Topband: Tuned cw speaker

[Ron Spencer via Topband <topband@contesting.com>]

I think Dave and Adrian's conclusion is correct. My take: for a SDR, if no 
signal was converted during the A to D stage, there will be no signal to "dig 
out" during the D to A stage. No amount of signal processing or noise reduction 
will help since there is nothing there. Nothing is buried in the noise floor.



Ron  N4XD


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