Has anyone noticed that the keyer program pitch changes pitch between messages. It sounds like 50 cycle buzz from the normal pictch set in the original set up of the keyer. I have to click the stop symbol and then restart the keyer again for the tone to go back to normal.
I don't know if this applies to the problem that you have, but I was having trouble with the sound of the keyer tone. I had to turn the amplitude way down to about 5. The audio was just too high and was overdriving the CQ100. I found that I had to turn down the amplitude while watching the "S-Meter". The best adjustment for my situation was so the meter read