BTW Robert, if you want to drag just one side of the IF passband, hold CTL and drag the required side. It’s in the manual under ‘Asymmetrical passband’ somewhere.
That noise my be coming from local VDSL cables, I get it here. Mine’s easy to spot, as there is a sudden ‘shelf’ of noise (rising about 10dB) at 8.5 MHz, which is where one of the VDSL bands begins.
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