Alberto Hello, I am thinking about how SDR seems to work from a non software programmers perspective. Which means in laymans terms. And I could have the wrong idea here but my experience with the softwares so far leads me to believe that the software is a kind of DSP ware that acts like a i.f. mixer by injecting a beat frequency into the base band signal in the sound card. This then means that in my view here that the software is acting as a BFO and a detector? And the BFO is thus variable to allow for selection of a desired signal. I do not know in reality if this is the idea behind the workings or not? Anyways, if this is perhaps a sort of explaination in laymans terms that can be used to visualize how this works in reduced down concepts, let us know sometime. I do know that software can act as a signal generator since there are a few signal as well as sweep generator softwares around the net. And this then leads me to wonder if not that there is a signal generator runing in the SDR software in the background? Dan
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