Yes, this is extremely confusing. The transmit frequency is offset by the amount of the sidetone setting. The software gives you no indication of this offset. ?The simplest solution would be for the display to change to the transmit frequency when CW is key down, and the "CW" mode is displayed. At least you would know what is happening.?
In the CEC firmware, using the manager program, you can check the "Enable Adjust CW Frequency" checkbox and the transmit frequency will be displayed instead of the receive frequency.
Here is a similar thread:?
/g/BITX20/message/50224Tom, wb6b