The following picture is the ‘before and after’ spectrum situation. The left diagram is a screenshot of a standard field spectrum measurement, in which the reception signal is marked in green.  The diagram on the right is a screenshot of the same spectrum at the output of an Active Crystal Filter. Note how the presence of an Active Crystal Filter provides an outstanding non-desired spectrum rejection, enhancing the overall reception quality and increasing the system coverage area.ACF4 Spectrum Situation

  • Programmable Active Crystal Filters (US Patent Protected) 380 - 490 MHz
  • Crystal based filtering system, 12.5KHz, 25KHz and 50KHz BW
  • Software programmable tuning, 3.125 KHz steps
  • Sharp filtering response
  • Front end LNA included for low noise figure
  • User adjustable gain