I'm trying to do this experiment.. http://tronixstuff.wordpress.com/2010/06/26/getting-started-with-arduino-%E2%80%93-chapter-eleven/
I'm using http://tronixstuff.files.wordpress.com/2010/06/315-mhz-modules.pdf and http://www.securio.net/modules/shop/clients/256/files/EB-FRX01-FSK.pdf
but it doesn't transmit any data... please help.. =(