Hope someone can help with this issue. For the past couple of days at around 2:00 pm until 3:00 pm I lose satellite signal. It's sporadic within this time frame. I have an HR24-100, an H20-100, and a D12 Standard receiver. All three of them go blank with the 771 error. When I check the signal strength during the outages, I get all zeros on everything. Any advice as to what to do? Anybody's help will be greatly appreciated. During normal activity, I have signal strengths ranging on all satellites between 92 and 100. Thanks.