Anritsu S251A

Anritsu S251A

Cable and Antenna Analyzer

The Anritsu S251A is one of our used RF Cable Antenna Analyzers.

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Product Overview:



Site Master is the instrument of choice for transmission line/antenna installation and maintenance. It is the best way to reduce maintenance expenses and improve quality. It replaces stacks of heavy, expensive, and complex test equipment. Site Master’s frequency domain reflectometry technique allows it to find problems before they become catastrophic faults, thereby creating a huge cost savings.


  • Frequency Range:  625MHz - 2500MHz
  • Frequency Accuracy (CW Mode):  75ppm
  • Frequency Resolution:  100kHz
  • Immunity to interfering RF signals up to +2:  +10 dBm, Reflection / +30 dBc Transmission
  • Return Loss:  Range - 0dB to 54dB, Resolution - 0.01
  • Accurate return loss/SWR measurements
  • Accurately tests RF transmission lines and antennas
  • Immunity to live site RF interference
  • Distance-to-fault windowing functions
  • Insertion Loss/Gain (S235A, S250A, and S251A)
  • Optional wattmeter
  • Optional built-in bias tee (S251A)
  • Synthesizer accurate to 75 ppm
  • Internal memory saves up to 70 traces
  • Direct printing via RS-232 serial port
  • Remote operation via RS-232 serial port