The R390 disk is where a lot of information about the R390 family of receivers is stored, such as the Y2K tech manual, the Pearls, and much more. You can access it this way: http://www.r-390a.net/ Regards, Larry On Fri, Jun 28, 2019 at 10:00 AM Raymond Cote <bluegrassdakine at hotmail.com> wrote: What R390 disk? > >