To adjust the level of sidetone, in CW mode / Xmt enabled push the TX Menu knob and the ssidetone soft control is there.
The effect is most pronounced if you select a high pitch, such as 1500Hz. Interestingly the lower tone changes in frequency as the sidetone pitch is varied, which makes me think that it is indeed a subharmonic.
The lower frequency tone is several dB down but is certainly enough to make the sidetone about T6, which is a tad disappointing for us CW aficionados.
If there is a way to do an audio frequency sweep test that will help verify, There may be a particular frequency that is more noticeable. Also try to see if varying the tone’s volume level has an effect on the distortion.
Just taking a guess?
Gerald - K5SDR, Official Rep
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Lew, I just spoke with the engineers this afternoon and they have already fixed the CW sidetone issue. It will be alpha test by the weekend and will be in the next release. We are planning shorter release cycles to get public updates out more quickly.
The workaround for now is to just plug the key into the 6000 directly since in my shack the 6000 and Maestro sit on the same desk 99% of the time.
Is there any progress on fixing this? It seems the priority should go up with the release of V2 as there will be no workaround for the remote WAN case.