Hi Fernando! The more one looks into transponder circuits, the more complex it gets=2E I suspect you can get something up and running at some level (I can't), but in the real world everyone uses AMB timing systems=2E That is F1, Cart, MotoGP, karting and even R/C racing=2E I have some interest in this, but have never seen another make of system=2E http://www=2Eamb-it=2Ecom/ /Hugo >>-----Original Message----- >>From: cityelectronica@SAPO=2EPT [mailto:cityelectronica@SAPO=2EPT] >>Sent: Monday, May 24, 2004 10:50 AM >>To: PICLIST@MITVMA=2EMIT=2EEDU >>Subject: [PIC]:Transponder >> >>Hello >> >>Where can I find a transponder receiver circuit that can detect a >>transponder >>in a distance up to 1m >> >>Thanks in advance >> >>Fernando >> >> >>-- >>http://www=2Epiclist=2Ecom#nomail Going offline? Don't AutoReply us! >>email listserv@mitvma=2Emit=2Eedu with SET PICList DIGEST in the body >> >> -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body