Thanks to all for the suggestions of alternatives. I would welcome more suggestions to research. I’m also curious about the ultrarendu.
I appreciate the thoughts from those of you who suggest or imply that finding other solutions to preventing the drop offs by continued troubleshooting may work. I wish this was so as I used both Zen Streams in different locations with no problems for months and was thrilled with the quality, especially when adding a network switch and fiber optic cable. It is certainly possible that I missed something. However, after weeks of annoyance and attempts to fix the problem, I am ready to throw in the towel and just buy something that I have more confidence in.