Hi Folks, If you are interested in doing simple DSP with the PIC 18Cxxx series you might like to have a look at my Web page at..... http://members.optushome.com.au/gzimmer/default.html (look under PSK31 Audio RX ) any feed-back would be appreciated. regards ........... Zim ........... VK3GJZ -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics