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Al's picture

Hi Gisle, I'll have to admit I have no idea why you got that error but I'll try and track it down.

The scan will be slow, on older machines this isn't helped by the amount of number crunching that is required.

The overall speed is limited by the bandwidth of the dongle, the program effectively samples a 500kHz wide block for the dwell time before moving to the block.  Although it's possible to sample a 2.8MHz bandwidth the frequency response of the dongle tuners does limit this in practice (especially if they have a large DC offset).