*********** REPLY SEPARATOR *********** >Does anyone know where can I find the circuits for transmitter and >receiver. ************************************************* You can get Lynx IC that will do alot of the work for you. You can start here to see all kinds of options. http://www.rfdigital.com/ -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu