One purpose of the uBITX and BITX40 is to provide a working SSB transceiver at a reasonable price that gives a lot of opportunity to experiment with modifications and computer programming. ?I think it does that. If you are looking for something which is
a competent CW rig as delivered, this isn't it. Maybe someone who is interested will make a full featured CW module to go along with both of these radio But, if you want to use one of them configured for CW the equal or better than something already out there,
this isn't your radio. ?Some more appropriate choices in CW kits have been mentioned and one of them might meet your needs.