I used to be a high school intern there... so I have a few insights.... No idea why they went over to Ch 3, but it does happen on occasion - probably tinkering with stuff. I do know that they have heard a department down in Tennessee (unknown which one exactly) when the weather is just right on Ch 1. Could be what Rich was talking about I guess?
Let me know if ya'll want any other information in general about Tricom??