thanks all you guys. I definitely going to make the changes here suggested. And also i already figure out what is the problem. Result that RH_ASK library uses pin 10, 11 and 12 for tx and rx also fora other function, so this pins are the same used by the SD module ans his SPI interface. Sure i could change the pin for ASK but somehow still not work so i gonna use another approach, maybe using virtualwire. i will keep you posted. for now thank you all very much, i appreciate your suggestions