Eric: My sense is that most main-line distros will support Asterisk and app_rpt. With the caveat that distro selection is also a somewhat personal choice: I have compiled Asterisk and the app_rpt, usbradio suite of programs successfully on Debian (Etch). I have found little value in an X windowing system with these programs, although I recognize that many GUI add-ons exist for Asterisk. It's just that they don't seem relevant in the context of radio linking. The nice things about Debian are: the apt package manager and the guarantee that security bug fixes will the only changes to the stable distribution. My experience with apt has been much more satisfying than with rpm/yum. Another advantage is that Debian adheres to the Linux File System (LFS) layout whereas Red Hat derivatives have some peculiarities. If you are dedicating a PC to Asterisk and radio linking, it seems like unnecessary overhead to use distros such as Ubuntu/Kubuntu/SuSe which primarily target the desktop user. Finally, and I don't want to raise any hackles here, the RH derivatives have had a rather chequered support history over the past few years. RH has gone primarily into the commercial market, Fedora has come and mostly gone, leaving CentOS as the best RH derivative choice presently. HTH & 73, Dave VE7MQ.