[mikewarot]

I never tested it, I was just happy to get it working.

If I were to do it over, I'd likely want to optimize things quite a bit to get the sensitivity up.

The amazing thing is, though the RTL-SDR dongles are only 8 bit devices, when you're down-sampling 2Mhz of them to audio frequencies, you gain quite a few bits of resolution. I routinely pick up signals below the quantization threshold.

I wonder what the lower bandwidth limit truly is, assuming a stable reference clock.