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Old 1st Aug 2021, 7:45 pm   #45
Join Date: Nov 2018
Location: London SW16, UK.
Posts: 379
Default Re: DIY FM tuner with 6CW4 nuvistor and ECC85

This explains quite well the concepts of I and Q, Nyquist Theorem, DDC, DUC, decimation and interpretation in SDR:

It is an old video but I find easy to understand.
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