Keysight N9913B FieldFox Handheld Microwave Analyser, 4 GHz

A lightweight, durable, cable and antenna analyser, spectrum analyser, network analyser, and more.

Keysight's FieldFox portable analysers are equipped to handle your toughest working environments during routine maintenance, in-depth troubleshooting, and anything in between.

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Keysight N9913B FieldFox Handheld Microwave Analyser, 4 GHz Product Description

FieldFox, the industry's most versatile portable analyser, has launched this new line of future-ready analysers to address the ever-increasing demands of 5G, satellite communications, signal monitoring and electronic warfare applications. All existing FieldFox A Series measurement capabilities (except QuickCal) are supported on the new FieldFox B Series. 100 MHz (Option B10) and 40 MHz (Option B04) analysis bandwidth options will be available on the B models, with 10 MHz as the standard option.

  • Up to 100 MHz of analysis bandwidth, I/Q capture and real-time bandwidth, wideband IF output
  • 10 dB improved DANL over previous generation FieldFox, up to 15 dB better in some bands
  • Greater than 115 dB VNA system dynamic range
  • New high output power source >8 dBm in some bands
  • 10 dB improved phase noise over previous generation FieldFox
  • 5G NR and LTE-A demodulation with 89600 VSA software (Optional)
  • Over-the-Air (OTA) measurements for 5G TF and LTE FDD (Optional)
  • Supports record and playback of I/Q capture that can be analyzed with custom I/Q open architecture solutions (Optional)
  • Multi-GNSS (Global Navigation Satellite System) support for geolocation and time stamping: GPS+SBAS, GLONASS, BDS, Galileo (Optional)


  • N9913B - 4 GHz FieldFox RF Analyzer
  • Base model includes cable and antenna analyser
  • Expand capabilities with optional vector network analyser, spectrum analyser, real-time spectrum analyser, and more
  • Capture intermittent signals with 100 MHz gap-free real-time bandwidth
  • Simultaneously measure all four S-parameters with 115 dB system dynamic range
  • Make accurate spectrum analyser measurements (±0.3 dB) without warm-up
  • Validate network performance with over-the-air measurements for 5GTF and LTE
  • GPS/GNSS receiver for geolocation and time stamp precision
  • Lightest all-in-one analyser at only 7.35 lb. (3.34 kg)
  • New high capacity battery providing over 5 hours of battery life

Keysight N9913B FieldFox Handheld Microwave Analyser, 4 GHz Resources

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