544Re: decoding BC station with SDR - changing the LO or filter
- Feb 2, 2012Hans,Certain kinds of FFT (& Hardware) can output a -ve & +veFrequency spectrum, with Zero at the centre.If downmixed, this translates as LO frequency +/- Separated.Upper and Lower Sidebands, with Image Rejection.As a new user, I haven't yet discovered if SL can do this,or how to configure it for this. However this ought to yieldreception through "Zero Frequency", with DC coupled ADC's....Or a 40Hz central notch, with 20Hz HPF Audio Soundcards?. Gra.
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