John:
Thanks for your support. I am a true believer in the KISS principle. I have spent my professional engineering career putting out "fires" with simple elegant solutions and designing new products. Now in my "retirement" years (actually I still work part time, teaching) I have time to get back to a hobby I started in junior  high school that launched my career in medical electronics. It has been a lot of fun working on the uBitx, and it has exposed me to many engineering issues that I didn't face in the medical area. My plan from the beginning is to use it as a learning experience to launch my next project which will be a SDR transceiver. These harmonics and spur issues have been a distraction but also a great learning experience. It is great to see so many of us working on solutions.

Howard