Keysight handheld spectrum analyzers include Fieldfox handheld RF and microwave analyzer models.
Go from detection to decision with the rugged, all-in-one FieldFox Handheld Analyzer up to 44 GHz.
| VNA capabilities | No |
| Maximum frequency | 44 GHz |
| Maximum IQ streaming bandwidth | 120 MHz |
| Maximum analysis bandwidth | 120 MHz |
Identify interference, verify signal coverage, optimize performance, and use gapless IQ data for spectrum monitoring, demodulation, and 5G NR quality metrics.
Perform in-depth troubleshooting and maintenance for RF cables and antennas, identifying faults with time-domain reflectometry and measuring S-parameters.
Make accurate, user-definable channel power measurements with the built-in power meter. Pair with an external USB peak power sensor to efficiently characterize pulsed RF signals.
Generate analog modulations and user-defined pulse sequences with the built-in pulse signal generator.
| VNA capabilities | Yes – optional, No |
| Maximum frequency | 10 GHz to 54 GHz |
| Maximum analysis bandwidth | 40 MHz to 120 MHz |
| Maximum IQ streaming bandwidth | 1 MHz to 120 MHz |
Go from detection to decision with the rugged, all-in-one FieldFox Handheld Analyzer up to 44 GHz.
FieldFox delivers all-in-one capability for spectrum monitoring, signal analysis and generation, and interference hunting — built for performance in both field and lab environments.
| Measure signals from 9 kHz to 44 GHz with the Keysight N9961D FieldFox Handheld Analyzer. | Perform spectrum analysis, pulse generation, and power measurements. |
| Capture elusive signals with up to 120 MHz gap-free, real-time bandwidth. | Stream wideband IQ data with bandwidth up to 120 MHz. |
| Make accurate spectrum analyzer measurements (±0.2 dB) without requiring instrument warm-up. | Use the intuitive touchscreen for simplified file management. |
| Carry one lightweight unit at 3.6 kg (8 lb) in a rugged, weatherproof design. |
AC/DC adapter
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