Click on link below to download: https://www.astronomy.me.uk/wp-content/uploads/2026/07/Chett-Mitchell-GNU-Radio-Layout-handout-BAA-GNU-Radio-meeting-130726.pdf Post navigation Spectrum Lab software DL4YHF the software saves regular copies of top plot on main window but not plot on plot window. Why could that be? Airspy mini are there limited FFT bin options as GNU Radio rejecting some I put in? So far, 256 and 512 works, but not 1024 nor 4096.