The quickest, dirtiest scanner imaginable to spit out frequencies on which signal peaks are detected for RTL-SDR radios. It is probably not very efficient, but it does work. For my hardware. Good luck.
peakfinder.py 88.0 110.0 (in megahertz)
The values in the script were empirically determined and you should feel free to adjust them. Reported frequencies may lean slightly right of the signal's center.
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