FieldFox Handheld RF and Microwave Analyzers

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FieldFox Handheld RF Analyzer, up to 10 GHz
FieldFox N9912C
FieldFox Handheld RF Analyzer, up to 10 GHz
FieldFox Handheld Microwave Analyzer, 14 GHz
FieldFox N9916A
FieldFox Handheld Microwave Analyzer, 14 GHz
FieldFox Handheld Microwave Analyzer, 18 GHz
FieldFox N9917A
FieldFox Handheld Microwave Analyzer, 18 GHz
FieldFox Handheld Microwave Analyzer, 26.5 GHz
FieldFox N9918A
FieldFox Handheld Microwave Analyzer, 26.5 GHz
FieldFox Handheld Microwave Spectrum Analyzer, 14 GHz
FieldFox N9936A
FieldFox Handheld Microwave Spectrum Analyzer, 14 GHz
FieldFox Handheld Microwave Spectrum Analyzer, 18 GHz
FieldFox N9937A
FieldFox Handheld Microwave Spectrum Analyzer, 18 GHz
FieldFox Handheld Microwave Spectrum Analyzer, 26.5 GHz
FieldFox N9938A
FieldFox Handheld Microwave Spectrum Analyzer, 26.5 GHz
FieldFox Handheld Microwave Analyzer, 32 GHz
FieldFox N9950A
FieldFox Handheld Microwave Analyzer, 32 GHz
FieldFox Handheld Microwave Analyzer, 44 GHz
FieldFox N9951A
FieldFox Handheld Microwave Analyzer, 44 GHz
FieldFox Handheld Microwave Analyzer, 50 GHz
FieldFox N9952A
FieldFox Handheld Microwave Analyzer, 50 GHz
FieldFox Handheld Microwave Spectrum Analyzer, 32 GHz
FieldFox N9960A
FieldFox Handheld Microwave Spectrum Analyzer, 32 GHz
FieldFox Handheld Microwave Spectrum Analyzer, 44 GHz
FieldFox N9961A
FieldFox Handheld Microwave Spectrum Analyzer, 44 GHz
FieldFox Handheld Microwave Spectrum Analyzer, 50 GHz
FieldFox N9962A
FieldFox Handheld Microwave Spectrum Analyzer, 50 GHz
ENA Vector Network Analyzer
XN3 E5061B
ENA Vector Network Analyzer
ENA Vector Network Analyzer
XN3 E5063A
ENA Vector Network Analyzer
Multi Transceiver RF Test Set
VT7 E6416A
Multi Transceiver RF Test Set
Multi Transceiver RF Test Set
VT7 E6464A
Multi Transceiver RF Test Set
CXG RF Vector Signal Generator, 9 kHz to 6 GHz
XG1 N5166B
CXG RF Vector Signal Generator, 9 kHz to 6 GHz
CXA Signal Analyzer, 9 kHz to 26.5 GHz
XA1 N9000B
CXA Signal Analyzer, 9 kHz to 26.5 GHz
Basic Spectrum Analyzer (BSA)
XA1 N9321C
Basic Spectrum Analyzer (BSA)
Basic Spectrum Analyzer (BSA)
XA1 N9322C
Basic Spectrum Analyzer (BSA)
Basic Spectrum Analyzer (BSA)
XA1 N9323C
Basic Spectrum Analyzer (BSA)
Basic Spectrum Analyzer (BSA)
XA1 N9324C
Basic Spectrum Analyzer (BSA)
Keysight Streamline USB Vector Network Analyzer, 4.5 GHz
XN4 P9370A
Keysight Streamline USB Vector Network Analyzer, 4.5 GHz
Streamline Vector Network Analyzer, 9 kHz to 4.5 GHz, 2-port
XN4 P9370B
Streamline Vector Network Analyzer, 9 kHz to 4.5 GHz, 2-port
Keysight Streamline USB Vector Network Analyzer, 6.5 GHz
XN4 P9371A
Keysight Streamline USB Vector Network Analyzer, 6.5 GHz
Streamline Vector Network Analyzer, 9 kHz to 6.5 GHz, 2-port
XN4 P9371B
Streamline Vector Network Analyzer, 9 kHz to 6.5 GHz, 2-port
Keysight Streamline USB Vector Network Analyzer, 9 GHz
XN4 P9372A
Keysight Streamline USB Vector Network Analyzer, 9 GHz
Streamline Vector Network Analyzer, 9 kHz to 9 GHz, 2-port
XN4 P9372B
Streamline Vector Network Analyzer, 9 kHz to 9 GHz, 2-port
Keysight Streamline Series USB Vector Network Analyzer, 14 GHz
XN4 P9373A
Keysight Streamline Series USB Vector Network Analyzer, 14 GHz
Streamline Vector Network Analyzer, 9 kHz to 14 GHz, 2-port
XN4 P9373B
Streamline Vector Network Analyzer, 9 kHz to 14 GHz, 2-port
Keysight Streamline USB Vector Network Analyzer, 20 GHz
XN4 P9374A
Keysight Streamline USB Vector Network Analyzer, 20 GHz
Streamline Vector Network Analyzer, 9 kHz to 20 GHz, 2-port
XN4 P9374B
Streamline Vector Network Analyzer, 9 kHz to 20 GHz, 2-port
Keysight Streamline USB Vector Network Analyzer, 26.5 GHz
XN4 P9375A
Keysight Streamline USB Vector Network Analyzer, 26.5 GHz
Streamline Vector Network Analyzer, 100 kHz to 26.5 GHz, 2-port
XN4 P9375B
Streamline Vector Network Analyzer, 100 kHz to 26.5 GHz, 2-port
Streamline Vector Network Analyzer, 100 kHz to 44 GHz, 2-port
XN4 P9377B
Streamline Vector Network Analyzer, 100 kHz to 44 GHz, 2-port
Streamline Vector Network Analyzer, 9 kHz to 9 GHz, 4-port
XN4 P9382B
Streamline Vector Network Analyzer, 9 kHz to 9 GHz, 4-port
Streamline Vector Network Analyzer, 9 kHz to 20 GHz, 4-port
XN4 P9384B
Streamline Vector Network Analyzer, 9 kHz to 20 GHz, 4-port
Wideband Streaming Recording Solution
S7960A
Wideband Streaming Recording Solution
Wideband Streaming Playback Solution
S7970A
Wideband Streaming Playback Solution
Wideband Streaming Record and Playback Solution
S7980A
Wideband Streaming Record and Playback Solution
Massive MIMO and MIMO RF Beamforming Test Accelerator for 5G
VT7 S9160A
Massive MIMO and MIMO RF Beamforming Test Accelerator for 5G
XA5  Signal Analyzer
XA5 SA6210A
XA5 Signal Analyzer
Performance Audio Spectrum Analyzer
AZ2 U8903B
Performance Audio Spectrum Analyzer
FieldFox N9961A - FieldFox Handheld Microwave Spectrum Analyzer, 44 GHz

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.

  • Make accurate spectrum analyzer measurements (± 0.5 dB) without warmup.
  • Capture intermittent signals with 10 MHz gap-free, real-time bandwidth.
  • Characterize radar pulse profiles with a portable solution.
  • Perform over-the-air measurements for 5G TF and LTE.
  • Capture I/Q data for RF signal monitoring and analysis.
  • Use GPS/GNSS for geolocation and timestamping.
  • Carry one lightweight unit at 3.2 kg (7.1 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
Calibration & Warranty
R-51B-001-Z Return to Keysight Warranty - 3 years
R-51B-OC Return to service center warranty and service plan
R1280A Return to Keysight service center - warranty and service plan
Additional Material
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Over-the-Air Performance Measurement - 5G (Application Note)
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Specifying Calibration Standards and Kits for Keysight Vector Network Analyzers (Application Note)
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Techniques for Precise Interference Measurements in the Field (Application Note)
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Techniques for Time Domain Measurements (Application Note)
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Precise Measurement Calibrations in the Field (Application Note)
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Correlating Microwave Measurements between Benchtop and Handheld Analyzers (Application Note)
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Average and Peak Power Testing in the Field with the FieldFox (Application Note)
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Validation of Radar System Performance in the Field (Application Note)
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Techniques for Advanced Cable Testing (Application Note)
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Satellite Earth Stations: Validation, Maintenance and Repair (Application Note)
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Overcoming RF and Microwave Interference Challenges (Application Note)
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Automotive System Verification and Troubleshooting (Application Note)
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5G Over-the-Air Performance Measurement and Evaluation (Application Note)
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FieldFox Handheld Analyzers with Real-time Spectrum Analysis (RTSA) (Brochure)
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New radiated emission measurement and analysis software "EPX/RE" (Brochure)
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FieldFox Handheld Analyzer Software (Brochure)
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Keysight Technologies Carry precision with you! - FieldFox - (Flyer)
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FieldFox Microwave Spectrum Analyzers, 32/44/50 GHz – Product Fact Sheet (Product Fact Sheet)
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FieldFox A/B/C/D-Series Quick Start Guide (Quick Start Guide)
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FieldFox Handheld Analyzers 4/6.5/9/14/18/26.5/32/44/50 GHz (Technical Overview)
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FieldFox Handheld Analyzers (Technical Overview)
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5G mmW Air Interface Characterization with Phased Array Antenna (Technical Overview)
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Investigate Interference Issues in the Field with RTSA - FieldFox (White Paper)
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Rental Partners - Four FieldFox Measurements You Can Perform on the Go (White Paper)
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Investigate Interference Issues in the Field (White Paper)
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Four Measurements You Can Perform on the Go (White Paper)
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Smarter Airports: Field Assurance for Airports and Air Traffic Control Systems (White Paper)
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Innovative Use Cases for Handheld Analyzers in the Medical Field (White Paper)