Understanding SDR receivers is not that hard. Let’s apply what we have learned to four popular radios and their HF performance.  Read more

So, how do you get over 110 dB dynamic range from your software receiver when the ADC only has 77 dB SNR? Simple. Create virtual bits with SDR receiver processing gain.  Read more

Your SDR receiver RF Front End may not require as much filtering as legacy receivers, as long as it’s using direct sampling.  Read more

Your SDR receiver ADC performance depends on number of bits and a good understanding of signals versus noise.  Read more

SDR receiver performance depends on the architecture selected and the ability of the analog-to-digital converter to handle a wide range of genuine and spurious signals.  Read more

Architecture means “the complex or carefully designed structure of something”. Let’s look at how SDR receiver architecture has evolved over time.  Read more

SDR receiver quadrature signals seem mysterious. But it’s really just about moving information over radio waves.  Read more

In an SDR receiver complex numbers let us use algebra to solve differential equations representing signals. This stuff is imaginative magic.  Read more