Hello, i am trying to filter a CW of 2.4 Ghz of an Hackrf one with a SAW Banpassfilter with bandwidth of 120MHz at 2450 MHz. But the subharmonic of 1.2Ghz and others are not filtered although a CW of 1.2 GHz from the same hackrf get filtered. So i am asking if this is particular to SAW filter ? Thanks for yours responses !