Yeah, more information on _why_ one would want to use this chip ... how is it driven, that sort of thing. Can it drive a telephone line or a modem without having to dial-up to establish a PPP connection? My mountain weather station needs a telemetry link down to me, 15km away. Still haven't found anything practical and cheap. There's a lot of fence wire around though, which could be a good start. -- James Cameron mailto:quozl@us.netrek.org http://quozl.netrek.org/ -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.