I kind of figured that was the case. I guess I'll need to leave the HR10-250 and the 921 in 480i mode before I leave town on my trips. Unless, I can figure out a way to switch the modes by the sling remote. The 921 may have that HD/SD button on the remote but I haven't looked at it yet.
Not sure if you tried the EVDO mode yet but it doesn't handle it well on continuous. I see the bit monitor at the bottom of the right corner registering fine at 356+ but then it will dip to 116 for a second when the picture hesitates and the sound drops. Then it will burst to ~500 and it picks up and does fine. In effect, the EVDO (laptop card) is not good for sustained connection of streaming video at these rates. There may be some settings that allow you to adjust for this by a larger buffer and restricted screen demand. Smart TV does it this way and can actually work fine at GPRS data rates. Later today, I'll dig into it further.
I see they haver a new beta software for download on their website. I tried to get it right away but they wouldn't allow that as a first install.
I found a way around this output mode switch from the sling software on the Hr10-250 From the live tv mode, once connected you can pre configure your uparrow to toggle between the selected video modes. I selected two, 720P and 480i and now if I bring up that DVR, and I hear audio but black picture, uparrow and the picture comes on!
