A couple of months back I was geting the 771A Error (problem communication with the dish) on one of my HR21-100's. Though a reboot would get everything back working, I finally got fed up and swapped the patch cable from the wall to the reciever and redid the connections for that reciever in the attic. All has been well since that time. (BTW, no other receivers were having that problem) Now, I am getting 771A errors almost every day on an HR20-100. A reboot does not fix the issue. At the same time, I get the error, other STB's intermittently have the same issue (not all at the same time). To get everything back working, I power cycle the PI and it's all good. Since we are having a small heat wave (over 100*° F the last 15 days and no rain), could this affect the performance of the SWM16? It is located in the attic and it's quite toasty up there.