Hello all, After some time and some twists and turns in life, I've found time to work with my GPSDO's again. I've added two Z3815A's to my collection, after wanting to do so for a number of years. After reading through the listserv's historical posts to re-acquaint myself with the units (and the hobby in general), I've found references to an unofficial documentation CD, from Kit S. I've tried emailing Kit, but have received bounces. Was wondering if anyone knows of a new email address. Seems like bytecan may have had some issues and is no longer providing services. Just trying to track down whatever information I can on the Z3815A's, above and beyond the basic connections (which I found by sorting through a half dozen other posts on the list; thank goodness for the archives). I understand that the command set is very similar to the SCPI command set used with the Z3801A's. Just more curious about what other information is out there on these. Thanks!