Keysight Fieldfox N9935A

Keysight Fieldfox N9935A

FieldFox Handheld Microwave Spectrum Analyser, 9 GHz

Key features of the Keysight N9935A:

  • 100 kHz to 9 GHz frequency range
  • Expand capabilities with optional tracking generator, interference analyser, built-in power meter, and more
  • Make accurate spectrum analyser measurements (± 0.5 dB) without needing warm-up
  • Locate interfering signals using the intuitive spectrogram display and recording capability
  • Easily measure average and pulse power with a USB power sensor, pulse measurements with time gating
  • Lightest microwave handheld spectrum analyser at only 6.6 lb. (3.0 kg)

For technical sales, pricing and product demonstrations contact our test equipment engineers on 0330 313 3220 or email


:Maximum Frequency:9 GHz
:SA Start Frequency:5 kHz
:Number of Built-In Ports:2 ports
:Instrument Type:Spectrum Analyser
:Cable and Antenna Analyser:No
:Spectrum Analyser:Yes - Standard
:Vector Network Analyser:No
:Additional SA Based Features:•Built-In Power Meter •Extended Range Transmission Analysis (ERTA) •Real-Time Spectrum Analysis Noise Figure Measurements Over-The-Air Measurements
:System Features :•Built-In DC Source •GPS Receiver - Internal Only •Remote Control Capability
:Power Measurement Using USB Sensor:•CW or Swept-Frequency •Frequency-Offset •RF Pulse Test with Peak Sensor
:Standard Attenuator Range:30 dB
:Standard Attenuator Step:5 dB
:DANL @1 GHz:-155 dBm
:Maximum Analysis Bandwidth:10 MHz
:Phase Noise @1 GHz (1 MHz offset):-113 dBc/Hz
:Phase Noise @1 GHz (10 kHz offset):-111 dBc/Hz
:Phase Noise @1 GHz (30 kHz offset):-110 dBc/Hz
:TOI @1 GHz (3rd Order Intercept):+15 dBm
:Applications Available:Yes
:Maximum Real-Time Bandwidth:10 MHz
:Bandwidth Options:10 MHz (standard)
:Performance Level:◆◆◆◇◇◇
:Applications-Cellular:•89600 VSA Software •Over-The-Air LTE FDD and 5GTF
:Applications-Digital Video:89600 VSA Software
:Applications-General Purpose:•AM/FM Tune and Listen •Field Strength Measurement •SCPI Code Compatibility •Spectrogram •Stimulus Response
:Applications-Wireless Connectivity:89600 VSA Software