The present invention relates to a method and a system for tuning a radio filter. The radio filter comprises at least one resonator module, each of said at least one resonator module having a tuning mechanism, a filter input connection, a filter output connection. High frequency broad band input and output signals of each of said at least one resonator module are sensed and processed to tune the radio filter. The processing of the sensed input and output signals includes processing in a low-frequency range.

 
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