KEYSIGHT N9918A is a handheld, lightweight, durable, cable and antenna analyzer, spectrum analyzer and network analyzer. It has 2 built-in ports.
The maximum frequency is 26.5 GHz (K band). The output power can reach 1 dBm. The trace noise is 0.004 dB rms.
Keysight’s FieldFox portable analyzers can handle tough work environments. They are useful for routine maintenance, deep troubleshooting, and more. Choose the Keysight FieldFox configuration that best meets your needs.
Features:
- – Standard model includes cable and antenna analyzer.
- – Expand capabilities with optional VNA, spectrum analyzer, built-in power meter, vector voltmeter, and more.
- – Save time by measuring DTF and TDR in the same sweep.
- – Measure all four S-parameters simultaneously.
- – Make accurate spectrum analyzer measurements (± 0.5 dB) without warm-up.
- – Calibrate easily with QuickCal.
- – Use the industry’s lightest all-in-one analyzer at only 3.0 kg (6.6 lb).
Cable and antenna analyzer (CAT), vector network analyzer (VNA)
- 30 kHz to 26.5 GHz
- CAT: Distance-to-fault, return loss, cable loss
- VNA dynamic range: 100 dB to 9 GHz, 90 dB to 18 GHz
- VNA: S11, S21, S22, S12, magnitude and phase
Spectrum analyzer
- 5 kHz to 26.5 GHz
- ± 0.6 dB amplitude accuracy, full band, over full temperature range of -10 to +55 °C (14 to 131 °F)
- Spur-free dynamic range: ≥ 105 dB
- Full-band tracking generator
Independent source, vector voltmeter (VVM), power and pulse measurements
- RF source: 30 kHz to 26.5 GHz, CW, CW coupled, and tracking
- VVM: 30 kHz to 26.5 GHz, compare phase and electrical length
- Average power, peak power, and pulse characterization with USB power sensors
- Built-in power meter: 5 kHz to 26.5 GHz
FieldFox instrument attributes
- Remote control via iPad or iPhone
- Battery life: 3.5-hours; weight: 3.0 kg or 6.6 lbs
- Operating temperature: -10 to +55 °C (14 to 131 °F)
What’s included:
- 1x AC/DC adapter
- 1x Localized power cord
- 1x Rechargeable Li-ion battery
- 1x LAN cable
- 1x Soft carrying case with backpack and shoulder strap
- 1x Quick Reference Guide

FIELDFOX HANDHELD SOFTWARE
Make your FieldFox handheld analyzer more capable with convenient software upgrades — engineered to deliver precise measurements in the field.
- – Carry one portable instrument that handles routine maintenance and in-depth troubleshooting.
- – Configure as a VNA, spectrum analyzer, built-in power meter, vector voltmeter, and more.
- – Order software pre-installed or upgrade an existing instrument.
PATHWAVE VECTOR SIGNAL ANALYSIS (89600 VSA) SOFTWARE
- – Record signals in the field and evaluate them later using 89600 VSA.
- – Demodulate and perform comprehensive vector signal analyzing 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.
The Keysight N9918A is a handheld combination microwave analyzer. The standard model includes a frequency range of 30 kHz to 26.5 GHz and the following functionalities:
- Cable and antenna analysis
- Measurements: DTF (dB, linear, VSWR), return loss and DTF, return loss (dB), and 1-port cable loss
- Calibrations: CalReady, OSL, and response cal
- Note: 2-port insertion loss is NOT included with the base model, if 2-port insertion loss is needed, order Option 210
- Note: Base analyzer does not have phase information, for S11 or S21 phase, order Option 210
The Keysight N9918A FieldFox Combination Analyzer is equipped to handle routine maintenance, deep troubleshooting and anything in between. The Keysight N9918A (Agilent) FieldFox delivers high-quality measurements wherever you need to go. Add a FieldFox N9918A to your trouble-shooting toolkit, and carry precision with you.
The N9918A microwave combination analyzer mainly works as a cable and antenna analyzer. It can also be set up to include a spectrum and network analyzer.
FieldFox can be ordered with extra features. These include a power meter, a signal generator, and a vector voltmeter. It also has an interference analyzer, a variable DC source, and a built-in GPS receiver. You can control it remotely using an iPad or iPhone.
This unit remains in excellent condition, the team has fully tested it, and we guarantee its functionality. It comes with a 30 day right of return should it not perform to your expectations. Please review pics and text carefully before bidding to verify accuracy of description.
It will arrive with a fresh calibration performed by an ISO 17025-accredited lab.
OPTIONS INSTALLED:
| N9918A-010 | Vector network analyzer time domain | |
| N9918A-030 | Remote control capability | |
| N9918A-112 | QuickCal | |
| N9918A-330 | Pulse Measurements | |
| N9918A-210 | Vector network analyzer transmission/reflection | |
| N9918A-211 | Vector network analyzer full 2-port S-parameters | |
| N9918A-212 | 1-port mixed-mode S-parameters | |
| N9918A-233 | Spectrum analyzer | |
| N9918A-235 | Pre-amplifier | |
| N9918A-236 | Interference analyzer and spectrogram | |
| N9918A-238 | Spectrum analyzer time gating | |
| N9918A-302 | USB power sensor support | |
| N9918A-307 | GPS receiver | |
| N9918A-308 | Vector voltmeter | |
| N9918A-309 | DC bias variable-voltage source | |
| N9918A-310 | Built-in power meter | |
| N9918A-312 | Channel scanner |















