Categories > RF Test Equipment > Vector Network Analyzers > 50 GHz VNAs

Keysight N9951A FieldFox Handheld Microwave Analyzer

300 kHz – 44 GHz, 2 Ports

The Keysight N9951A FieldFox is an all-in-one RF analyzer with a 300 kHz – 44 GHz frequency range, 2 ports, and up to 110 dB dynamic range. Complete RF interference hunting, cable & antenna analysis, vector network analysis, and spectrum analysis with a single device.

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Product Info Related Products

Frequency Range	300 kHz – 44 GHz
Dynamic Range	Up to 110 dB (10 MHz – 20 GHz) Up to 100 dB (20 – 44 GHz)
Number of Ports	2 ports
Output Power	–6 dBm max leveled (typical, 32–44 GHz using both ports)
Trace Noise	0.004 dB rms up to 20 GHz 0.008 dB rms up to 50 GHz
Test Port Input Power	+25 dBm max (0.3 W), ±40 VDC
System Impedance	50 Ω nominal
IF Bandwidth Options	10 Hz – 100 kHz
Measurement Speed	478 µs/point (S11/S21, 1001 pts, 100 kHz IFBW)
Reference Frequency Accuracy	±0.7 ppm (spec), ±0.4 ppm (typical), ±0.010 ppm (with GPS)
Form Factor	Handheld, portable field unit