For three weeks, we've had random drops in connectivity - ranging from all good to NO connectivity. Most common state code is 12.1.9, but also have received 12.7.2 or 21.2.1 or 12.2.2. At one time saw a diagnostic code of a bunch of zeroes followed by 49. Sometimes restarting the modem helps, but not always, and only for a short time, even in perfect weather. Our dish is mounted on our roof. We had a big snowfall just before this happened, and at first I thought that snow sliding off the roof may have bumped the dish enough to have it off-target. But not sure considering the above diagnostics?
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