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Keysight Fieldfox N9917B Handheld RF Analyzer 18Ghz

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

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.

Standard model includes cable and antenna analyzer (CAT).
Capture elusive signals with 120 MHz gap-free, real-time bandwidth.
Measure all four S-parameters simultaneously with 115 dB dynamic range.
Make accurate spectrum analyzer measurements (± 0.3 dB) without warmup.
Perform over-the-air measurements for 5G NR and LTE.
Use GPS/GNSS for geolocation and timestamping.
Carry one lightweight unit at 3.4 kg (7.4 lb).

What’s included:

AC/DC adapter
Localized power cord
Rechargeable Li-ion battery

Option Breakdown

010 – Time Domain (TDR) / distance-to-fault measurements (cable fault location using VNA)
208 – Power measurement vs frequency (works with USB power sensors)
210 – VNA transmission/reflection (basic S11, S21 measurements)
211 – Full 2-port VNA (adds S12, S22 → full S-parameters)
212 – Mixed-mode S-parameters (used for differential measurements, e.g. balanced lines)
215 – Advanced TDR / cable measurements (enhanced time-domain analysis)

📊 Spectrum Analyzer / RF Analysis

233 – Spectrum Analyzer mode (core RF signal viewing)
235 – Built-in preamplifier (improves sensitivity for weak signals)
350 – Real-Time Spectrum Analyzer (captures fast/transient signals)
351 – I/Q Analyzer (modulation analysis, digital signals like QAM, LTE, etc.)

⚡ Power & Signal Features

302 – USB power sensor support (external power probes)
309 – DC bias source (apply voltage to devices under test)
310 – Built-in power meter capability
330 – Pulse measurement (analyzing pulsed RF signals like radar)

📈 Advanced Measurement

356 – Noise Figure measurement (used for RF amplifier/system noise performance)