[hpsdr] Sampling

[FRANCIS CARCIA]

I run 75 KHz sampling on my PDM rig so the integrating filter set at 8 KHz gives me about 70 dB of attenuation of the sample frequency. I follow the filter thing because I would have a large filter if my sample was 24 KHz.
  It is the gear head in me to always wonder the limits of a new idea like this cool stuff.
  I still feel the best system will have the bandwidth limited at the input but feel free to prove me wrong. frank
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