Hello, I had this great (well I think it is :) idea to make a sort of peer-to-peer cell phone system. Basicly, it would be a TCP/IP data system. The phones would try to route data through each other until they get to some sort of internet gateway. The phone could have a rs232 interface for PDAs and such. I want to make this as cheaply as possible. I was thinking of using an FSK system on 2.4 GHz yielding a few channels of 64 Kbps each however I have no idea as to how to implement it. So, please can you guys give me one or two pointers on how do do this? Thanks, Timothy -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads