFox Is Now a Pulse Generator

FieldFox Handheld Analyzers

Born in the lab, raised in the field.

View Software Options and Upgrades


  • Frequency coverage up to 50 GHz
  • Bandwidth up to 10 MHz
  • Real-Time Spectrum Analysis


  • Frequency coverage up to 54 GHz
  • Bandwidth up to 120 MHz
  • 5G NR demodulation and RTSA capabilities


  • Frequency coverage up to 10 GHz
  • Bandwidth up to 120 MHz
  • High-performance spectrum and network analysis down to 3 kHz
  • Real-time analysis for interference hunting 

Explore Our Most Popular Models

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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 Analyzer Software and System Features

Remote control capability with iPad and iPhone

Engineers and technicians can now remotely monitor and control their FieldFox using their iOS device such as an iPhone, iPad, or iPod Touch. FieldFox’s Remote Viewer iOS app emulates the front panel of the unit, letting you simply press any FieldFox key right from your iOS device. The app also allows you to instantly access technical documents such as data sheets.

FieldFox’s Data Link software makes report generation and documentation easier

FieldFox’s complimentary Data Link software provides data transfer, data definition and report generation. You can add markers and limit lines to traces, and you can load cable files and antenna factors using Data Link.

Remote control via LAN and FieldFox programming

All FieldFox models can be controlled using SCPI over LAN and USB.

Built-in variable voltage DC bias

FieldFox has a built-in variable voltage DC bias source. The DC bias source can provide DC power to amplifiers under test and bias tower mounted amplifiers (TMA) when you need to sweep through the TMA to reach the antenna (bias tees available separately).

Built-in GNSS/GPS

A built-in GNSS/GPS receiver provides geo- location tags to measurements. The geo data-time, latitude, longitude, and elevation-can be displayed and saved in data files. In addition to location information, the GPS provides an external reference to improve FieldFox frequency accuracy.

USB keyboard and mouse support

FieldFox supports use of USB keyboards and mice to simplify the input of text such as file names while working in the field.

Featured Resources for FieldFox Handheld Analyzer Software

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