As a DTV tech I just installed my first RBLNB + HR54 + 4k Client today. RB wont be used for another few months. Also was told to not use RBLNBs until later this month but well I'm of the believe that if your getting a 4k client may as well go all the way. Ch 104 looks great. Looks like just random programs on it right now. 105 and 106 didn't have any programming while doing the install.