It's been a while so I'm going to close this thread, but if you have anything new to bring up, please don't hesitate to start another thread.
So it does appear that my problem was fixed by the tech that came out in January! I've been back at the property now that spring is here and after spending several weekends up there with absolutely no problems, I feel confident it is fixed. Apparently the lose connection outside between the cable that runs to the dish and the cable that runs inside to the modem was the problem all along! I haven't had a single instance since then where the modem "locks up" and all the lights on the front go off. Thanks!!
Wooo! That's great news, Kent. Glad that the tech was able to resolve your concerns. I appreciate your patience and cooperation throughout the process, please don't hesitate to drop by the community again if you need anything else, we're here to help.