I Have this setup SDR(fc) -> 'Frequency Xlating FIR Filter' (Low pass, Center Freq: 100k) -> Resampler( 5M/100k) -> 'QT GUI Frequency Sink' (Center: fc+100k, Bw 100k) And parallel with QT GUI FSink, -> 'Log Power FFT' -> Python (Peak detektor)
My problem I have is the read out from 'Log Power FFT' starts at 'fc+100k'. I would like it to start 'fc+50k'. Can I use 'Frequency Xlating FIR Filter' again and lower my frequency starting point? Like this parallel with QT GUI FSink, -> 'Frequency Xlating FIR Filter' (????) -> 'Log Power FFT' -> Python (Peak detektor) What kind on taps do I need if this is possible? /Phil