Re: [CQ-Contest] What my ears can not hear does not matter

["Marijan Miletic, S56A" <s56a@bit.si>]

I wonder if Charly, HS0ZCW ever tried PSK on HF?  These are often inaudible
signals barely visible on waterfall with perfect error-free print!  WSJT EME
is even better case.  Beware of human limitations.  Pilots are trained to
fly by instruments!
 
Absolute limitations on SDR is ADC overflow level which is around 1 mW.
Your contest kW kill them unless good frontend bandpass filters are used.
Fortunately lot of signals are amplitude modulated.

 

LP MMM S56A

 

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