Have dozens of MX-900 setup with DTV. Never saw this problem. First guess is that there is a neighbor with a URC remote with their basestation set at the same channel. Change the channel to one of the letter ones, as most installers don't go that high and use more common ones like 1, 2, 3.
CEDIA University Designer CAT Team Member CEDIA University Instructor CEDIA Registered Outreach Instructor
