>For now I discarded Cypress Wireless USB because of the right power >consumption and I am seriously considering Chipcon/TI CC2500 because >it works with no inductors ! You can just attach a folded dipole >directly to the part pins... You may also like to look at the Analog Devices ADF7021 chip. It is designed to work in all the short range unlicensed bands of Europe, USA, Japan and China. I have no experience with it, but am intrigued enough to be thinking of getting some samples for a possible project. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist