On 2/16/2021 5:56 AM, Black Michael via wsjt-devel wrote:
You're wrong -- it's being transmitted too. I send that example a while ago.
That doesn't mean it's necessarily coming from the code -- the distortion could be generated anywhere in the analog chain, from the analog side of the D/A of the computer, through the rig's audio stages, the transmitter's RF stages, a power amp if there is one, the receiver's RF chain and audio stages, to the audio side of the computer's A/D.
The audio side of computers are notoriously lousy. Years ago, I measured distortion on the output of a "good" computer sound card as -30 dB just below clip, and -40 dB at 6 dB below clip.
73, Jim K9YC _______________________________________________ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel
