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Al's picture

Hi Kevin,

Thanks for the complement, it's turned into far more than the simple script I made to teach myself Python! It's also far more popular than I ever though it would be.

Unfortunately with direct sampling you only get the in-phase or quadrature signal, the software relies on both I & Q signals to perform a complex Fast Fourier Transform. With one signal only a real FFT can be performed which is symmetric about the tuned frequency an can't be used to create the swept spectrum.

To get the HF bands you'll need to use an up-converter, there a couple of reviews here and here.  I'd recommend a low pass filter on the input to stop the dongle input getting overloaded with higher frequency signals.