Field technician using FieldFox and radio

Save on the N9912A and N9923A

Price reduction by 20% and 25% for the N9912A and N9923A, respectively, including all options and upgrades with up to 4 or 6 GHz of frequency coverage.

The Industry's Most Integrated Handheld 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.

  • Get frequency coverage up to 54 GHz with precision comparable to benchtop results.
  • Configure FieldFox as a cable and antenna analyzer (CAT), vector network analyzer (VNA), spectrum analyzer, or an all-in-one combination analyzer.
  • 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.
handheld spectrum analyzer used in field testing

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.

The Custom Power Behind Our Instruments

Pushing the boundaries of technology requires instantaneous bandwidth, spurious-free dynamic range, and signal fidelity beyond basic measurements. Keysight powers every performance product with custom MMICs, designed in-house, manufactured in our proprietary indium phosphide (InP) and gallium arsenide (GaAs) fab with custom ASIC signal processing that ensure the industry’s fastest, most reliable measurements. Count on Keysight to accelerate your next innovation. Keysight's custom MMICs enabled the FieldFox small form factor, highest functional density and performance in its class.






PathWave Vector Signal Analysis Software

PathWave Vector Signal Analysis Software (89600 VSA)

  • Record signals in the field and evaluate them later using 89600 VSA.
  • Demodulate and perform comprehensive vector signal analysis to optimize your deployment.
  • Decode and verify MAC, RLC, and RRC-layer messages across multiple radio frames.
  • Analyze and troubleshoot signals in cellular, wireless connectivity, aerospace, defense, and general-purpose applications.

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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.

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Frequently Asked Questions - FieldFox Handheld Analyzers

What is a FieldFox?  

FieldFox is the industry's first 50 GHz handheld microwave analyzer. The Swiss army knife of electrical measurement, FieldFox functions as a vector network analyzer (VNA), spectrum analyzer (SA), or an all-in-one combination analyzer.

What are essential 5G field tests?

There are six essential field tests for 5G networks. These include (1) path loss characterization; (2) base station coverage testing; (3) component carrier power measurements; (4) over-the-air control channel coverage testing; (5) network quality and beam performance verification; and (6) EMF exposure evaluation. To learn more about using FieldFox to perform 5G field testing, check out our eBook: Essential 5G Field Tests or view this short course: How to test 5G networks in the field.  

Why choose a FieldFox handheld analyzer?  

FieldFox provides benchtop accuracy in a portable package. Built to withstand your toughest working environments, FieldFox is rugged enough to meet MIL specs and enables 5G, satellite, and radar operators to make true RF coverage measurements up to 54 GHz and beyond. Lightweight, rugged, and portable, FieldFox is ready to meet your RF test needs. For more information on the world’s most integrated handheld analyzer, see our technical overview.

What are the benefits of using a handheld network analyzer?  

Network analyzers are used to verify the performance of various components such as antennas, amplifiers, cables, and many other active or passive devices. Network analyzers tend to be sensitive equipment, but many network measurements involve devices that live outside the laboratory. Because of this, having a handheld analyzer to carry with you into the field is extremely valuable.

Does FieldFox function as an RF Analyzer?

Yes, you can configure FieldFox as a cable and antenna analyzer (CAT), vector network analyzer (VNA), spectrum analyzer (SA), or an all-in-one combination analyzer. With the FieldFox, you can make 5G field test measurements with wide analysis bandwidth up to 120 MHz.

What network analyzer functions does a FieldFox perform? 

The key network analyzer functions of FieldFox are pulse measurements, TDR (Time Domain Reflectometry) cable measurements, QuickCal, and full 2-port S-parameters.

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