I think the most important here is the PCB layout. Would you mind to share with us? Friendly Regards Octavio Nogueira =================================================== nogueira@propic2.com ICQ# 19841898 ProPic tools - low cost PIC programmer and emulator http://www.propic2.com =================================================== -----Mensagem Original----- De: David Huisman Para: PICLIST@MITVMA.MIT.EDU Enviada em: segunda-feira, abril 03, 2000 01:36 Assunto: Re: RF transmitter You determine the frequency by the resonator used. The loop dimensions given are for 303.8 Mhz Regards David Huisman