Hi All, The rtl-sdr dongle has only 8 bit resolution. It is essential to run it at a sampling speed providing Nyquist frequency well above the -3dB point of the tuner filter.
Simple theory is not applicable however. It seems that RTL2832 does not sample at 300 kHz when one asks that rate from the dongle. It seems to sample faster and to add a digital anti-alias filter. Not a good filter however as you can see in this video: https://www.youtube.com/watch?v=bVrZ8r7q7cs The video is intended to give an idea about how to try different processing parameters to optimise performance of a RTL-SDR dongle in Linrad on a slow computer. 73 Leif / SM5BSZ
