SDRplay Community Forum

It looks like the IQ mixers are not analog multipliers like in old Motorola MC1496 circuit but instead IQ mixers are working in switched mode. So the LO is like a square wave. The spectrum of that includes odd harmonics and the only way to get rid of spurious conversion products is to filter input s...

This is incredible poor result. I heard stations that for sure are not on 1.8 or 3.5MHz band. This did not depend on signal levels and therefore is not an overloading or nonlinearity issue. So I did search frequencies that produre spurious responses. I used a professional HP signal generator and fou...