Hello all Thank PICLIST message posted a few weeks ago (I don't remember who post the message) I found MXCOM modems really very useful to design PIC applications over radio. In their site (www.mxcom.com) they are a lot of interesting IC's to develop such applications. MXCOM guys are very kind, answer my questions so quickly and sent me samples too fast ( faster than to buy products in my own country). They speak Spanish very well and Mr. Juan Alvarado (jalvarado@mxcom.com) is a very gently person to answer questions from Spanish people. Really PICLIST was very useful for me because here, in Argentina, I wasn't be able to obtain IC modems (excepto older TCM 3105). Thanks to all Miguel Argentina