Specifying bandwidth for fft_sink

Hi,

Is there an easy way to set the bandwidth for the fft_sink display?

I’ve filtered the original signal to the frequencies of interest but in
an
FFT sink the X axis is over 2MHz wide with my signals clustered into the
centre. I’d like the X axis range to reflect the range of frequencies
present in my input signal (a few tens of KHz) rather than leaving most
of
the display blank and clustering all the buckets I care about into the
central 10% of the panel width.

Thanks.

Steve

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