Hi again, I am needing help. I have posted a set of pictures (Scope captures) at www.janso.com.ar/1.htm. I need to simulate a RFID device in order to transmit some information (for config purposes) to a own reader. Both the reader and the rfid deviced are "home built" meaning that both arent buyed or manufacturer by any commercial manufacturer. I mentioned that to make clear that I'm not looking to crack or anything like that an entrance or security system, I just want to change some operating parameters on my PIC using the same RFID medium... That is way I need ideas on how to generate those signals shown in the mentioned pictures, a more detailed explanation is at the top of the page too... Thanks for any help, regards Mauricio Jancic Janso Desarrollos Microchip Consultant Program Member (54) 11-4542-3519 info@janso.com.ar www.janso.com.ar -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist