N9912A 4GHz FieldFox RF


N9912A 4GHz FieldFox RF Analyzer

Key features of Keysight’s FieldFox handheld RF analyzer, include:

  • Integrated QuickCal eliminates the need to carry a calibration kit into the field, simplifying cable and antenna test and providing worry-free accuracy and repeatability with every measurement.
  • Immediate calibration with FieldFox’s CalReady makes the unit calibration ready at the cable and antenna test port immediately following power-up or preset.
  • A task-driven user interface derived directly from standard field test procedures guides performance tasks naturally and easily.
  • Unmatched sweep speed reduces time-to-problem resolution with test times more than 50 percent faster than traditional RF handheld instruments.
  • Fast fault location with 1001-point resolution and 96-dB dynamic range in the spectrum analysis mode.
  • Versatile field usability with its lightweight (6.2 lbs.), transflective display, backlit keys, simple data transfer and modern connectivity. The water-resistant chassis withstands wide temperature ranges and humid environments, meeting tough environmental standards (MIL-PRF-28800F).
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N9912A 4GHz FieldFox RF Analyzer


  • Cable and antenna analyzer for return loss, one-port cable loss, distance to fault, line sweeping, and VSWR measurements
  • Handheld network analyzer (S11, S21, phase, and Smith Chart)
  • Handheld spectrum analyzer, optional preamplifier
  • Standard CAT and optional VNA: 2 MHz to 6 GHz
  • Spectrum Analyzer (optional): 100 kHz to 6 GHz
  • Carry the world’s most integrated handheld RF analyzer: standard model includes cable and antenna analyzer
  • Expand capabilities with optional T/R VNA, spectrum analyzer, built-in power meter, and more
  • Save time by measuring RL and DTF simultaneously in the same sweep
  • Calibrate simply in the field with QuickCal
  • Easily measure average and pulse power with a USB power sensor
  • Lightest, all-in-one analyzer at only 6.2 lb. (2.8 kg)


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