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

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