Programmable Active Crystal Filters with crystal filter based filtering system, and a software programmable running, 1.25 KHz steps.

The following picture is the ‘before and after’ spectrum situation.

ACF4 VHF 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.

  • Programmable Active Crystal Filter (US Patent Protected) 136-174
  • Crystal filter based filtering system
  • Software programmable tuning, 1.25 KHz steps
  • Sharp filtering response
  • Front end LNA included for low noise figure
  • User adjustable gain
  • High linearity
  • Transmitter Bypass (TXBP) module as optional.