For those of you who have purchased a DSPx to learn about DSP coding, Chapters 10 and 11 of "Experimental Methods in RF Design" are a wonderful introduction to the use of DSP in conjunction with Amateur radio. I have reworked several of the example programs, and will work on more of them. The updated files are on my website (www.kk7p.com). Enjoy! Lyle, KK7P