G8JCFSDR is an SDR which uses RF to down-convert RF frequencies
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Peter Carnegie (ex G8JCF)

The G8JCFSDR is an SDR which uses RF front-end hardware to down-convert RF frequencies into the 0~24KHz range accepted by most PC soundcards. The PC reads in the soundcard signal and carries out all of the filtering, demodulation, AGC, and notch filtering in software rather than hardware as would be the case in a traditional receiver. Because the receiver is all software, there are things you can do which would be almost impossible in h/w, how about -100 dB filters for a start !

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